muster

For whoever does the pharmacy runs

Six prescriptions, six pickup days. Muster makes it one.

Copy the dates off the bottle labels. Muster works out the one-time short fills that put every prescription on the same pickup day, then prints a card to hand your pharmacist.

Try it with an example household Add your own bottles

Runs in your browser. No account. Nothing is sent anywhere.

The Muster planner after pressing Line them up: seven bottles on a 90-day timeline, their dots sitting on three amber pickup lines, and the counter reading 19 trips crossed out, 6 trips.
The real planner, example household. 19 trips → 6 in the next 90 days.

A typical month

A made-up but typical example

Saturday night. Dad says he's on his last metformin. You picked up his lisinopril on Tuesday and his thyroid pills the week before. The tamsulosin is due Monday. Every bottle was filled on a different day, so every bottle runs out on a different day. Next month it happens again.

Running out isn't a memory problem. It's calendar arithmetic.

Reminders tell you when the next bottle runs out. They can't make the bottles run out together. Many pharmacies already can: it's called medication synchronization, one-time short fills that move every prescription onto one day. You just have to ask, and asking is a lot easier with the numbers in hand.

Before and after, same seven bottles

Before: the timeline shows each bottle's pickups scattered across different days, 19 trips in 90 days.
19 trips in the next 90 days, each bottle on its own schedule.
After: the same bottles lined up on shared amber pickup lines, 6 trips in 90 days.
6 trips, including the four to get there. Then one every 30 days.

How it works

  1. 01

    Copy each label

    Name, how many a day, days' supply, fill date. If you count the pills left, Muster uses the count instead. Tick the box for controlled substances.

    The Add a bottle form, filled in for Lisinopril 10 mg: tablet, 1 a day, 30 days' supply, filled October 5.

  2. 02

    Press "Line them up"

    Muster tries every possible pickup day, skips days the pharmacy is closed, and keeps the one with the fewest trips. Short fills due close together share a trip. Anything that shouldn't be split is set aside with the reason.

    The lined-up plan listed trip by trip: short fills with tablet counts, a regular fill one day early, and the repeating pickup day.

  3. 03

    Hand over the card

    One printed page: the pickup day, each short fill in tablets and days, the one sentence to say at the counter, and a note that the pharmacist checks it against their record. Doses never change.

    The printed pharmacist card: One pickup day for Dad, Saturday December 12, with a table of each medication's next pickup and fill.

What it doesn't do

Credits

Built for NextSpark Hacks 2026. Plain HTML, CSS and JavaScript; no frameworks, no trackers. Type: Atkinson Hyperlegible by the Braille Institute and IBM Plex Mono by IBM, both under the SIL Open Font License. Medication-sync background: the American Pharmacists Association's Appointment-Based Model; daily cost-sharing rule: 42 CFR 423.153(b)(4).

AI disclosure: designed and written with Claude Code (Anthropic). The AI wrote most of the code and copy under the entrant's direction; the entrant chose the problem, reviewed the plan logic and is responsible for the result. The planner itself uses no AI: every number is computed in your browser.