The best GLP-1 tracker apps in 2026

It's the morning after your third shot. You feel a little off, you skipped lunch yesterday without meaning to, and you can't remember whether you injected on the left or the right. That's the moment most people go looking for a tracker — and the moment it becomes clear what a good one has to do: connect those three things.

A quick note: this list is written by the team behind Holt. Competitor details come from each app's own App Store page or website, checked on November 1, 2026.

What should the best GLP-1 tracker actually do?

A GLP-1 week has a shape. Shot day, a day or two when appetite drops and side effects show up, then a steadier stretch. A tracker earns its place when it shows you that shape — not when it gives you five separate lists to fill in.

That comes down to four things:

1. Doses with context — when you injected, where, and where to go next.
2. Food that's about enough, not less — protein, fiber and fluids, from a quick photo.
3. Side effects with timing and strength — so "day two is always rough" becomes something you can see.
4. Something to bring to your prescriber — a clear summary instead of a memory test.

1. Holt — our top pick

Holt is built around all four, in one app. Everything you log sits on the same dose-day timeline, so the connections show up without you having to look for them.

• Shot day, handled. A reminder and a Live Activity on your lock screen, an estimated medication-level chart with a countdown to your next dose, and Otto suggesting the next injection site in your rotation.
• Meals in one photo. Holt estimates calories, protein, fiber, carbs and fat from a picture of your plate — the fastest way to check you're eating enough when appetite is quiet.
• Side effects that make sense. Rate nausea, constipation, heartburn, food noise or fatigue by severity, and see them lined up against your dose days.
• A report your prescriber will actually read. Holt turns 30 days, 90 days or your full history into a doctor-visit PDF, with suggested questions to bring along.
• Everything else, quietly. Weight trend, water, daily habits, Apple Health sync, widgets — in 15 languages.

It's iPhone only for now, and some features are part of an optional subscription.

2. MeAgain — for Android users who want an AI companion

MeAgain covers doses, food by photo, barcode or search, and a side-effect journal, with an AI companion called Capy that also works over iMessage. It's available on iPhone and Android. Its App Store listing is English-only, and we couldn't find a report for appointments on it.

3. Shotsy — if you take more than one medication

Shotsy is shot-first: it handles several medications on separate schedules and charts estimated levels, on iPhone and Android. Photo meal logging isn't listed, so food tracking is lighter than Holt's.

4. Glapp — for compounded vials

If you draw doses from a vial, Glapp's supply tracking (concentration, volume, beyond-use dates) is built for that. A food log isn't listed, and side effects come through a daily check-in rather than tied to each dose.

5. MyFitnessPal — for calorie counting first

MyFitnessPal has a huge food database and has added GLP-1 dose logging in the US and Canada. It isn't built around shot day, so there's no medication-level chart or appointment report listed.

Why Holt comes out on top

Most GLP-1 trackers are really two apps glued together: a shot log and a food diary. Holt is designed the other way round — starting from the dose and asking what changed because of it. That's why it brings together what the others spread across separate features: side effects rated against your dose days, a suggestion for where your next shot goes, a five-nutrient meal scan and a report built for the conversation with your prescriber — in one calm app, in 15 languages.

What we'd track, whichever app you choose

1. Every dose and site — the backbone of everything else.
2. Protein at each meal — a photo is enough.
3. Side effects with a severity and a time — especially the 72 hours after a dose step.
4. Weight as a trend — a few mornings a week.

Try Holt for one full dose cycle — a shot day and the days after — and see whether the pattern shows up for you.

Download Holt free for your next dose cycle

Whichever app you pick, it records what you were prescribed and what you noticed. Questions about the dose itself belong with your prescriber or pharmacist.