Tirzepatide tracker: see where your dose sits on day 2 and day 6
You take tirzepatide once a week, but the week is not one flat thing. Day 2 and day 6 can feel like two different bodies, and most trackers only record the date you injected. A tracker earns its place when it shows you where you are between shots.
Setva is on its way to the App Store. The curve calculator on this site is free today.
A tirzepatide tracker logs your weekly injection, the site you used and how you felt, then plots the estimated level of the drug in your body between shots. Tirzepatide has a published half-life of about 5 days, so a weekly dose does not sit flat: it climbs after the shot, peaks, and falls off before the next one is due.
Draw the Tirzepatide curve for free, right in your browser, no signup.
What tirzepatide is and how it is dosed
Tirzepatide is a dual GIP and GLP-1 receptor agonist: it acts on two receptors where semaglutide acts on one. It is injected once a week, on the same day each week, and the published elimination half-life is about 5 days.
It is sold as Mounjaro for type 2 diabetes and as Zepbound for weight management and obstructive sleep apnea. Same molecule, same dose ladder, different labels.
- Class: dual GIP and GLP-1 receptor agonist
- Route: injection, once a week
- Approved doses: 2.5, 5, 7.5, 10, 12.5 and 15 mg
- Published half-life: about 5 days
- FDA approved since May 2022
What a tirzepatide tracker actually needs to do
Recording the date is the easy part. What changes your week is knowing where you are on the curve when you wake up.
With a half-life of about 5 days and a shot every 7, the estimated level never drops to zero between doses. It builds over the first weeks on a dose, then settles into a repeating rise and fall. Absorption is in the model too, so the estimated peak lands two to three days after the shot.
Semaglutide runs at about 7 days. Tirzepatide clears faster on the same weekly schedule, so a tirzepatide week has more slope. Day 2 sits near the top of that week and day 6 well down the slope.
- Log the shot in two taps, from phone, lock screen or wrist
- Rotate sites on a body map, so you never guess which side
- Show the estimated level today, not just the last dose date
- Keep a history you can scroll, with no streak to break
Side effects and the day they tend to land on
Nausea, fatigue, constipation, reflux, headache. Most people on tirzepatide can name theirs. What they cannot name is the pattern.
Logging a symptom should cost one tap and an intensity. After a few weeks, a real question becomes answerable: does your nausea land on day 2 every time, or was last week just a bad week?
That is a reading of your own record, not a prediction. If a side effect is severe, new or does not settle, call your prescriber.
The shot you forgot, and the reminder that fixes it
Forgetting is rarely about motivation. It is Thursday, you are busy, you decide to do it after dinner, and then it is Friday and you are not sure.
A reminder on the day of your dose, one that can break through focus mode, covers the first case. One follow up a few hours later, if you still have not logged it, covers the second. No streaks, no guilt, no third alarm.
Your tirzepatide data stays on your iPhone
What you inject and how you felt afterwards is health data. It should not sit in somebody's database because you wanted a reminder.
Setva has no accounts and no login, because there is no server of ours to log into. Your records live on your iPhone and in your own private iCloud, which is how they follow you to a new phone. Weight syncs with Apple Health only if you turn that on.
How Setva tracks tirzepatide
Setva is an iPhone app built around exactly that week. You log the shot in two taps, pick the site on a body map, and the home screen shows today's estimated level with the phase named plainly.
The curve is an educational estimate based on published half-life data, not a measurement of your blood. Setva never tells you to change a dose.
The app is not on the App Store yet. Leave your email and you will be first to know when it launches. It is 79.99 USD a year or 12.99 USD a week, with no trial.
The free curve calculator at https://setva.app/glp-1-calculator needs no email, runs in your browser and keeps what you type on the page.
- Dose log with site rotation and full history
- Estimated tirzepatide curve, with a readable disclaimer
- One tap side effect chips, plus patterns by day of the cycle
- Weight with a 7 day moving average, plus Apple Health
- Widgets, a Live Activity on dose day, and an Apple Watch app
Setva is coming to the App Store. Join the waitlist and you will hear from us once, the day it goes live.
Questions people ask
What is the half-life of tirzepatide?
About 5 days. The Mounjaro label prints that figure and the overdosage section of the Zepbound label repeats it, while the Zepbound pharmacokinetics section gives a range of about 5 to 6 days measured in a different population. It is one molecule, so Setva uses 5 days for the molecule and for both brands, and the curve is best read as a band of roughly that width.
How long does tirzepatide stay in your system?
About 5 days after a shot, roughly half of that dose is estimated to remain. With a shot every 7 days the level never reaches zero, which is why a steady dose settles into a repeating pattern.
Can a tracker tell me my actual tirzepatide level?
No. It models what published pharmacokinetics predict for an average adult on your dose and schedule. Real levels vary between people, so read the curve as the shape of your week.
Is a Mounjaro tracker the same as a tirzepatide tracker?
In practice, yes. Mounjaro and Zepbound are both tirzepatide on the same dose ladder, and Setva draws all three with the same 5 day half-life this page uses, so the curves match. The Zepbound pharmacokinetics section words it as about 5 to 6 days because it was measured in adults with overweight or obesity.
What if I take my shot a day late?
Log the day you actually took it and let the curve reflect the real timing. Questions about a late or missed dose belong to your prescriber.
Does Setva count calories or track food?
No. No calorie counter, no food database, no meal photos. Setva covers doses, the curve, side effects and weight.
How much does Setva cost?
The calculator on this site is free and needs no account. The app is 79.99 USD a year or 12.99 USD a week, no trial, and it is not on the App Store yet.
This is an educational estimate based on published half-life data, not a measurement of your blood. Never change your dose without your prescriber.