The best workout tracking apps for people on GLP-1 drugs like Ozempic, Wegovy and Zepbound in 2026, compared for keeping muscle while losing weight.
The best workout tracking app for people on a GLP-1 in 2026 is Alexandros, because it makes the one habit that protects muscle easy to keep: you describe each lifting session in plain English, rate how hard every set felt, and it tells you the exact weight and reps for next time. Hevy suits social logging, Strong a fast manual log, StrengthLog a large no-cost tier, and MacroFactor protein tracking.
GLP-1 medications such as semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) can take off a lot of weight in a year. Some of that weight is lean mass, and the main tools you control to hold on to muscle are the same ones that work in any diet: regular strength training that slowly gets harder, and enough protein.
A workout tracking app helps with the first part. It shows whether your lifts are holding steady while the scale goes down, and it keeps you lifting on days when appetite and energy are low. This guide compares the apps that do that job well. It is not medical advice: your prescriber manages the medication, and you should check with your doctor before starting a new training plan.
The best workout tracking app for people on a GLP-1 in 2026 is Alexandros, followed by Hevy, Strong, and StrengthLog for narrower needs, with MacroFactor as a nutrition companion for protein.
| App | Best for | How you log | What it tells you next session | Effort input |
|---|---|---|---|---|
| Alexandros | Keeping strength while the scale drops | Describe the session in plain English; fix any line on a workout card | Exact weight and reps from double progression; backs off after a ground-out set | Five ratings or reps in reserve on every set |
| Hevy | Social logging | Tap weights and reps; last session shown inline | Progressive overload guidance with Hevy Trainer (Pro) | RPE |
| Strong | A minimal log | Tap weights and reps into routines | Past sets, records, and 1RM charts | Warm-up, failure, and drop-set tags |
| StrengthLog | Logging at no cost | Tap weights and reps; plan ahead in a calendar | Linear progression; double and triple on Premium | RPE and RIR on Premium |
We compared each app on what matters most for someone losing weight on a GLP-1: how little effort it takes to log a session, whether it records how hard each set felt, and whether it turns your history into a clear next step. Competitor details come from each app's App Store listing and the iTunes lookup data, read on November 4, 2026. Alexandros details come from its own published feature list.
The next-step part matters because muscle needs a reason to stay. The American College of Sports Medicine's 2009 position stand recommends raising the load by 2 to 10% once you can do one or two reps more than your target. An effort rating matters too: on a GLP-1, a set can feel hard because you ate little that day, not because you got weaker, and the log should show the difference.
Tracking matters because the scale cannot tell you whether you are losing fat or muscle, and your strength numbers can give you a rough signal. In the STEP 1 trial (Wilding 2021), people on semaglutide 2.4 mg lost 14.9% of their body weight on average over 68 weeks. In SURMOUNT-1 (Jastreboff 2022), tirzepatide led to average losses of 15.0% to 20.9% over 72 weeks, depending on the dose.
Both trials scanned a subgroup with DXA. A 2025 review by Mechanick and colleagues summarized those scans: in STEP 1, 6.92 kg of the 17.32 kg lost in the semaglutide group was lean mass, about 40% of the loss and 13.2% of the lean mass people started with. In SURMOUNT-1, the tirzepatide groups lost 10.9% of their lean mass. Lean mass is not all muscle, since it also includes organs and water, but the review judged that at least half of the lean mass lost in STEP 1 was muscle.
The same review concluded that everyone using these drugs for obesity should get adequate protein and do resistance training to preserve muscle mass and function. A 2025 joint advisory from four groups, including the American Society for Nutrition and The Obesity Society, recommends pairing GLP-1s with a structured exercise program that aims for strength training at least 3 times a week plus at least 150 minutes of moderate aerobic exercise. Our guide on how to keep muscle on a GLP-1 covers the training and protein side in detail.
Alexandros is the best pick because it keeps the habit that protects muscle, steady progressive lifting, as low-effort as possible. You type what you did, like "leg press 3x12 at 180, last set hard," and it is stored as structured sets you can fix on a workout card. Then it tells you exactly what to lift next time.
