GLP-1 weight loss calculator
Enter your starting weight to see what the average results of the main semaglutide (Wegovy) and tirzepatide (Mounjaro…
GLP-1 injection tracker GLP-1 Shot Tracker : OneShot
Every GLP-1 shot, on one clean timeline.
Every GLP-1 shot, on one clean timeline.
OneShot keeps your GLP-1 journey organised — log injections, doses and site rotation, and see your progress on a single, calm timeline. Built for people on semaglutide and similar treatments.
A countdown to your next dose, with reminders the day before, on shot day and in the evening if you haven't logged it.
Twelve body zones across the abdomen, thighs, arms and hips, so you don't keep using the same spot.
Enter the schedule your doctor set and OneShot tells you when it's time for the next dose step.
Side effects are linked to the shot they followed, next to your weight trend.
| OneShot | Paper or notes app | |
|---|---|---|
| Next-dose countdown and reminders | Yes | No |
| Site rotation across 12 zones | Yes | By hand |
| Side effects linked to each shot | Yes | By hand |
| Weight trend and BMI | Automatic | By hand |
OneShot is a logging and reminder tool, not medical advice. Always follow your doctor's instructions.
Every shot (date, dose, medication and injection site), your titration steps, weight and BMI, side effects linked to the shot they followed, meals by photo, barcode or description, water, steps and progress photos — all on one timeline.
Tirzepatide (Mounjaro and Zepbound, pens and vials) and semaglutide (Wegovy and Ozempic), with the official dose steps preloaded. You can also add a custom medication with its own dose and schedule.
Yes. OneShot calculates your next shot and reminds you the day before, on shot day, and in the evening if you haven't logged it yet. It tracks twelve body zones across the abdomen, thighs, arms and hips so you can rotate injection sites and avoid skin reactions.
No. OneShot is a logging and reminder tool. It doesn't replace advice from your doctor and doesn't sell medication. GLP-1 medications are prescription drugs: always follow your doctor's instructions, especially for dose changes.
Yes. OneShot is free to download on the App Store (iOS 15.5 or later) and on Google Play. On iPhone it can sync with Apple Health, and on Android with Health Connect, if you allow it.
OneShot doesn't need an account: your entries are stored on our servers, linked to a random identifier created on your device rather than your name or email. AI features such as meal analysis and weekly insights use Google's Gemini API. To erase everything, open Settings in the app and choose Delete Account; the OneShot section of our privacy policy has the details.
Download it free on the App Store.
App Store
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App Store
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Google Play
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