Today, and what's due
The day's doses in one list, logged with a slide, and the week behind you — taken, missed and skipped.
Estimated levels, modelled
What's left from your last shot?
Choose semaglutide or tirzepatide, enter your dose and frequency, and see the shape of the week — how a weekly injection rises, holds and falls before the next one.
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- Semaglutide
- Tirzepatide
- Weekly
- Every 3.5 days
- Titration step
iPhone & Android · Apple Health & Health Connect
The model
Draw the week.
Pick your compound, enter your dose and how often you take it. The curve is the shape a schedule makes — it rises after a dose, falls before the next, and stops climbing once the amount you take balances the amount you clear.
Your schedule
Labels only. The amount scales the curve; it does not change its shape, which is why the axis is a percentage.
These are shapes to draw, not schedules to adopt. Your provider sets your plan.
35 days to settle
| Dose | Day | Just after | Before the next |
|---|---|---|---|
| 1 | 0 | 50% | 26% |
| 2 | 7 | 75% | 38% |
| 3 | 14 | 88% | 45% |
| 4 | 21 | 94% | 48% |
| 5 | 28 | 97% | 50% |
| 6 | 35 | 98% | 50% |
| 7 | 42 | 99% | 51% |
| 8 | 49 | 100% | 51% |
Semaglutide
35 days
until your dose once a week stops climbing — about five half-lives
Half-life
7 days
Left when the next is due
50%
Settled peak
2.0×
A simplified single-compartment model. Real absorption, distribution and individual variation differ, and a late or missed dose changes the shape entirely.
Estimated levels
A curve, not a verdict.
The chart shows relative concentration over time: it rises after a dose, falls between doses, and settles into a repeating pattern once you have been on the same step for a few weeks. It carries no clinical units and no in-range band, because neither would mean anything without a blood draw.
- A curve built from the doses you actually logged
- See at a glance whether you're mid-week steady or nearing your next shot
- Titration steps show up as visible changes in the curve
Track this automatically in the app. Track this automatically in the app. 
Track this automatically in the app.
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Proof, not vibes
Then stop typing it in.
A calculator models a schedule you describe. The app charts the doses you actually took — including the one you were two days late for, which is usually the interesting one. Same model, fed by your real history instead of an assumption.
- Weight and waist trend beside your dose history
- Side-effect check-ins (1–5) that sit on the same timeline as each shot
- Plain-language Insights: what changed, never what to take
Everything in the app
One app for the whole
of what you take.
The reminding, the logging, the remembering and the paperwork — in one place, on iPhone and Android.
Reminders that fire on time
A nudge at the time you set for every dose, plus refill, expiry and lab reminders. Scheduled on the phone, so they arrive with no signal.
A daily check-in in seconds
Rate energy, mood, sleep and side effects on a 1–5 scale and tag any symptoms. Ten seconds a day is what makes a trend.
Weight and symptoms, on a schedule
Log a weigh-in and how you have been feeling, with a daily or weekly reminder to do it. Both land on the same timeline as your doses.
Progress, not just a streak
Every dose taken and missed, day by day and medicine by medicine, with your weight and check-in trends over the same weeks.
Apple Health and Health Connect
Connect once and Lumara reads what your phone, watch or scale already writes. Read-only, on iPhone and Android — nothing is written back.
Sleep, HRV and your vitals
HRV, resting heart rate, sleep, steps and weight, charted alongside your dose history over the same weeks.
Estimated levels between doses
A modelled curve of how much is likely still in you between doses, drawn from the schedule you logged. On the paid plans.
Lab results you can keep
Enter a marker, its value and the draw date, and Lumara charts it against the reference range. Set your own reminder for the next one.
A model, not a measurement. This is an approximation from your own dose history — it is not a blood test, carries no clinical units, and is never a recommendation. Only your provider can interpret your actual levels.
Refills before you run out
Refill dates with a reminder while there is still time to reorder, and a vial vault holding days of supply and expiry dates.
Reminders that travel with you
Add a trip with its destination and dates and your daily reminders follow local time there. Weekly injectables keep their home interval.
Connected to your clinic
If your clinic uses Lumara, enter their join code and the protocol they prescribe arrives in your app. You start the connection and you can end it.
A summary for your next appointment
Lumara writes up the month — what you are on, how much of it you took, your weight and your worst symptoms — to take in with you.
Send your progress to your prescriber
Turn what you have logged into a factual PDF and share it in a tap. Messages and protocol updates from your clinic arrive in the same app, to read.
Private by default
Stored on your device, with encrypted backup only if you turn it on. Face ID or a passcode locks it, there are no ads, we never sell your data, and you can export or delete it whenever.
Vial tracking, circulating-level charts and the provider report are on the paid plans.
Half-life, accumulation, and why the first month feels different
Two numbers from the FDA labels shape every curve on this page. Semaglutide has a half-life of about one week, which is why it is dosed weekly and why it takes roughly four to five weeks on a given dose before the peaks and troughs stop climbing. Tirzepatide's is about five days, so it settles a little sooner. That settling is called steady state, and it is the reason the third week on a new step often feels different from the first.
What the curve cannot tell you
- It is not a blood level and carries no clinical units.
- It cannot account for how your body absorbs, distributes or clears the compound.
- It says nothing about whether a dose is right, safe or working for you.
- It is not a reason to change anything about your protocol.
A model, not a measurement. This is an approximation from your own dose history — it is not a blood test, carries no clinical units, and is never a recommendation. Only your provider can interpret your actual levels.
Sources
- Semaglutide — current FDA prescribing information — DailyMed, U.S. National Library of Medicine. Retrieved 5 September 2026.
- Tirzepatide — current FDA prescribing information — DailyMed, U.S. National Library of Medicine. Retrieved 5 September 2026.
- Drugs@FDA: FDA-Approved Drugs — U.S. Food & Drug Administration. Retrieved 5 September 2026.
Product information as of 5 September 2026.
Questions
Good to know.
Semaglutide's published half-life is about one week, and the FDA label notes it takes roughly five weeks after a final dose for it to clear. That is also why a change in dose takes about a month to fully settle.
About five days, per the FDA label — shorter than semaglutide, which is why its curve dips a little more between weekly doses and reaches a steady pattern slightly sooner.
Roughly four to five weeks on the same dose for semaglutide and around four for tirzepatide. Every dose step restarts that clock, which is why the labels space the steps about four weeks apart.
No, and no app can. This is a model built from a published half-life and the schedule you type in. It carries no clinical units and is never a recommendation. Only a blood test ordered and read by your provider measures anything.
The shape is set by the half-life and how often you dose — that is what the chart shows. The amount scales it. The curve is relative on purpose: an absolute number would imply a precision this model does not have.
Your data is encrypted on your device, backups are encrypted, and we never sell data or show ads. Export or delete everything from inside the app.
No. Lumara is a tracking and education tool. It doesn't prescribe, diagnose, or replace your provider's guidance.
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Track this automatically in the app. Track this automatically in the app.
Track this automatically in the app.
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Lumara is a tracking and education tool. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always follow your provider's instructions.