# Doz > Doz is a medication and pill reminder app for iPhone (iOS 17 or later) that organises medicines by the prescription they came from, times doses to meals, and needs no account. It is a free download on the App Store; Doz Pro is an optional upgrade, billed monthly, yearly or as a one-time lifetime purchase. This site (getdoz.app) has the app's own pages, free medication calculators, guides, and feature-by-feature comparisons with other reminder apps. Every page also exists in German, Spanish, Japanese, Korean, Portuguese, Russian and Vietnamese under /de/, /es/, /ja/, /ko/, /pt/, /ru/ and /vi/. App Store: https://apps.apple.com/us/app/doz-medication-reminder/id6760699565 ## Facts - Prescriptions, not a flat list: each prescription is one card holding every medication on it, with the prescriber and how long the course runs. - Free version: up to 4 medicines and 1 prescription, with standard reminder notifications that follow the iPhone's Silent and Focus settings. - Doz Pro adds Critical Alerts (reminders that sound through Silent and Focus), a follow-up nudge 5 to 60 minutes after an unlogged dose, Take and Skip buttons on the reminder notification, logging doses by Siri or Shortcuts, importing medications from Apple Health (iOS 26 or later), and mealtime changes that move the doses tied to them. - Reminders are fixed daily clock times. An "every N hours" schedule becomes fixed times of day; Doz does not follow a schedule that drifts from one day to the next. Cycles such as 21 days on, 7 days off are supported, and doses shift with you across time zones. - Stock is counted down as doses are logged. Low stock is a warning inside the app, not a push notification. - Siri: asking what to take today, what is running low, adherence, or when a medication was last taken is free; logging, skipping, refilling or archiving by voice is Doz Pro. Phrases must include "in Doz". - Apple Watch: Doz has no Watch app. Its reminders are iPhone notifications, so Apple forwards them to a paired Apple Watch whenever the iPhone is locked and the watch is on the wrist and unlocked. With Doz Pro the reminder carries Take and Skip buttons. - NFC: Doz does not read NFC tags itself. An iPhone Shortcuts automation with an NFC trigger can run Doz's "Take Dose" action (Doz Pro) or "Check Last Dose Taken" (free). - Privacy: no account and no sign-up. Data stays on the device, and optional iCloud sync uses the user's own private CloudKit database; the developer cannot see it. Works fully offline. Medication names can be hidden from notifications. - Not available: Android, a caregiver or family view, remote monitoring, sharing a schedule with another person, or medical advice. Doz reminds and records; it does not tell anyone what to take. ## About Doz - [Doz: Pill & Medication Reminder for iPhone, Even on Silent](https://getdoz.app/): Doz organizes your medication by prescription, the way doctors prescribe, not as a flat list of pills. Doses tied to meals, and with Doz Pro, reminders that break through Silent mode. - [FAQ](https://getdoz.app/faq): Answers to common questions about Doz, the iPhone medication reminder: Critical Alerts that break through Silent mode, doses tied to meals, iCloud sync, offline use, and pricing. - [Pill Reminder App for iPhone That Works on Silent](https://getdoz.app/pill-reminder-app-iphone): Most pill reminder apps for iPhone are alarms with a pill icon. Doz uses Critical Alerts to break through Silent mode, ties doses to meals, and groups pills by prescription. - [Medication Reminder for Elderly Parents on iPhone](https://getdoz.app/medication-reminder-for-elderly): Setting up medication reminders for an ageing parent: no account to remember, one card per prescription, alerts that sound on a silenced iPhone, and refill warnings before the bottle runs out. - [Support](https://getdoz.app/support): Doz support: get started, fix reminders that aren't arriving, turn on Critical Alerts, troubleshoot iCloud sync and missing data, or contact the developer directly. ## Comparisons - [Medication Reminder Apps Compared: Doz vs Medisafe, MyTherapy & More](https://getdoz.app/compare): Doz compared with Medisafe, MyTherapy, Apple Health and other medication reminder apps: price, privacy, silent-mode alerts, caregiver sharing and more, in one table. - [Doz vs Medisafe: Price, Privacy and Features Compared (2026)](https://getdoz.app/compare/doz-vs-medisafe): Doz vs Medisafe compared: price, Medfriend caregiver alerts, Apple Watch, Critical Alerts, refills, interactions, privacy and accounts, with sources for every Medisafe fact. - [Doz vs MyTherapy: Pill Reminder Apps Compared (2026)](https://getdoz.app/compare/doz-vs-mytherapy): Doz vs MyTherapy compared: ads and price, accounts, where your data goes, refills, family profiles, health reports and trackers, with sources for every MyTherapy fact. - [Doz vs Apple Health Medications: Which iPhone Pill Reminder?](https://getdoz.app/compare/doz-vs-apple-health): Doz vs the Medications feature in Apple Health: price, Apple Watch, Critical Alerts, refills, schedules, time zones and privacy, compared feature by feature. - [Doz vs CareClinic: Pill Reminder or All-in-One Health Tracker?](https://getdoz.app/compare/doz-vs-careclinic): Doz vs CareClinic compared: price, account and data storage, reminders, refills, caregiver care teams, interactions and reports, with sources for every CareClinic fact. - [Doz vs EveryDose: Medication Reminder Apps Compared](https://getdoz.app/compare/doz-vs-everydose): Doz vs EveryDose compared: price, refill reminders, interaction alerts, family profiles, schedules, time zones and privacy, with sources for every EveryDose fact. - [Doz vs Drugs.com Medication Guide: Reminder App or Drug Reference?](https://getdoz.app/compare/doz-vs-drugs-com): Doz vs the Drugs.com Medication Guide app: interaction checker, med lists, reminders, ads and privacy, price and platforms, with sources for every Drugs.com fact. - [Doz vs Pill Reminder - All in One: Which Pill Reminder App?](https://getdoz.app/compare/doz-vs-pill-reminder-all-in-one): Doz vs Pill Reminder - All in One compared: one-time price, Critical Alerts, every-X-hours schedules, refills, privacy, syncing and time zones, with sources for every fact. - [Doz vs Max Pill Reminder: Medication Apps Compared](https://getdoz.app/compare/doz-vs-max-pill-reminder): Doz vs Max - Pill reminder compared: ads and price, follow-up calls, family sharing, privacy, schedules and time zones, with sources for every Max fact. - [Doz vs Pill Buddy: Cute Med Reminder or Prescription Organiser?](https://getdoz.app/compare/doz-vs-pill-buddy): Doz vs Pill Buddy compared: escalating reminders and phone calls, ads and price, privacy, widgets, refills and schedules, with sources for every Pill Buddy fact. - [Doz vs Hero Pill Dispenser: App or Smart Dispenser?](https://getdoz.app/compare/doz-vs-hero): Doz vs Hero compared: a free iPhone reminder against a smart pill dispenser membership. Price, caregiver alerts, refills, Wi-Fi and privacy, with sources for every Hero fact. ## Free tools - [Medication Tools and Calculators](https://getdoz.app/tools): Free calculators for medication schedules: refill dates, days supply, dose intervals, half-life, cycles, adherence and cost. No sign-up, nothing leaves your browser. - [Free Refill Calculator: When to Refill a 28, 30 or 90-Day Rx](https://getdoz.app/tools/refill-date-calculator): Enter pills left and doses per day to see the date you run out and the day to order your refill. Free, no sign-up, for 28, 30 or 90-day supplies. - [Every 6, 8 or 12 Hours Medication Times Calculator](https://getdoz.app/tools/dose-interval-calculator): Turn “every 6, 8 or 12 hours” into real clock times. Enter your first dose, the interval and the course length to get the day's schedule, the total number of doses, and a warning when a dose lands overnight. - [Time Zone Medication Schedule Planner](https://getdoz.app/tools/time-zone-dose-planner): See what your dose times become after you fly. Enter your home and destination UTC offsets to compare keeping local time against keeping your body's schedule. - [Weekly Pill Organizer Planner (Printable)](https://getdoz.app/tools/pill-organizer-planner): Build a printable 7-day pill organizer chart. List your medications and which slots they belong in, then print the grid and fill the box against it. - [Free Printable Medication List & Chart Template](https://getdoz.app/tools/printable-medication-list): Make a free printable medication list, a daily medication chart with a 7-day log, or a blank template to fill in by hand. CSV export. Nothing is sent anywhere. - [Drug Half-Life Calculator: What's Left in Your System](https://getdoz.app/tools/half-life-calculator): Work