A Zepbound® tracker app for the weekly shot, site rotation and side effects

Zepbound is one injection a week. Dozify shows how many days are left until the next one, reminds you on the day, suggests the next injection site and keeps your weight and side effects next to each dose. It records the plan your prescriber set; it never calculates or changes a dose.

What the Zepbound label says

Quoted from the US prescribing information on DailyMed, checked on 11 November 2026. The leaflet that came with your pen or vial is the one that applies to you.

Schedule: "Administer ZEPBOUND once weekly at any time of day, with or without meals."
Where: "Inject ZEPBOUND subcutaneously in the abdomen, thigh, or another person should inject 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)."

The US label lists four presentations: a single-dose pen, a single-dose vial, a multi-dose vial and a KwikPen®, the last two holding four doses each. Zepbound is tirzepatide, the same molecule as Mounjaro®; outside the United States, tirzepatide for weight management is usually sold as Mounjaro, and the Mounjaro tracker app page covers it.

What Dozify does for someone on Zepbound

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.
Vials and KwikPens. With Premium, the app counts the doses left in a vial or a KwikPen as you log them and keeps the days since a vial was opened. See vial tracking.
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.

Dozify home screen counting the days to the next weekly Zepbound injection

Dozify stock screen with the doses left in a vial and the days since it was opened

When a dose is late

"Missed my Zepbound dose by two days" is a common search, and the label answers it in days counted from the missed dose. Dozify keeps the date of every injection you log, so you can see exactly how many days have passed instead of reconstructing the week. What to do with that number is in your leaflet; if you are unsure, ask your pharmacist or prescriber. The app does not decide it for you. The windows for every GLP-1, side by side: what each leaflet says about a missed dose.

What Dozify will not do

It does not calculate doses, work out how much to draw from a vial, convert between pens and vials 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.

Download on the App Store

Questions

Is there a free Zepbound tracker app?

Dozify is free to download, and logging Zepbound 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, that adds vial and KwikPen dose counts, the doctor-visit report, trend charts, AI meal estimates after the first one and the estimated level curve.

I missed my Zepbound dose by a few days. What does the label say?

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 that came with your medicine 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 Zepbound?

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 Zepbound vials?

Yes. Logging each dose is free whether you use a pen or a vial. With Premium, the app also tracks what is left in a vial and the days since you opened it. It never tells you how much to draw up; that comes from your prescriber and the instructions with your vial.

Is Dozify available for Android?

No. Dozify is iPhone only.

Is Dozify made by Lilly?

No. Dozify is an independent app. Zepbound® and Mounjaro® are trademarks of Eli Lilly and Company, and Dozify is not affiliated with Lilly.

Sources

Dozify is a tracking tool, not a medical device. It does not recommend doses and does not provide medical advice. Zepbound®, Mounjaro® and KwikPen® are trademarks of Eli Lilly and Company; Dozify is not affiliated with Lilly.