Notes on your phone, a photo of the scale, a notebook somewhere at the bottom of your bag: when you’re on a GLP-1 treatment, the important details tend to end up scattered. And on the day of your appointment, you have to piece everything together from memory. Since 21 September 2026, there’s an easier way: MounjaGO, the Mounjaro tracker app for iPhone, is available on Apple’s App Store. Built for people on Mounjaro, Zepbound, Ozempic or Wegovy, it brings your injections, your weight, your meals and your notes together in one place, in your pocket. And if you already use MounjaGO on the web with lifetime access, good news: the iPhone app is free for you.
The Mounjaro tracker app for iPhone: what it changes day to day
MounjaGO isn’t just another app on your Home Screen: it’s the logbook of your treatment. Everything you used to jot down here and there now lives in one place, in order, and ready to show your doctor.
Here’s what you’ll find in the Mounjaro tracker app for iPhone:
- Your injections: date, dose and injection site in a few seconds. Your whole history is one glance away, handy for knowing where you are in your dose steps.
- Your weight: a clear chart from your starting weight to today, so you see the trend rather than day-to-day swings.
- Your progress photos: because the scale doesn’t tell the whole story, and changes often show before they weigh in.
- Your meals from a photo: tap “Photograph a meal” and snap your plate. Mistral AI identifies the foods and estimates portions, then calories and macros are cross-checked against reference nutrition databases (CIQUAL, USDA). You review the result before saving it, and the photo is never stored. Our guide to counting calories from a photo explains how it works.
- Your weekly menus: at each weigh-in, type in your meals or import them as a PDF. Mistral AI calculates their calories, so you can link what you eat to how your weight changes.
- A report for your doctor: a clean PDF of your doses and weight, sent by email, Messages or AirDrop in one tap.
- A Face ID lock: if you turn it on, MounjaGO asks for Face ID, Touch ID or your iPhone passcode every time it opens.
You’ll find the tracking you know from the web, plus the Face ID lock, which only the iPhone offers. For a full tour of the tracking features, our guide to all MounjaGO tracking features walks through every screen.
Why switch from the website to the iPhone app?
Until now, getting MounjaGO on your iPhone meant adding the website to your Home Screen from Safari. It worked, but many people never knew the trick. And a web page, however good, can’t use everything your phone can do.
The native app changes two things. First, installing becomes obvious: one tap on “Get” in the App Store, like any other app. Second, your report for your doctor goes straight out through the iPhone share sheet, with no download step. And new features simply arrive with App Store updates.
Already a customer: is the app really free for you?
Yes. If you already bought lifetime access on mounjago.com, there’s nothing to pay on iPhone. Download the app and sign in with your usual email and password: your access is recognised automatically.
For us, this was a given. MounjaGO’s first users trusted us when the app only existed on the web. We were never going to charge them twice for the same tool just because it arrived on a new platform. Lifetime access stays lifetime access, whether you open MounjaGO in your browser or on your iPhone.
How much does MounjaGO cost if you’re new?
The download is free. Full access costs €12 for life, as a single purchase inside the app; outside the eurozone, the App Store shows the equivalent in your local currency. No subscription, no quiet renewal after a month: you pay once, and your tracking stays with you for the whole of your treatment and beyond.
For comparison, €12 is often what subscription health apps charge for a single month. A GLP-1 treatment runs for many months: a one-off purchase means you never have to wonder, at each renewal, whether the app is still worth it.
Does your health data stay private on iPhone?
Yes, and it’s the principle MounjaGO was built on from day one. Weight, doses, symptoms, photos: this is intimate information. Your health data is encrypted with AES-256 right on your iPhone, using a key that depends on your password. We cannot read it.
When you analyse a dish or a menu, the app asks for your consent every time before sending it to Mistral AI. You can always decline and enter your meals by hand. The app has no advertising pixels. You can also lock it with Face ID, so nobody can open it if you lend your phone. And you stay in control to the end: you can delete your account from inside the app in a few taps, without having to email us.
How do you install MounjaGO on your iPhone?
It takes less than a minute. The easiest way is the direct link: download MounjaGO: suivi GLP-1 on the App Store. You can also open the App Store and search for “MounjaGO”.
- Tap Get, then confirm with Face ID, Touch ID or your passcode.
- Open MounjaGO: the app uses your iPhone’s language (English, French, Spanish or Portuguese).
- Already have an account? Sign in with your usual details. Your lifetime access is recognised.
- New to MounjaGO? Create your account, enter your treatment and starting weight, then log your first injection.
The app works on any iPhone running iOS 15 or later. On an older model, MounjaGO still works in Safari at mounjago.com. And on Android, until the Google Play version is out, install it from Chrome by adding the site to your Home Screen.
Why logging every Mounjaro injection really makes a difference
Keeping a log can feel like a detail. Research says otherwise: a review of 22 weight-loss studies found a consistent link between recording your data and losing weight. The more people recorded, the more they lost, and the better they understood what was happening week after week.
On Mounjaro, tracking has an extra purpose. Doses step up, usually every four weeks, and side effects can change at each step. In the SURMOUNT-1 trial, people taking tirzepatide lost up to 20.9% of their body weight over 72 weeks. A journey that long is far easier to manage with a reliable history than with memory. And at your appointment, a report showing every dose, weigh-in and symptom helps your doctor decide the next step with confidence.
To see where you’re starting from before your first weigh-in in the app, check your BMI and weight-loss projection.
FAQ: the MounjaGO app for iPhone
Is the MounjaGO app free?
The download is free. Full access costs €12 for life as a single purchase, with no subscription. If you already bought lifetime access on mounjago.com, the iPhone app costs you nothing: just sign in with the same account.
Do I need a new account for the iPhone app?
No. Use the same email and password as on the website: your account and your access are the same everywhere.
Which iOS version do I need to install MounjaGO?
iOS 15 or later. The app is available in English, French, Spanish and Portuguese.
Is MounjaGO available on Android?
Not on Google Play yet. Meanwhile, install MounjaGO from Chrome: open mounjago.com, tap the three dots at the top right, then “Add to Home screen”.
Does MounjaGO replace my doctor’s advice?
No. MounjaGO is a tracking tool: it gives no medical advice and never recommends a dose. It helps you document your treatment so you can discuss it with your healthcare professional. Ready to try it? Download MounjaGO on the App Store.
Sources
- “MounjaGO: suivi GLP-1” App Store listing, Apple.
- Burke L. E., Wang J., Sevick M. A., “Self-monitoring in weight loss: a systematic review of the literature”, Journal of the American Dietetic Association, 2011.
- Jastreboff A. M. et al., “Tirzepatide Once Weekly for the Treatment of Obesity” (SURMOUNT-1), New England Journal of Medicine, 2022.
This article is for information only and is not medical advice. Mounjaro, Zepbound, Ozempic and Wegovy are prescription-only medicines: never change your treatment without your doctor, and never buy them outside legal channels. MounjaGO is an independent app, not affiliated with Eli Lilly or Novo Nordisk, and a tracking tool, not a medical device. Apple, iPhone and App Store are trademarks of Apple Inc.