Best GLP-1 Tracker App in 2026: 7 Free & Paid Apps for Ozempic, Wegovy, Mounjaro & Zepbound

Last updated: July 2, 2026 · By Regimen Team · Retested quarterly and after major app releases

You started your shot, and suddenly there's a lot to keep track of. Which day is injection day. Which side you used last week. Whether the nausea that hit on day two is normal, or something to mention to your doctor. And underneath it, the low-grade worry that you'll forget your weekly dose entirely, because a weekly medication is weirdly easy to forget.

That's the moment most people go looking for a GLP-1 tracker. Not to optimize anything. Just to stop juggling reminders, sticky notes, and a Notes-app list of side effects.

We compared the GLP-1 tracker apps people actually recommend, on the things that matter on a GLP-1: never missing your shot, rotating injection sites, watching the weight come off, and making sense of side effects as you titrate up. Here's the honest breakdown.

Weight is the most-tracked metric on Regimen, logged by roughly four in five users. (Anonymized and aggregated across thousands of users.)

The best free GLP-1 tracker app in 2026 is Regimen; the most established paid option is Shotsy; the best free medication-level visualizer is Glapp.

The free GLP-1 tracker most people end up on

• Weekly shot reminders so you never miss a dose
• Injection-site rotation that suggests where to go next
• Free for one medication. iOS and Android.

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How we compared these apps

We evaluated each app on the things that actually matter on a GLP-1 shot: weekly dose reminders, injection-site rotation, weight and progress-photo tracking, side-effect logging tied to the dose, and — where the app supports it — the estimated medication-level curve. We reinstalled and re-checked the native apps we could install in June 2026; DoseDiary (web-only) and the iOS-only apps we don't run daily are described as "compared," not "tested," because we haven't lived in them.

Regimen is our own app. We rank it #1 on this list because the free tier genuinely covers what a GLP-1 user needs, including the medication-level curve. Other apps' entries reflect their public listings as of the update date above; if you spot a stale detail, tell us at /contact and we'll re-check.

At a glance: all 7 apps compared

Feature coverage based on publicly available app descriptions as of July 2026. See each app's App Store or Play Store listing for current details.

The 7 best GLP-1 tracker apps in 2026

1. Regimen — best for understanding how you're responding

Regimen does the GLP-1 basics as well as anyone, free for one medication: weekly shot reminders so you never miss a dose, injection-site rotation that logs where you went and suggests where to go next, your weight trend with side-by-side progress photos, and side-effect logging tied to your dose.

Even if a GLP-1 is all you track, Regimen shows you more than a shot log. The medication-level curve — how much semaglutide or tirzepatide is in your system between shots, the thing that explains a mid-week energy dip or hunger creeping back — is free in Regimen. Shotsy puts that same feature behind its premium plan. On top of it, Regimen tracks your side effects in detail and lets you add your bloodwork, all mapped to your dose history, so you can see what's actually driving how you're responding, not just your weight. Regimen's Signals feature watches your check-ins and tells you the pattern it finds: your food noise tends to creep back around day 5, or your energy dips as the dose wears off. Glapp shows you the clinical-average curve; Regimen shows you that too, then connects it to your own numbers. And if you're coming from Shotsy, Regimen imports your data so you don't start over.

Strengths: the medication-level curve is free (Shotsy charges for it); the deepest side-effect tracking on this list; bloodwork logging; import from Shotsy; on both iOS and Android.

Limitations: no built-in food, protein, or water logging (Shotsy and MeAgain do that); newer, smaller review base than Shotsy.

Best for: anyone who wants to understand why the numbers on the scale are (or aren't) moving, not just log the shot.

See what your dose is actually doing

• Estimated medication-level curve, free for your first compound
• Side-effect logging tied to your dose, not a separate list
• Coming from Shotsy? Import your history in one tap.

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2. Shotsy — best if you want the most popular, established pick

Shotsy is the most popular GLP-1 tracker by a wide margin — years in the App Store, a large user base, and a polished app. The free tier covers dose logging, injection-site rotation, weight, side effects, and built-in food, protein, and water tracking (something Regimen doesn't have). If a GLP-1 is all you'll ever track and you want the option most people use, it's a reasonable pick.