out how much of a dose is left after a given time from its half-life, when it is effectively cleared, and how much accumulates if you dose repeatedly. - [Days Supply Calculator: Free Day Supply Tool for Prescriptions](https://getdoz.app/tools/days-supply-calculator): Turn a prescription quantity into days of supply, or a number of days into the quantity to ask for. Handles part tablets, several doses a day and pack sizes. - [Medication Adherence Rate Calculator](https://getdoz.app/tools/adherence-rate-calculator): Work out your medication adherence percentage from doses taken and missed, see it against the 80% threshold used in research, and how many doses you can still miss this period. - [Medication Cost Per Dose and Per Year Calculator](https://getdoz.app/tools/medication-cost-calculator): Turn a pack price into cost per dose, per day, per month and per year, and compare two pack sizes on cost per dose rather than sticker price. - [Medication Cycle Calculator: On-Off and Every N Weeks](https://getdoz.app/tools/medication-cycle-calculator): Turn a cycled medication schedule into dates: days on, days off, or a dose every N days or weeks. Shows each upcoming window and the next date to act on. - [Refill Too Soon Calculator for Regular and Controlled Rx](https://getdoz.app/tools/refill-too-soon-calculator): The earliest date a refill should go through, from the last fill, the days supply and your plan's threshold. Covers controlled medications such as Adderall too. - [How Many Pills Should I Have Left? Free Pill Count Calculator](https://getdoz.app/tools/pill-count-checker): Enter your start date, how many you got and your dose to see how many pills should be left today, then compare it with what is actually in the bottle. - [Printable Dosing Calendar and Medication Schedule](https://getdoz.app/tools/dosing-calendar): Generate a printable dosing calendar from a start date and a schedule: every day dated, a tick box per dose, and the finish date marked. Works for a course or a month. - [3 Times a Day Medication Schedule: How Many Hours Apart?](https://getdoz.app/tools/times-a-day-schedule): Up 7am to 11pm? 3 times a day is every 8 hours: 7am, 3pm, 11pm. Up 8am to 10pm, it is every 7 hours. Enter your wake and bed time for exact dose times. - [When Can I Take My Next Dose? Next Dose Calculator](https://getdoz.app/tools/next-dose-time-calculator): Enter the minimum gap and the 24-hour limit from your label plus the times of your recent doses, and get the earliest time the next dose is allowed. - [Prescription Refills Calculator: When Do My Refills Run Out?](https://getdoz.app/tools/prescription-refills-calculator): From your last fill date, days' supply and refills remaining, work out the last day your prescription covers and when to ask your prescriber for a renewal. - [How Many Pills to Pack for a Trip · Travel Medication Calculator](https://getdoz.app/tools/travel-medication-calculator): Enter your travel dates, your dose and a few spare days, and get exactly how many pills to pack — plus whether what you have at home covers it. - [How Long Will My Inhaler Last? Inhaler Days Calculator](https://getdoz.app/tools/inhaler-days-calculator): Enter the puffs left on your inhaler's counter and how many you use a day, and get the date it runs out and the date to reorder by. - [Taper Schedule Calculator: Dates for Each Step](https://getdoz.app/tools/taper-schedule-calculator): Enter the taper steps your prescriber gave you and how long each lasts. Get the dates every step starts and ends, the final day, and the total tablets needed. - [How Long Will a Bottle of Liquid Medicine Last?](https://getdoz.app/tools/liquid-medicine-days-calculator): Enter the bottle size in ml, the ml per dose from your label and how many doses a day, and get the number of full doses, the days it lasts and the run-out date. - [When Does My Course End? Course End Date Calculator](https://getdoz.app/tools/course-end-date-calculator): Enter when you took the first dose, how often you take it, and the course length or number of doses, and get the date and day number of the last dose. - [Every N Hours Is How Many Times a Day? Calculator](https://getdoz.app/tools/hours-to-times-a-day-calculator): Turn “every 6 hours” into doses a day, or “5 times a day” into hours apart. Shows doses per day and per week, and how far the clock times