MuscleLab vs CurlBro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MuscleLab
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MuscleLab is a focused strength training tracker for people who want to train consistently and see real progress over time. Start from a saved template, generate a workout from exercises you practise, or begin with an empty session. Log sets as you train, then finish with a clear summary of volume, time, sets, muscles, and exercise changes. Built for gym training: • Workout templates you can repeat • Recommended workouts from practising exercises and training type • Fast set, rep, weight, and duration logging • Warm-ups, supersets, circuits, and drop sets • Finished workout summaries with volume, time, sets, and muscle coverage • Workout history, exercise stats, and exercise history • Body measurements and progress trends • Coach tools for client sessions, templates, history, progress, and notes MuscleLab is not a social fitness feed or a calorie tracker. It is a clear training log for people who want the next workout to be easier to start and easier to understand afterward. Log workouts. Repeat what works. See progress.
CurlBro
This strength-training app allows users to build, run, and log detailed workout sessions. It features an offline-first design with no account or subscription required, focusing on a clean tool for experienced lifters.
- Drag-to-reorder workout builder
- Superset grouping
- Built-in workout templates
- Per-set logging
- Rest timer with Live Activity
- Full workout history
- Share/import workouts as text
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Build a workout that fits your day, track every set, and see the work add up. CurlBro keeps planning, tracking, rest, and review in one place. Start with a built-in workout, make your own, or get a little help choosing what comes next. TRACK EVERY SET Record reps, weight, time, and distance. Adjust your sets as you go, add notes, and keep a clear record of what you actually did. TAKE YOUR REST Rest is part of the plan. Your timer can start automatically between working sets and superset rounds. Adjust it as you go, or keep an eye on it from the Lock Screen and Dynamic Island with Live Activities on supported iPhones. SEE THE WORK ADD UP Finish with a session summary, then explore your workout history, training volume, and exercise progress. Check what you lifted last time and how your training has changed over time. BUILD YOUR KIND OF WORKOUT Choose exercises, set reps and rest, arrange supersets, and save workouts to use again. Or let CurlBro put a session together around your time, equipment, and preferences, then make it your own. GET A LITTLE HELP WITH WHAT'S NEXT Find exercise suggestions based on the workout you're building. Explore additions, superset pairings, and alternatives when you want to change a movement. MAKE IT YOURS Create custom exercises, share your workouts, and import routines shared from CurlBro. You can also save completed strength workouts to Apple Health. You bring the effort. CurlBro keeps the details.
Screenshots
Verdict
MuscleLab and CurlBro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MuscleLab ships an update weekly, CurlBro every 11 days. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.
| Parameter | MuscleLab | CurlBro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Weekly — better | Every 11 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 29 MB |
| Age rating | 12+ | 4+ |
| Developer | Ilya Valasiuk | SIMONE LONGO |
In-app purchases
MuscleLab
No in-app purchases
CurlBro
No in-app purchases









