The best GLP-1 tracker apps for iPhone, compared

How we compared

We judged each app on nine things a GLP-1 log should handle. We read each app’s App Store listing (US store), its official website and, for privacy, the App Store privacy label. We did not rank apps by star ratings, because ratings change every day and say little about what you need.

Here is what we looked for, and why it matters for your notes. Our guide to what a GLP-1 medication tracker should record goes deeper on each field.

• Dose or shot log: the medication, amount and time, entered exactly as your label reads.
• Reminders: a heads-up before your next dose, for each medication you take.
• Site rotation: a record of where each shot went, ideally on a body map. See our injection site rotation log guide.
• Side effects: what you felt, when, and how strongly, next to your dose dates. More in our side effect diary guide.
• Protein, fiber and food: many people on GLP-1 medication eat smaller meals, so the nutrients you care about should be easy to log. See how to track protein and fiber.
• Weight trend: weigh-ins shown as a trend, not just a list of numbers.
• Doctor report or export: a summary you can share at an appointment. See what to put in a progress report.
• Privacy: what the app says it collects, and whether it says data is used to track you.
• Platforms: iPhone only, or iPhone and Android.

We also left one thing out on purpose: none of these apps should tell you what dose to take. If you want a refresher on what trackers can and can’t do, read how GLP-1 tracking apps work.

Comparison table

All six apps log doses and side effects, and five show an estimated medication level. The biggest differences are in food tracking, doctor reports and Android support. “Not stated” means we could not find the feature on the app’s listing or website, not that the app lacks it.

Swipe the table sideways to see every column →

Privacy is hard to fit in a cell, so it’s covered app by app below. Every app here says it is for tracking only and does not give medical advice.

App-by-app notes

Each app has a clear strength. Shotsy is a polished shot log with PDF export, MeAgain and Pep lean into food and progress photos, Glapp focuses on dose cycles and supply, Glippy offers CSV export, and PenPal puts protein, fiber and a gentle penguin at the center.

PenPal (this site)

PenPal logs shots and pills on weekly, daily or custom schedules, with reminders and a body map for injection sites. It puts protein and fiber first, with photo and barcode meal logging, plus water, a side effect diary, weight, steps from Apple Health and an estimated medication level. It makes a PDF progress report for the dates you choose. It also tracks your pen supply, and it speaks 29 languages.

Where others are stronger: PenPal is iPhone only; the five other apps here also run on Android. Glippy offers CSV export, which PenPal does not. PenPal’s App Store privacy label lists purchases, identifiers and usage data under “Data Used to Track You.” Our privacy policy explains that this is for measuring which ad campaigns lead to installs, and that health data is never sold or used for advertising. Shotsy, Glapp, Pep and Glippy list nothing under that heading.

Shotsy

Shotsy covers injections and daily pills, with countdowns and reminders, estimated medication levels and support for more than one medication at a time. Its website lists a visual injection rotation map and PDF export “to share with your care team.” It logs weight, calories, protein and water, and imports these from Apple Health. Its listing says data is stored on your device and synced with iCloud. It is also on Google Play. (App Store, website)

MeAgain

MeAgain logs shots and pills, dose timing and injection sites, with reminders and medication-level context. Food logging uses photos, barcodes and search, and it tracks protein, fiber and water. It has a side effect journal, a weight trend, progress photos and widgets. It also has an AI companion called Capy. We found no doctor report or export on its listing or website. Its App Store privacy label lists identifiers and usage data under “Data Used to Track You.” It is on iPhone and Android. (App Store, website)

Glapp

Glapp logs each shot with dose, timing and site, and adds a daily check-in for side effects, cravings, mood, energy and sleep. Its focus is the dose cycle: an estimated medication level curve, “shot phases,” and food noise and hunger tracking. It has the most detailed supply tracker we saw, with vials, pens, concentration and beyond-use dates. Its website also lists progress reports, milestones and predictions. We found no meal or protein logging on its listing or website. It is on iPhone and Android. (App Store, website)

Pep

Pep (the “GLP-1 Weight Loss Tracker: Pep” app) logs weekly shots and daily pills, with reminders, site rotation, dose escalation history and an estimated medication level. It has an AI photo food scanner plus barcode and search, with goals for protein, fiber and water. It tracks weight, body measurements and progress photos, and its listing says progress photos are encrypted on your phone before upload. It supports a long medication list, including compounded options, and runs on iPhone, iPad and Android. We found no doctor report or export. (App Store, website)

Glippy

Glippy keeps things simple. A daily check-in records weight, calories, protein, water and side effects, and it has dose reminders and charts that line up side effects with shot days. It is the only app here that lists CSV export as well as PDF. It also has a community for questions and wins. Its listing says no name, address or phone number is required. We found no site rotation or medication level estimate on its listing or website. It is on iPhone and Android. (App Store, website)

Which one fits you

Start with your biggest need. If you need Android, skip PenPal. If food and protein matter most, compare PenPal, MeAgain and Pep. If you want a report for your doctor, check PenPal, Shotsy and Glippy first.

• “I’m on Android, or switching soon.” Shotsy, MeAgain, Glapp, Pep and Glippy are on Google Play. PenPal is not.
• “Eating enough protein and fiber is my struggle.” PenPal, MeAgain and Pep all log both, with photo and barcode entry.
• “I want something to show my doctor.” PenPal and Shotsy make PDF reports; Glippy exports PDF and CSV. A one-page progress report is worth having whichever app you pick.
• “I want to understand my dose week.” Glapp leans hardest into shot phases and food noise; most others show a level estimate too. Treat any curve as an estimate, never as a reason to change a dose.
• “I want to watch my body change.” Pep tracks measurements and progress photos; MeAgain has progress photos.
• “Logging feels like homework.” PenPal’s penguin reacts to what you log and never scolds, and streaks freeze instead of breaking on a missed day.

Before you commit, open the App Store privacy label of any app you are considering. MedlinePlus suggests asking who runs a health resource and whether it’s trying to sell you something; that applies to this page too.

Which PenPal is this?

This page is from the PenPal listed on the App Store as “GLP 1 Tracker: PenPal GLP1” (app id 6760750562), made by the team behind trypenpal.app. A separate app called “PenPal: GLP-1 Shot Tracker” (app id 6758325416) comes from a different developer and is not related to us.

If you are looking for the penguin, the protein and fiber goals and the PDF progress report described here, use the App Store link on this page, or check that the listing shows our website, trypenpal.app. Questions are welcome at our FAQ.