drift when the gap does not divide 24. - [How Many Months Do My Tablets Last? Tablets to Months](https://getdoz.app/tools/tablets-to-months-calculator): 180 tablets twice a day is how many months? Enter a tablet count and how many a day, or the months you need, and get days, weeks, 30-day months, 28-day fills and calendar months. - [When Does Birth Control Start Working? Calculator](https://getdoz.app/tools/birth-control-start-calculator): Enter your method and the first day of your last period, and this tells you whether it protects you straight away or on a later date, following NHS guidance. - [Depo Shot Calculator — Next Injection Due Date | Doz](https://getdoz.app/tools/depo-shot-calculator): Enter the date of your last Depo-Provera or Noristerat injection and this works out when the next one is due, how long you have before you need extra contraception, and the next few due dates. - [NuvaRing Schedule Calculator: Remove and New-Ring Dates](https://getdoz.app/tools/nuvaring-schedule-calculator): Enter the day a vaginal contraceptive ring (such as NuvaRing or EluRyng) went in. See when to take it out, when the 7-day ring-free week ends, and the date of each new ring for the next six cycles. - [Tirzepatide (Mounjaro, Zepbound) Dosage Chart & Calculator](https://getdoz.app/tools/glp1-dose-schedule-calculator): Tirzepatide dosage chart: 2.5 mg weekly, up 2.5 mg after at least 4 weeks, to 15 mg. Zepbound and Mounjaro steps by date, plus Wegovy, per the FDA labels. - [Prescription Abbreviation Translator (BID, TID, QID)](https://getdoz.app/tools/prescription-abbreviation-translator): Type a prescription as written, like 1 tab PO TID or 2 gtt OU QID, and read it in plain English with a clock time for each dose. Flags error-prone abbreviations. - [Missed Birth Control Pill? What to Do, by Hours Late](https://getdoz.app/tools/missed-birth-control-pill-calculator): Missed a pill? Enter your pill type and when it was due to get the CDC steps: what to take now, whether you need condoms, and when to skip the placebo week. ## Guides - [Blog](https://getdoz.app/blog): Guides on medication reminders, prescriptions and refills on iPhone, from the team behind Doz. - [Medication Reminders on Apple Watch and NFC Tags: What Works](https://getdoz.app/blog/apple-watch-nfc-medication-reminder): How iPhone medication reminders reach your Apple Watch, when they stay on the phone, and how to log a dose by tapping an NFC sticker on the bottle with Shortcuts. - [Adderall Shortage: Refill Rules for Schedule II Stimulants](https://getdoz.app/blog/adderall-shortage-schedule-ii-refills): Generic Adderall IR is still on the FDA shortage list. Federal rules for your next fill, partial fills and transfers, and what to do if your pharmacy is out. - [How to Take the Wegovy Pill or Foundayo: Doses and Missed Doses](https://getdoz.app/blog/how-to-take-wegovy-pill): Take the Wegovy pill each morning on an empty stomach with up to 4 oz of water, then wait 30 minutes. Dose steps, missed doses and how Foundayo differs. - [Prednisone Taper Schedule: How to Read and Follow Yours](https://getdoz.app/blog/prednisone-taper-schedule): How to read the prednisone taper your prescriber wrote, what Medrol and prednisone dose packs show day by day, and why not to stop suddenly. - [Daylight Saving Time and Your Medication Schedule](https://getdoz.app/blog/daylight-saving-time-medication): When the clocks change, keep taking doses at the same clock times. What that does to the gap overnight, how every-8-hours schedules cope, and the 2026-27 dates. - [Medication Adherence App: What Actually Keeps You on Schedule](https://getdoz.app/blog/medication-adherence-app): What a medication adherence app needs to help you take the right dose at the right time, every day: the features that matter, how to measure your own rate, and the limits. - [Birth Control Reminder App: Set an Alarm You Won't Snooze](https://getdoz.app/blog/birth-control-reminder-app): What a birth control reminder app needs: an alarm that sounds on Silent, discreet birth control alarm names, and a setup that survives weekends and travel. - [Every 5 Hours Is How Many Times a Day? (And 7, 9, 10 Hours)](https://getdoz.app/blog/every-5-7-10-hours-dose-schedule): Every 5 hours is 4.8 times a day on average, and your dose times drift an hour later each day. How intervals that do not divide 24 