HeavyMuscle vs Sweatline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HeavyMuscle
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Most gym apps just record what you already did. HeavyMuscle is the workout tracker & gym log that tells you what to do next — and does the thinking for you. An AI coach in two modes builds your weight lifting plan from a single sentence and reshapes each session around your injuries, equipment and recovery. Before you touch the bar, it shows the plates to load, generates your warm-up sets and pre-fills every set with your last numbers. Automatic PR detection and an estimated-1RM curve tell you the moment you get stronger. 873 animated exercises, a real rest timer and a recovery body map, in 6 languages. Create unlimited routines, log unlimited workouts, all offline from the first second. AI COACH • Two modes: Conversation for questions and adjustments, and Builder to generate a full workout plan from scratch. • Generates a full workout from a single sentence ("30 min chest workout without barbell"). • Snap a photo of a gym machine and it finds the matching exercise. • Adapts today's training to your injuries, available equipment and experience level. • Reviews your last session or the full week and gives objective feedback. WORKOUT LOG • Every set pre-filled with your last weight and reps — your previous numbers are right there at the rack. • Plate calculator: see exactly which plates to load per side, for barbells and dumbbells. • Time-based exercises: cardio, planks and circuits (AMRAP / for time) with a built-in timer. • Warm-up sets generated automatically, ramped to your working weight. • Rest timer with 3-2-1 beeps, vibration and a screen that stays on. • Warmup, drop-set, failure and cluster sets, plus supersets. • Quick Start, unlimited workout templates and retroactive logging. • Share a session as a post-ready image card (volume, sets, muscles). EFFORT & PROGRESSION (RPE/RIR) • Rate how hard each set felt — RPE or reps in reserve, one tap after the set. • Next time, the workout planner suggests the weight: up when it felt easy, down when it was a grind — always weights you can actually load. PROGRESS & RECORDS • Automatic PR detection with a record badge the moment you beat a best. • Estimated-1RM curve per exercise to see your strength trending over time. • Progress photos: capture, import and compare with a before/after slider. EXERCISE LIBRARY • 873 exercises with animated demonstrations, target muscles, equipment and difficulty. • Mark favourite and avoided exercises — the AI Coach factors them in. HISTORY & ANALYTICS • Recovery body map (front/back): see what's fatigued, recovering or ready to train. • Weekly volume per muscle as a body heatmap or ranked chart, with low/optimal/high zones. FULL PROFILE • Body measurements with dated history and goals — set a target and watch the gap close. • Water tracking: daily hydration goal, one-tap logging and reminders. • 10 injury zones with automatic exercise filtering. • Builder that respects your equipment, goal and experience level. APPLE WATCH • Your workout mirrors to your wrist — check off each set with a tap, pre-filled with your last numbers. • Adjust weight and reps with the Digital Crown; rest counts down with 3-2-1 haptics. • Live heart rate and calories, with a summary when you finish. Requires a paired iPhone. PRIVACY & OFFLINE • Works fully offline in anonymous mode: nothing leaves your phone until you sign in. • Optional Apple, Google or e-mail login syncs your gym log to the cloud. LANGUAGES • English, Portuguese (BR), Spanish, German, French and Italian. Whether you train for bodybuilding, powerlifting, strength training or hypertrophy, HeavyMuscle is the gym tracker that turns effort into progress. Privacy and subscription terms: https://heavymuscle.app/privacy/#subscription Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Sweatline
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Sweatline is a personal trainer that fits in your pocket. Answer three questions and it builds you a weekly gym plan. Then it walks you through every session, set by set, and keeps track of how strong you are getting. Everything works offline. There is no account, no server, and nothing leaves your phone unless you choose to share it. A PLAN BUILT FOR YOU Tell Sweatline your goal, your experience, and how many days a week you can train. It picks a proven split: full body, push/pull/legs, upper/lower, or PPL twice a week. Big lifts come first, with warm-up sets, heavier loads, and longer rests. Smaller lifts come after, with higher reps. Holds like the plank are prescribed in seconds. If your goal needs cardio, the plan says how much and when. GUIDED WORKOUTS One exercise at a time. Sweatline shows the target weight from your last session, you save each set, and a rest timer counts you down with a buzz when it is time to lift again. Barbell lifts show you which plates to put on each side of the bar. The screen stays awake. If you close the app in the middle of a workout, you can pick up exactly where you left off. PROGRESSION THAT KNOWS WHEN TO BACK OFF Beat last session by one rep, then add weight. If a lift stalls three sessions in a row, Sweatline drops the weight to give you a run at it again, rounded to something the gym can actually load. BEAT YOUR BEST Match your top weight for an extra rep, or add weight, and the set earns a trophy on the spot and again on your summary. Every exercise keeps its all-time best. MAKE THE PLAN YOURS Machine taken? Replace any move with a similar one that trains the same muscles and fills the same role, just for today or saved to your plan. Drag to reorder a day. Edit sets, rep range, and rest per exercise. Keep a note on any exercise, like a seat height or a grip, and it shows up while you train. 63 EXERCISES, EXPLAINED Every exercise has an animated figure that shows the movement, a muscle map of what it works, step-by-step instructions, and form cues from a trainer. The language is plain. No gym jargon you have to look up. SEE YOUR PROGRESS Weekly and lifetime stats, a streak counting the weeks you have trained, a strength trend for every exercise, your body weight over time, and your full session history. A NUDGE WHEN YOU NEED ONE Set a daily reminder at the time that suits you. It is scheduled on your phone, so it works with no connection at all. YOUR DATA IS YOURS Sweatline stores everything in a database on your device. It has no internet permission, so it cannot send your data anywhere on its own. Copy a backup to your clipboard, or save it as a file, whenever you want. Share a workout summary as an image only if you feel like it. Sweatline is not medical advice. Ask a doctor before you start a new training plan.
Screenshots
Verdict
The clearest difference is in-app purchases: Sweatline at none against HeavyMuscle's 3. Sweatline also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). On price, update cadence and device support there is nothing between them.
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. HeavyMuscle sells 3 in-app purchases, starting at $3.99 per month. Sweatline asks for nothing beyond the download.
HeavyMuscle ships an update every 5 days, Sweatline weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | HeavyMuscle | Sweatline |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 89 MB | 20 MB |
| Age rating | 4+ | 17+ |
| Developer | Flavio Lima | Rashad Ansari |
In-app purchases
HeavyMuscle
- HeavyMuscle Pro Monthly3 Days trial$3.991 Month
- HeavyMuscle Annual Pro7 Days trial$22.991 Year
- HeavyMuscle Pro Lifetime$79.99
Sweatline
No in-app purchases