Strengths: ~26K ratings; medication-level charts; built-in nutrition (calories, protein, water); polish and community scale.

Limitations: priciest tier on this list; the medication-level chart most GLP-1 users want is on the premium tier; several recent App Store reviews mention features moving to premium over time.

Best for: single-GLP-1 users who want the biggest community plus built-in nutrition, and don't mind paying.

3. Glapp — best free medication-level visualizer

A free GLP-1 tracker on iOS, Android, and web, built around pharmacokinetic visualization: estimated medication levels over time based on your dose and timing, and a comparison against published GLP-1 clinical studies. Also tracks "food noise" — the GLP-1 community's term for intrusive food thoughts.

Strengths: free estimated medication-level view; clean comparison against clinical-trial data; side-effect and injection-site rotation tracking; Apple Health and Health Connect on Android.

Limitations: lighter on day-to-day tracking (bloodwork, multi-compound) than a full-featured app.

Best for: data-curious users, as a supplement to a real tracker rather than a replacement.

4. MeAgain — best simple all-in-one first app

Focused shot logging with reminders, AI-assisted food logging, protein and water tracking, and progress photos in one dashboard. Cleanly built.

Strengths: low-friction shot logging; AI food logging; built-in protein and water; estimated medication-level view; clean UI for a new patient; on both iOS and Android.

Limitations: newer with a smaller review base; no bloodwork.

Best for: someone who wants the basics without overload.

5. GLP1 Tracker (Tirzepatide) — best Mounjaro/Zepbound-focused pick

Focused specifically on tirzepatide (Mounjaro and Zepbound). Injection logging, side effects, weight, protein, and water in a small, focused app. iOS-only with a small review base — worth a look if you're on tirzepatide and want an app built around it.

6. DoseDiary — best zero-commitment web logger

A lightweight web app for simple dose scheduling and progress. Nothing to install. Web-only means no native shot notifications and no health-app sync — better as a quick try than a long-term home.

7. GlucoPal / Zepbound Tracker — best medication-specific store listing

This developer publishes separate app listings targeting specific medications (Zepbound, Wegovy, Mounjaro variants). Easy to find if you search for your exact drug — but multiple listings for what appears to be the same underlying product is a caution flag. Check the "last updated" date and recent reviews before committing.

Head-to-heads

Shotsy vs Glapp

Shotsy is a full-featured native GLP-1 app on iOS and Android — shot reminders, injection sites, weight, side effects, and built-in food logging. Glapp is a native app (iOS, Android, and web) focused on one specific thing: an estimated medication-level view compared against clinical-trial data. Different tools for different jobs. Shotsy is the day-to-day home; Glapp is a supplement. Both fall short on giving you a free medication-level curve inside an app that also reminds you to inject and connects it to your own numbers, which is why we put Regimen first.

MeAgain vs Shotsy

MeAgain is a clean, focused app for a new GLP-1 patient who just wants to log the shot, drink enough water, and hit a protein target — now on both iOS and Android, with an AI-assisted food logger and its own estimated medication-level view. Shotsy is the bigger, more established option, with a longer feature list. If a nervous first-week patient is looking for the least intimidating option, MeAgain is that. If they want the app most people are on, it's Shotsy. Both fall short on connecting your dose to your side effects and weight over time, which is why we put Regimen first.

Shotsy vs GlucoPal

Shotsy is one polished app that handles Ozempic, Wegovy, Mounjaro, and Zepbound in a single tracker. GlucoPal's developer ships separate app listings per medication, which makes the app easy to find in a store search but creates confusion about which listing is actively maintained. Shotsy is the more coherent product; GlucoPal is easier to find if you searched your exact medication by name. Both fall short on the free medication-level curve most GLP-1 users want, which is why we put Regimen first.

How to pick the right app

Start tracking your shot in about a minute

• One medication free — every feature unlocked, no trial timer
• Reminders, injection sites, weight, side effects, med-level curve
• iOS and Android · import from Shotsy

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Frequently asked questions

Not medical advice. This is an app-comparison article for people already on or considering a GLP-1 medication under a clinician's care.