behave, with full clock tables. - [Every Other Day Medication: How to Keep Track Without Mistakes](https://getdoz.app/blog/every-other-day-medication-schedule): Taking medication every other day sounds simple until the month ends. Why odd and even dates fail, why Mon-Wed-Fri is not the same, and a method that never slips. - [How Many Months Is 180 Tablets? Tables for Every Bottle Size](https://getdoz.app/blog/how-many-months-is-180-tablets): 180 tablets twice a day is 90 days, or 3 months. Tables for 28 to 360 tablets at one to four a day, in days and months, and why your month may be 28 or 30 days. - [How to Calculate Days Supply: Tablets, Inhalers, Drops, Insulin](https://getdoz.app/blog/how-to-calculate-days-supply): Days supply is quantity divided by daily use, but inhalers, eye drops, insulin pens, liquids and creams each hide a catch. Worked examples for every form. - [QID, BID, TID, q6h Meaning: Prescription Abbreviations](https://getdoz.app/blog/prescription-label-abbreviations): QID means four times a day, BID twice, TID three times and q6h every 6 hours. A quick chart of prescription abbreviations, with example clock times for each. - [Antibiotics vs Antivirals: What Each One Treats and Why It Matters](https://getdoz.app/blog/antibiotics-vs-antivirals): Antibiotics treat bacterial infections and antivirals treat specific viruses. Why antibiotics don't help colds or flu, what antivirals can do, and why you take a course as prescribed. - [Controller vs Reliever Inhaler: What Each One Does and Why It Matters](https://getdoz.app/blog/asthma-controller-vs-reliever-inhaler): The difference between an asthma controller (preventer) inhaler and a reliever, why the controller is used every day even when you feel well, and how to keep track of puffs and refills. - [Blood Pressure Numbers Explained: What the Top and Bottom Numbers Mean](https://getdoz.app/blog/blood-pressure-numbers-explained): What systolic and diastolic mean, the American Heart Association's blood pressure categories, when a reading needs urgent help, and why daily medication matters when you feel fine. - [Can Siri Remind You to Take Medication? Reminders, Alarms, and Where They Fall Short](https://getdoz.app/blog/can-siri-remind-you-to-take-medication): "Hey Siri, remind me to take my medication" works today, no app required. What it actually does, where a plain Siri reminder falls short for daily medications, and what closes the gap. - [Common Over-the-Counter Medication Mistakes, and How to Avoid Them](https://getdoz.app/blog/common-otc-medication-mistakes): The most common over-the-counter medication mistakes are quiet ones: the same active ingredient in two products, doses past the label maximum, and months of use nobody reviewed. - [What Does Non-Drowsy Mean? (And Why You Might Still Feel Sleepy)](https://getdoz.app/blog/drowsy-vs-non-drowsy-antihistamines): Non-drowsy means less likely to make you sleepy than older antihistamines, not that it never will. Which types are which, and the driving and alcohol advice. - [Helping an Aging Parent Manage Their Medications Without Taking Over](https://getdoz.app/blog/helping-aging-parent-manage-medications): A practical way to help an aging parent manage medications: one accurate list, a weekly routine, reminders they can hear, and refills that never run out on a Sunday. - [How Long Does It Take for Medication to Work? Why Some Take Weeks](https://getdoz.app/blog/how-long-does-it-take-for-medication-to-work): Why a painkiller works quickly but an antidepressant can take weeks, what steady state means, and how to stay on schedule while you wait. - [How to Measure Blood Pressure at Home and Get Readings You Can Trust](https://getdoz.app/blog/how-to-measure-blood-pressure-at-home): How to measure blood pressure at home: choosing a cuff that fits, sitting the right way, when to measure, how many readings to take, and how to keep a log your doctor can use. - [How to Save Money on Prescriptions Without Cutting Corners](https://getdoz.app/blog/how-to-save-money-on-prescriptions): Practical ways to lower what you pay for prescriptions: generics, 90-day supplies, comparing pharmacies, manufacturer and assistance programs, and the one saving you should never make. - [How to Set Up Automatic Prescription Refills, and When Not To](https://getdoz.app/blog/how-to-set-up-automatic-refills): Automatic