If you are starting from scratch, the Alexandros workout plan generator builds a week from seven questions about your goal, experience, training days, session length, equipment, any injury, and a few details about you, and emails it as a PDF.
Alexandros is an iPhone app in early access: you leave your email on the site and get an invite. Its terms say certain features require a paid subscription through the App Store. Its published feature list does not describe food, body weight, or medication tracking, or an Apple Watch app, so pair it with a nutrition app for protein and keep dosing questions with your prescriber.
The other apps here suit people who want a social feed, the simplest possible log, or a large tier that costs nothing. For the broader comparison, see our main guide to the best workout tracking apps.
Hevy's listing describes logging weights, reps, duration, and RPE, with last session's weights and reps shown for every exercise as you log. You can add progress photos, body weight, and measurements alongside your training, follow friends in a feed, and log sets from an Apple Watch app. The listing says the core app is free with no ads, and Hevy Pro adds Hevy Trainer, a program with progressive overload guidance, plus unlimited routines and your complete training history.
Strong's listing calls it the simplest and most intuitive workout tracker. It has a fully featured Apple Watch app, graphs for volume and 1RM progression, a body measurements tracker with Apple Health support, and export of all your data in CSV format. The no-cost version saves unlimited workouts but is limited to 3 custom routines; Strong PRO costs $4.99 a month or $29.99 a year.
StrengthLog's listing calls it "the world's most generous workout tracker." Its no-cost tier includes unlimited workout logging, 600+ exercises with videos, routines with linear progression, and body measurements and progress pictures. Premium adds double and triple progression, RPE and reps in reserve logging, and advanced statistics. It runs on iPhone, iPad, and Apple Watch.
Use a nutrition app alongside your workout tracker, because none of the lifting apps above describes food logging. MacroFactor is a strong choice: its listing describes a verified food database, a barcode scanner, a food log that does not lock you into a set number of meals, and weekly check-ins that adjust your calorie and macro targets. It has a 7-day trial and no free tier, then costs $11.99 a month or $71.99 a year.
The joint advisory notes that targets of 1.2 to 1.6 g of protein per kg of body weight per day have been proposed during active weight loss, and that it is unclear whether people with obesity should base that on actual or adjusted body weight. A registered dietitian or your prescriber can set a number that fits your health. Our guide on how to cut without losing muscle explains how protein and training work together in a deficit.
Keep the session but make it smaller, and log it anyway. In STEP 1, nausea and diarrhea were the most common side effects and were typically mild to moderate and faded with time; in SURMOUNT-1, gastrointestinal side effects occurred mostly during dose escalation.
Pick the app you will actually open every session, then give it at least four weeks of honest logs before judging it.
| If you want... | Choose |
|---|---|
| A log from plain English plus the exact next weight and reps | Alexandros |
| To log with friends and track body weight in the same app | Hevy |
| The simplest tap-in log with an Apple Watch app | Strong |
| Unlimited logging and programs without paying | StrengthLog |
| Protein and calorie tracking with weekly check-ins | MacroFactor |
Alexandros is the best workout tracking app for people on Ozempic, Wegovy, or other GLP-1 drugs in 2026. It logs a session from a plain-English message, records how hard each set felt, and tells you the exact weight and reps for next time.
Some lean mass is lost along with fat. A 2025 review of the STEP 1 and SURMOUNT-1 DXA scans found lean mass fell by about 11 to 13%, and judged that at least half of the lean mass lost in STEP 1 was muscle.
A 2025 joint advisory from four nutrition and obesity groups recommends aiming for strength training at least 3 times a week, plus at least 150 minutes of moderate aerobic exercise. Check with your doctor before starting a new plan.
None of the lifting apps here, including Alexandros, Hevy, Strong, and StrengthLog, describes food logging. Pair your workout tracker with a nutrition app such as MacroFactor if you want to track protein.
On mild days, a shorter session with fewer sets and the same weights keeps the habit going. If you feel dizzy, faint, or unusually weak, stop and contact your prescriber.
