Best GLP-1 Tracker App — Track Weight Loss, Doses & Side Effects
The GLP-1 tracker that connects your medication to real weight loss results.
Semaglutide · Tirzepatide · Retatrutide · Ozempic · Wegovy · Mounjaro · Zepbound
Regimen is a GLP-1 tracker that helps you stay on top of your semaglutide, tirzepatide, or retatrutide routine. Log every dose, track your weight loss over time, monitor side effects, and see how your medication is affecting your body composition, energy, and sleep, all synced automatically from Apple Health or Google Health Connect. Whether you're on Ozempic, Wegovy, Mounjaro, Zepbound, or compounded semaglutide, Regimen tracks it, with half-life data sourced from published clinical studies and FDA prescribing information. Free, every feature unlocked for your first medication. No paywall, no trial, no credit card. Rated 4.9 stars.
GLP-1 medications work. Tracking them shouldn't be hard.
Whether brand or compounded, the same problems surface:
Managing weekly injection timing across different GLP-1 compounds when you've switched brands or are comparing options
Losing track of your dose-schedule progress, especially on compounded versions without auto-shipped dose steps
No clear way to correlate your weight loss with specific doses, timing changes, or diet adjustments
Dose with precision
Regimen handles the dose math so you don't have to, including compounded vial conversions.
Compounded dose calculator
Using compounded semaglutide or tirzepatide from a vial? Input your vial size, bacteriostatic water volume, and target dose. Regimen tells you exactly how many units to draw.
Never miss a dose. Stay on schedule.
Stay consistent with zero effort. Regimen supports weekly injections, dose-step changes, and any schedule your medication needs, with smart reminders that actually help.
Every schedule you need
Weekly · specific days · split-week · every X days · twice daily · as-needed. Injections, pills, sprays. Your routine, your way.
Dose-step management
Log every step-up in your dose schedule with the date. When something shifts a week after a step, you can see it on the timeline instead of guessing.
See what's actually working
Correlate every dose and step-up against real health data. Stop guessing what's actually moving the needle for you.
Auto-sync from Apple Health & Google Health Connect
Weight, body fat, sleep, resting heart rate, and blood pressure flow in automatically. No manual logging required.
Log the signals your labs miss
Log energy, libido, sleep, and recovery alongside your numbers. See the response labs miss between pulls.
Correlate medications with health trends
Stepped up your dose three weeks ago? See exactly how your weight, energy, and side effects responded. Every dose change is overlaid on your health charts.
Know what's in your system
See estimated concentration curves for your compounds in real time. Know if you're at peak, trough, or steady state without waiting for labs.
Pharmacokinetic modeling for 150+ compounds
Regimen uses half-life data to model absorption, peak levels, and decay for every dose you take. See how levels build up over multiple doses.
Peak, trough & steady state visibility
Understand where you are in your dosing cycle at any moment. See projected future levels based on your current schedule.
Why tracking your GLP-1 matters
One app for any GLP-1
Ozempic, Wegovy, Mounjaro, Zepbound, compounded semaglutide, compounded tirzepatide — Regimen supports them all with the right calculator for each.
Switching made seamless
Changing from semaglutide to tirzepatide? Your full dose history carries over so you and your provider can make informed decisions.
Weight loss trend analysis
Daily weight noise hides real progress. Regimen's auto-synced health data shows your true trend and correlates it with every dose change.
What Regimen Tracks for GLP-1 Medications
Why people are switching to Regimen
"I finally feel in control of my weight loss journey. The photo comparison feature is addictive. Seeing my progress next to the tracking data motivates me way more than just the number on the scale."
Sarah K., GLP-1 User
"Started Zepbound a few months ago and needed something to track my doses and weight. This app is perfect, reminders keep me on schedule, I can log my injections and see my progress all in one place. The progress photos feature is really motivating too."
Nooshnili, USA
Your data stays private
Your health data is stored securely. We never share, sell, or monetize your information. What you track is your business, not ours.
See what's actually working
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 of your GLP-1 week, or your energy dips as the dose wears off. It's not a summary of what you logged: it's what actually changed.
How Regimen compares to Shotsy, Glapp, and MeAgain for GLP-1 tracking
| App | Platforms | Multi-Compound | Med-Level Curves | Reconstitution Calc | Health Sync | Free Tier |
|---|---|---|---|---|---|---|
Regimen | iOS + Android | GLP-1 + peptides + TRT | Free | Built-in | Apple Health + Google Health Connect | One compound free |
Shotsy | iOS + Android | GLP-1 only | Premium ($9.99/mo or $39.99/yr) | No (pen-focused) | Apple Health (paid) | Freemium |
Glapp | iOS + Android + web | GLP-1 only | Free (PK curves) | No | Apple Health + Health Connect (Android) | Free |
MeAgain | iOS + Android | GLP-1 only | Yes (estimated view) | No | No (not advertised) | Freemium |
Feature coverage based on publicly available app descriptions and pricing as of July 2026. See each app's App Store listing for current details.
Frequently Asked Questions
What is the best app to track GLP-1 injections?
Regimen is the top-rated GLP-1 tracker app. It logs every dose, calculates syringe units from your vial concentration, tracks your weight and body composition via Apple Health and Google Health Connect, and shows how your GLP-1 routine is affecting your health metrics over time. Free for one compound with every feature unlocked. Rated 4.9 stars on the App Store.
What's the best way to track my GLP-1 medication?
Regimen logs each injection with the date, dose, and injection site. It supports semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), and compounded versions. Smart reminders keep you on schedule.
Can Regimen track my GLP-1 titration schedule?
Yes. Set your current dose and Regimen tracks your titration phase. Whether you're on semaglutide or tirzepatide, you'll see exactly where you are in the titration timeline.
What happens if I miss my weekly GLP-1 injection?
Missed-dose rules differ by medication. Semaglutide allows up to 5 days to take a missed dose; tirzepatide allows up to 4 days (96 hours). Regimen tracks your last injection date so you always know where you stand.
Can Regimen track my weight loss on a GLP-1?
Yes. Regimen syncs with Apple Health and Google Health Connect to pull weight, body fat, and other metrics automatically. See your weight loss trend correlated with your dose changes.
Does Regimen support compounded semaglutide and tirzepatide?
Yes. If you're using compounded GLP-1 medications from a vial, Regimen's built-in dose calculator converts your target milligram dose to exact syringe units based on your vial concentration and reconstitution volume.
Can I split my weekly GLP-1 dose into multiple injections?
Some providers prescribe split dosing to reduce side effects. Regimen supports any custom schedule — whether you inject once weekly, twice weekly, or on any other pattern — and calculates the correct dose per injection.
Stop guessing. Start optimizing.
Your GLP-1 routine deserves better than a notes app and a calendar.