refills stop you running out, but they can also fill a dose you no longer take. How auto-refill works, how it differs from a refill reminder, and the pitfalls to check first. - [How to Transfer a Prescription to Another Pharmacy](https://getdoz.app/blog/how-to-transfer-a-prescription): Moving a prescription to a new pharmacy in the US is usually one phone call. The steps, what to have ready, what slows it down, and why controlled substances follow tighter rules. - [How to Use Siri and Shortcuts in Doz: A Step-by-Step Guide](https://getdoz.app/blog/how-to-use-siri-in-doz): Where to find every Siri phrase Doz understands, how to talk to it without saying anything wrong, and how to turn a phrase into a Home Screen or Spotlight shortcut in under a minute. - [Liquid vs Tablet Medication: Which Form, and How to Take Each Safely](https://getdoz.app/blog/liquid-vs-tablet-medication): Why a medicine comes as a liquid, tablet or capsule, how to measure liquids accurately with the device supplied, and why crushing or splitting tablets is a question for the pharmacist. - [Magnesium Types Explained: Glycinate, Citrate, Oxide and What the Label Means](https://getdoz.app/blog/magnesium-types-explained): A plain-English guide to the common forms of magnesium supplement, what the evidence says about absorption, the official upper limit, and why your pharmacist should know you take it. - [Medication Myths: Six Common Beliefs, and What the Evidence Says](https://getdoz.app/blog/medication-myths): Stopping antibiotics when you feel better, doubling a missed dose, generics being weaker, natural meaning safe: common medication myths, corrected with sources. - [Medication Reminders for Someone With Memory Problems](https://getdoz.app/blog/medication-reminders-for-memory-problems): How to help someone with mild memory problems or early dementia take their medications: simpler routines, visible records, reminders that repeat, and when to get more help. - [Polypharmacy: How to Manage Many Medications Safely](https://getdoz.app/blog/polypharmacy-managing-many-medications): What polypharmacy means, why taking many medicines raises the risk of side effects and interactions, and how to ask for a medication review. - [Seasonal Allergy Medication Timing: When to Start, Daily vs As-Needed, and Keeping It Up](https://getdoz.app/blog/seasonal-allergy-medication-timing): Why hay fever treatment often works better started before pollen season, the difference between daily and as-needed allergy medicines, and how to keep a routine going for months. - [Siri Not Responding to Your Medication Shortcut? Here's Why](https://getdoz.app/blog/siri-shortcut-not-working-medication-app): Siri shortcuts for medication apps fail for a handful of specific, fixable reasons: the app name, the exact phrase, a medication Siri hasn't learned yet. What's actually going on, and how to fix each one. - [Ask Siri About Your Medications: What Actually Works on iPhone](https://getdoz.app/blog/siri-shortcuts-medication-reminder): Siri can now read your medication schedule and log doses out loud, if the app supports it. What you can ask, why every phrase has to name the app, and how it works in Doz. - [How to Sleep Better Without Sleeping Pills: Habits, CBT-I and Where Melatonin Fits](https://getdoz.app/blog/sleep-better-without-sleeping-pills): Practical sleep habits, what cognitive behavioural therapy for insomnia involves, what the evidence says about melatonin, and when poor sleep needs a doctor. - [Treating a Sore Throat Without Antibiotics, and When to Get Help](https://getdoz.app/blog/sore-throat-without-antibiotics): Most sore throats are caused by viruses and get better on their own. What helps at home, how strep throat differs, and the red-flag symptoms that mean you should get seen. - [Statins and Cholesterol: Why People Stop, and What to Do Instead](https://getdoz.app/blog/statins-and-cholesterol-adherence): What statins do in general terms, the common reasons people stop taking them, and why side effects and doubts are worth raising with your prescriber rather than quietly stopping. - [Supplements and Prescription Medicines: Why Your Pharmacist Needs to Know](https://getdoz.app/blog/supplements-and-prescription-medicines): Supplements can change how prescription medicines work. Why to tell your pharmacist about every vitamin and herbal product, the