A medication schedule keeps producing small sums: how many days are left in the bottle, what “every eight hours” means in real times, what the pack actually costs per day. These 27 do that arithmetic.
Medication tools
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Supply and cost
How much you have, how long it lasts, what it costs.
Pills left → order-by date
Refill date
Pills left, doses per day, and a buffer in — a run-out date and an order-by date out.
Quantity ↔ days of supplyDays supply
Converts a quantity into days, or a number of days into the quantity to ask for — including part-packs.
Pack price → cost per dayCost per dose
Breaks a pack price down to the dose, the day and the year, and compares two pack sizes properly.
Fill date → earliest refillEarliest refill
Works out the first day a refill is likely to go through, and how many days early is too early.
Start date → pills left todayPill count check
How many should be left by now, and what a count that does not match is telling you.
Refills left → last day coveredRefills remaining
How far the refills on your prescription actually get you, and when to ask for a new one before they run out.
Trip dates → pills to packTravel supply
How many to pack for a trip, counting both travel days and a few spare in case you are delayed.
Puffs left → empty dateInhaler days left
Turns the number on the dose counter into the day the inhaler runs out, and the day to reorder by.
Bottle ml → doses and run-out dateLiquid medicine days
How many full doses are in a bottle of liquid medicine, how many days that lasts, and what is left over.
Tablets ↔ monthsTablets to months
How many months 180 tablets last at twice a day, or how many tablets three months needs. 30-day, 28-day and calendar months.
Timing and doses
When each dose lands, and what is still in you when it does.
Every N hours → clock times
Dose interval
Turns “every 8 hours” into real clock times, and flags the doses that land overnight.
Home time → local timeTime zone shift
Compares keeping local time against keeping your body's schedule after a flight.
Half-life → what is left nowHalf-life decay
How much of a dose remains after N hours, when it is effectively cleared, and how much builds up on a repeating schedule.
Days on and off → real datesCycle dates
Lays out a 21-on-7-off or every-N-weeks schedule as real dates, so the next start is not mental arithmetic.
Times a day → clock timesTimes a day
Turns “three times a day” into real times that fit between when you wake up and when you go to bed.
Last doses → next allowed timeNext dose time
For “every 4 hours, no more than 4 in 24 hours” labels: the earliest the next dose is allowed, and which limit decides it.
Your steps → dated taperTaper schedule dates
Puts calendar dates on the taper steps your prescriber gave you: when each step starts, when it ends, and the final day.
A course → date of the last doseCourse end date
When a 10-day course or a box of 21 tablets actually finishes: the day and time of the last dose, counted from the first.
Every N hours ↔ times a dayHours to times a day
“Every 6 hours is how many times a day?” Both directions, and what happens when the gap does not divide into 24.
Method & cycle day → protected fromBirth control start
When a new combined pill, progestogen-only pill, ring or injection starts protecting against pregnancy, based on NHS guidance.
Last injection → next shot dueDepo shot
Date of your next contraceptive injection and the late-but-still-covered window, following CDC and NHS guidance.
Insert date → remove and new-ring datesNuvaRing schedule
Enter the day you put the ring in. See when to take it out, when the ring-free week ends, and the date of the next ring.
First injection → weekly dose stepsMounjaro dose schedule
Weekly dose steps for Mounjaro, Zepbound and Wegovy from your first injection date, plus what the label says about a missed dose.
Records and routine
What to load into the box, and what to tell the doctor.
Meds and slots → printable week
Organizer planner
Builds a printable 7-day grid to fill your weekly organizer against.
Your meds → printable list & CSVPrintable medication list
Enter your medicines and when you take them, then print a list, a daily schedule chart with a 7-day log, or a blank template.
Doses taken → adherence %Adherence rate
Turns doses taken and missed into the percentage a doctor or insurer would use, and how many you can still miss.
A course → printable calendarDosing calendar
Lays a course out across dated weeks with a box per dose, sized to print and stick on the fridge.
What these are not
None of these tools give medical advice, and none of them will compute a dose for you. They do arithmetic on numbers you type in. Anything about which medication to take, whether a dose can move, how to taper, or what to do about a missed dose belongs with your doctor or pharmacist — and a pharmacist will usually answer it in under a minute on the phone.
If you would rather have the scheduling handled for you, Doz is a free iPhone app that keeps prescriptions, doses and stock counts in one place. There is also a blog covering the habits these tools support.