PenWeek is the calm companion for people on GLP-1 medications - one place for your shot, your body, and your week. Understand the rhythm instead of fighting it.
iOS & Android · For tracking and education only - not medical advice.
Weekly GLP-1 medications follow a published activity pattern - an early peak, then a gradual ease before your next dose. PenWeek draws your week from your medication’s published half-life and your own schedule, so a hungrier day reads as expected - not “it stopped working.”
The curve shows the general activity pattern of a medication based on its published half-life. It is an educational estimate, not a measurement of your body. Everyone is different - follow your prescriber.
Tap where you injected on a living body map. PenWeek tracks your rotation and reminds you which sites haven’t been used lately - your memory, not your nurse.
Rapid loss can take muscle with it. PenWeek gives you a personal protein range from published guidance, one-tap logging, and a training streak that keeps you honest.
your protein range · general guidance, not a prescription
Log the shot, the site, even yesterday’s forgotten dose. Skipped one? Log that too - the curve simply reflects reality, without judgement.
Every week: doses on rhythm, weight delta, protein average, side-effect trend - summarized from your own logs.
Dose day, a heads-up before the weekly trough, a gentle “did you log it?”, and a refill reminder from your own supply count.
Log symptoms in seconds and see how they line up with your dose timing - observations about your own data that make prescriber conversations better.
of your nausea logs fell within 2 days of a dose - example insight
One tap builds a tidy PDF or CSV of your doses, weight trend, side effects and habits - for you and your clinician to look at together.
PenWeek is a tracking and education tool. It will never tell you what dose to take - that’s between you and your prescriber.
Every medical fact in the app traces to an FDA label or peer-reviewed pharmacology - with the sources one tap away.
Your health data lives encrypted in the EU (Frankfurt), protected by row-level security. Delete your account and everything goes with it.
The curve is an educational estimate - never a measurement, never a recommendation. Your prescriber leads; PenWeek keeps the notes.
PenWeek is in private beta on iOS, with Android next. Want in early?
Request an inviteNo spam. One email when your invite is ready.