well-documented examples, and how to keep a list. - [How Long After Levothyroxine Can You Eat or Drink Coffee?](https://getdoz.app/blog/taking-thyroid-medication-consistently): Take levothyroxine 30 to 60 minutes before breakfast or coffee (NHS), and keep calcium and iron at least 4 hours away (MedlinePlus). A routine that holds up. - [A Type 2 Diabetes Daily Routine: Medications, Meals and Monitoring](https://getdoz.app/blog/type-2-diabetes-daily-routine): How to build a type 2 diabetes daily routine that holds up: anchoring medications to meals, planning food simply, checking blood sugar as advised, and keeping supplies from running out. - [Vitamin D Deficiency Basics: Who Is at Risk, How It's Tested, and Who Decides the Dose](https://getdoz.app/blog/vitamin-d-deficiency-basics): Who is most likely to run low on vitamin D, what the blood test actually measures, the official reference intakes, and why the amount you supplement should come from a clinician. - [What Is Medication Synchronization? One Pickup Date for Every Refill](https://getdoz.app/blog/what-is-medication-synchronization): Medication synchronization lines up your regular prescriptions so they are ready on the same day each month. How it works, who it suits, how to ask for it, and what to track yourself. - [Why People Miss Medication Doses, and the Fixes That Actually Work](https://getdoz.app/blog/why-people-miss-medication-doses): The real reasons medication doses get missed, from forgetting and busy mornings to side effects and cost, and practical fixes for each one. - [28-Day vs 30-Day Prescriptions: Why Your Refill Date Keeps Moving](https://getdoz.app/blog/28-day-vs-30-day-prescription): A 28-day supply drifts two to three days earlier every calendar month, and a 30-day one drifts too. Dated refill tables for a year, and 84-day vs 90-day fills. - [Every 4 Hours Is How Many Times a Day? Six (and the As-Needed Cap)](https://getdoz.app/blog/every-4-hours-as-needed-max-doses): Every 4 hours is six times a day at most. As-needed labels often add a lower cap, such as 4 doses in 24 hours. How the two limits interact, and why the 24 hours are rolling. - [Every 6 Hours Is How Many Times a Day? Four (With Clock Times)](https://getdoz.app/blog/every-6-hours-how-many-times-a-day): Every 6 hours is four times a day, and one dose always lands at night. Clock-time tables for common start times, and how it differs from four times a day. - [How Long Does an Inhaler Last? Puffs, Counters and Empty Dates](https://getdoz.app/blog/how-long-does-an-inhaler-last): How long an inhaler lasts is puffs left divided by puffs per day. How to read the counter, allow for priming, estimate a reliever, and know when to reorder. - [How Many Pills to Pack for a Trip (and the Day Everyone Forgets)](https://getdoz.app/blog/how-many-pills-to-pack-for-a-trip): How much medication to pack for a trip: count the days properly, add spare days for delays, handle half tablets and two medicines, and check your supply. - [How Many Refills Left? Prescription Refills and Expiry Dates](https://getdoz.app/blog/how-many-refills-left-prescription-expiration): What "refills remaining" on a label means, how many days a prescription really covers, why refills expire unused, and when to ask your prescriber for a renewal. - [How Many Tablets for 30 Days? 3 a Day Is 90, 4 a Day Is 120](https://getdoz.app/blog/how-many-tablets-for-30-days): 2 tablets twice a day for 30 days is 120. Tables for 1 to 4 tablets a day over 28, 30 and 90 days, half tablets, pack sizes, and why a month is not always 30. - [What Time Is Three Times a Day? Schedules Around Your Day](https://getdoz.app/blog/three-times-a-day-schedule-waking-hours): Real clock times for medication taken two, three or four times a day, for early risers, late sleepers and night shifts, and how to do the sum yourself. - [Every 12 Hours Is How Many Times a Day? Twice](https://getdoz.app/blog/twice-a-day-vs-every-12-hours): Every 12 hours is twice a day, such as 8am and 8pm. Clock times for common start times, and why twice a day does not always mean 12 hours apart. - [How Soon Can You Refill a 90-Day Prescription? Usually 68 to 77 Days](https://getdoz.app/blog/when-can-you-refill-a-90-day-prescription): Usually 68 to 77 days after the fill date, once a plan's 75 to 85% rule is met. The dates worked out, why mail order changes the timing, and why 