Mounjaro tracker: what the week after your shot looks like
You take Mounjaro once a week, and the week is not flat. Day 2 rarely feels like day 6, and that difference is not in your head.
Setva is on its way to the App Store. The curve calculator on this site is free today.
A Mounjaro tracker logs your weekly tirzepatide injection, the site you used and how you felt, then lines those entries up against the estimated level of the drug in your body. Tirzepatide has a published half-life of about 5 days and doses come 7 days apart, so part of one shot is still there when the next one lands. A useful tracker shows that shape.
Draw the Mounjaro curve for free, right in your browser, no signup.
What Mounjaro is and how the week is shaped
Mounjaro is the brand name for tirzepatide, a dual GIP and GLP-1 receptor agonist taken as one injection a week. The FDA approved it in May 2022 for type 2 diabetes in adults, and later for patients aged 10 and older. The maximum is 15 mg a week in adults but 10 mg a week in those under 18, so 12.5 mg and 15 mg are adult doses. The same molecule is sold as Zepbound for weight management.
The half-life is about 5 days, so roughly half of what is in you clears in that time. The next shot lands on day 7, while part of the old dose is still there. That is why the level climbs over the first weeks before settling into a repeating pattern.
What a Mounjaro tracker needs to do
Most medication apps were built for a daily pill. A weekly injection is a different problem.
- Log the shot in two taps, on the day or after the fact.
- Remember the last site used, so rotation is not a memory exercise.
- Hold the mg you were prescribed, and keep the history when it changes.
- Show where you are in the week, not just that the box is ticked.
- Log a side effect in one tap, on a bad afternoon.
Day 2 and day 6 are not the same week
Tirzepatide leaves slowly. The estimated level rises after the shot, holds, then eases toward the end of the week. Whether your appetite follows that shape is personal, but knowing where you are in the week changes how you read the day.
It is the difference between thinking something is wrong with you and knowing it is Tuesday. It also shows which day of the cycle a long dinner falls on.
Setva draws this with a one compartment model and the published half-life. It is an educational estimate, not a measurement of your blood, and never a reason to change what you take.
Side effects, and the day they show up
Nausea, fatigue, constipation, reflux, headache. Alone, each is a bad day. Logged for a few weeks against the day of the cycle, they often turn into a pattern: nausea lands on day 2 and has eased by day 4.
That only works if logging costs nothing, so a side effect in Setva is one tap for the symptom and one for intensity. Trends then show intensity by day of the cycle: a picture of your own record, not a diagnosis.
Some symptoms are not patterns. Severe or lasting abdominal pain, vomiting that will not stop, or anything your prescribing information flags belongs with your prescriber the same day.
The reminder that matters, and the one that does not
The failure mode with a weekly drug is not laziness. Thursday looks like every other Thursday, and 7 days is long enough for the shot to slip your mind.
Setva sends one time sensitive notification on dose day. If a few hours pass with nothing logged, it nudges once more, then stops. No third message, no badge counting misses, no streak to break. A Live Activity holds the lock screen until you log, widgets carry the countdown, and the Watch logs from your wrist.
Miss one and the app records it and moves on. What to do about a missed dose is in your prescribing information and with your prescriber.
Your Mounjaro data does not leave your iPhone
Setva has no accounts and no login, and no server of ours holds your health data. What you log lives on your iPhone and in your own private iCloud, which carries it to your next phone.
A record of a GLP-1 prescription, the doses and the side effects is not something you want in someone else's database. Weight syncs with Apple Health only if you ask.
How Setva tracks Mounjaro
Setva is an iPhone app built for one problem: the week a GLP-1 dose creates and the effects that come with it. Two taps to log a shot, with a body map for site rotation. The curve sits at the top of the home screen, today marked on it.
The app is not on the App Store yet, but it is close. Leave your email and you will hear from us the day it launches, once, at 79.99 USD a year or 12.99 USD a week, with no trial.
Until then the curve calculator at setva.app/glp-1-calculator is free, needs no account and runs in your browser. Pick Mounjaro, enter your dose day, and see the week.
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 Mounjaro?
The Mounjaro label reports about 5 days for tirzepatide. Doses come 7 days apart, so part of each one is still in you when the next lands.
Does a Mounjaro tracker measure the drug in my blood?
No. Setva estimates the level from the dose and date you logged, using a one compartment model and the published half-life. It is an educational estimate, not a lab result.
Can I track Mounjaro and Zepbound in the same app?
Yes. Both are tirzepatide. It is one molecule, so both brands are drawn with the same half-life of about 5 days, and your history stays if the box changes. The Zepbound pharmacokinetics section words it as about 5 to 6 days because it was measured in a different population, which is why the curve is best read as a band.
What happens if I miss my Mounjaro dose?
You can log the shot late, on the day it actually happened, so the curve stays honest. What to do about the missed dose is in your prescribing information and with your prescriber.
Is Mounjaro the same as Ozempic?
No. Mounjaro is tirzepatide, acting on the GIP and GLP-1 receptors. Ozempic is semaglutide, GLP-1 only, with a half-life of about 7 days against about 5, so the curves differ.
Is my Mounjaro data private?
Your logs stay on your iPhone and in your private iCloud. There is no account, no login and no server of ours storing health data.
Can I use Setva today?
Not yet. The app is close to the App Store, and the waitlist is how you hear about launch. The curve calculator here is free right now, no sign up.
This is an educational estimate based on published half-life data, not a measurement of your blood. Never change your dose without your prescriber.