A Mounjaro® tracker app for your weekly dose day, sites and side effects
What the Mounjaro label says
Quoted from the US prescribing information on DailyMed, checked on 11 November 2026. The leaflet in your own pack may word this differently, and that leaflet is the one that applies to you.
- Schedule: "Administer MOUNJARO once weekly, any time of day, with or without meals."
- Where: "Inject MOUNJARO subcutaneously in the abdomen, thigh, or have another person inject MOUNJARO in the back of the upper arm. Rotate injection sites with each dose."
- A missed dose: give it "as soon as possible within 4 days (96 hours) after the missed dose. If more than 4 days have passed, skip the missed dose and administer the next dose on the regularly scheduled day."
- Moving the day: "The day of weekly administration can be changed, if necessary, as long as the time between the two doses is at least 3 days (72 hours)."
Depending on the country, Mounjaro comes as a single-dose pen, a vial or a four-dose KwikPen®. In the European Union it is authorised by the European Medicines Agency, which publishes the EU product information and package leaflet.
What Dozify does for someone on Mounjaro
- Days to the next dose, on the first screen. Open the app and it tells you which day your next injection is and how many days away.
- A reminder on the dose day, at the time you actually inject. "I took it" on the notification logs the dose without opening the app.
- Injection-site rotation. Tap where you injected on the body map (abdomen, thigh or upper arm, left or right). Next time, the area you have used least recently is already selected.
- Weight and side effects next to each dose. Log nausea or constipation with how bad it was, and your weight in a few seconds, on the same timeline as your injections.
- A PDF for your doctor. A summary PDF of what you logged is free twice a month; the fuller doctor-visit report is Premium.
- Doses left in a KwikPen. Add your pen as a KwikPen and each shot you log takes one dose off it, with a warning before you run out. Premium.
- AI meal-photo estimate. Photograph a meal and get a draft of calories and protein per item, to check and correct before saving. The first one is free, then it is Premium.
Dose logging, the dose-day reminder, site rotation and logging your weight and side effects are free, with no time limit. Premium also adds weight trend charts, the side-effect timing view and an estimated tirzepatide level curve drawn from your logged doses.
When a dose is late
The most common Mounjaro question is about a forgotten injection, and the label answers it with a number of days counted from the missed dose. Dozify keeps the date of every injection you log, so instead of counting back from a half-remembered Thursday you can see exactly when the last one was. What to do with that number is in your leaflet; if you are unsure, your pharmacist or prescriber will tell you. The app does not decide it for you. Every GLP-1's window is compared in what each leaflet says about a missed dose.
What Dozify will not do
It does not calculate doses, convert between pens and vials, count pen clicks or suggest when to step up; your dose is your prescriber's decision. It cannot judge an injection site or a symptom: a lump that stays, severe stomach pain or vomiting that will not stop is for a clinician. And it makes no promise about your weight. What it shows is what you logged.
In the United States, tirzepatide prescribed for weight management is sold as Zepbound®, with the same weekly rhythm. There is a separate page for it: Zepbound tracker app.
Questions
Is there a free Mounjaro tracker app?
Dozify is free to download, and logging Mounjaro doses, the dose-day reminder, site rotation, weight and side effects are free with no time limit. Premium is an optional subscription, $6.99 a month or $39.99 a year on the US App Store (prices differ by country), that adds the KwikPen dose count, the doctor-visit report, trend charts, AI meal estimates after the first one and the estimated level curve.
What if I miss my Mounjaro dose?
The US label says to take it as soon as possible within 4 days (96 hours) of the missed dose, and to skip it if more than 4 days have passed, then carry on on your usual day. Check the leaflet in your pack and ask your pharmacist or prescriber if you are unsure. Dozify shows when your last dose was logged; it does not decide for you.
Where do I inject Mounjaro?
The US label names the abdomen and the thigh, and the back of the upper arm when someone else injects, and says to rotate sites with each dose. Dozify's body map remembers where each injection went and points to the area you have used least recently. More on injection sites.
Does Dozify work with the Mounjaro KwikPen?
Yes. Logging each dose is free whatever pen or vial you use. With Premium, add the pen as a KwikPen and the app counts its four doses down as you log them. How the KwikPen count works.
Is Dozify available for Android?
No. Dozify is iPhone only.
Will Dozify tell me which Mounjaro dose to take?
No. It records the dose your prescriber chose and never proposes a dose or a change to it.
Is Dozify made by Lilly?
No. Dozify is an independent app. Mounjaro® is a trademark of Eli Lilly and Company, and Dozify is not affiliated with Lilly.
Read next
Guides, with their sources named: a missed dose, leaflet by leaflet, where to inject and how to rotate, counting the doses left in a KwikPen and storing a pen.
Elsewhere in Dozify: the shot tracker, site rotation, the Ozempic tracker and GLP-1 tracker apps compared.