90 days is not just three 30s. - [Can You Import Your Medications From Apple Health Into Another App?](https://getdoz.app/blog/import-medications-from-apple-health): You already typed every medication into Apple Health once. Four questions to ask any reminder app that claims it can bring them across, and the one mistake that destroys your dose log. - [Switching Medication Apps Without Losing Your Dose History](https://getdoz.app/blog/switching-medication-apps-without-losing-history): The reason people stay on a medication app they dislike is the log, not the app. What your dose history is actually good for, and the order of operations that keeps it. - [Every 8 Hours vs Three Times a Day: Not the Same Schedule](https://getdoz.app/blog/every-8-hours-vs-three-times-a-day): Three times a day is not always every 8 hours. One is a fixed round-the-clock gap, the other fits your waking hours. How to tell which you were given, and what to do about the 2am dose. - [How Long Will My Pills Last? Count From What Is Left Today](https://getdoz.app/blog/how-long-will-my-pills-last): Work out how long an open bottle will last and the day it runs out, including doses that change through the week, two strengths and as-needed pills. - ["Refill Too Soon": What It Means and When You Can Actually Refill](https://getdoz.app/blog/refill-too-soon-what-it-means): Why the pharmacy rejects a refill that feels overdue, how the 75–85% rule works, why controlled substances are different, and the overrides worth asking for. - [The Problem With 7-Day Pill Organizers, and the 5-Second Fix](https://getdoz.app/blog/7-day-pill-organizer-problems): A weekly pill organizer answers the wrong question. Four fixes for the 'did I already take it?' problem, including the upside-down bottle trick. - [Four Ways to Know You're Running Low Before You Actually Run Out](https://getdoz.app/blog/medication-refill-reminder-running-low): Running out of medication is not a memory problem. Four refill systems that work on paper, plus the one step most people forget: checking whether you can actually get a refill. - [Travelling With Medication: The Bits That Trip People Up](https://getdoz.app/blog/travelling-with-medication-checklist): A short checklist for taking medication abroad — splitting your supply, photographing the label, refilling before you go, and deciding what your dose times mean once you land. - [Choosing a Medication Reminder App Without an Account](https://getdoz.app/blog/medication-reminder-app-without-account): A medication reminder app without an account keeps your prescription list off someone else's server. The five questions to ask, and what private has to mean. - [Medication Reminder Time Zone Changes: What Actually Breaks](https://getdoz.app/blog/medication-reminder-time-zones): A medication reminder time zone problem is not really about alarms. What shifts, what must not, and how to set up a schedule that survives the flight home. - [Choosing an Antibiotic Reminder App for a Short, Strict Course](https://getdoz.app/blog/antibiotic-reminder-app): An antibiotic reminder app has a different job from a daily pill reminder: fixed intervals, a real end date, and doses you cannot quietly shift by two hours. - [A Medication Reminder for Multiple Medications That Actually Holds Up](https://getdoz.app/blog/medication-reminder-for-multiple-medications): A medication reminder for multiple medications fails in predictable ways. How to group doses by prescription, survive Silent mode, and catch refills early. - [What a Prescription Tracker App Should Actually Track](https://getdoz.app/blog/prescription-tracker-app): A prescription tracker app that only logs pills loses the useful part. What to record instead, and why supply, prescriber and refills matter as much as doses. ## Optional - [What's New](https://getdoz.app/whats-new): Release notes for Doz, the iPhone medication reminder. See every new feature, improvement, and fix, version by version. - [Privacy Policy](https://getdoz.app/privacy): How Doz handles your medication data: stored on your device, synced only through your own iCloud, never sold or shared. Read the full privacy policy. - [Terms of Service](https://getdoz.app/terms): Terms of service for Doz, the iPhone medication reminder. Covers subscriptions, billing, data availability, and why Doz is not a substitute for medical advice.