Comparison

GymHack vs Let's Workout

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GymHack

This app helps you track your weightlifting workouts and provides AI-driven insights into your recovery and readiness. It allows for extensive customization of exercises and gym equipment, with a focus on personalized training analysis. Features include progress charts, periodization, and readiness checks.

Highlights
  • AI-driven workout analysis
  • Customizable exercises and machines
  • Recovery and readiness tracking
  • Personalized training load insights
  • Progress charts and PR history
  • Weekly plan generation
  • Apple Watch integration
Features
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TRAINING THAT KNOWS WHEN YOU'RE COOKED A workout log records what you did. GymHack reads what it's doing to you. NO ACCOUNT. EVER. Open the app and train. No email, no signup wall, no "create an account to continue." Your data lives on your device, backed up to your own iCloud. BUILT FOR YOUR GYM, NOT A GENERIC ONE Every gym is different. Yours has that one plate-loaded machine nobody else stocks, or a cable setup with its own quirks. GymHack lets you add your own exercises and your own machines — name them, photograph them, tell the app what they count as, and train with them like any built-in movement. And your AI Coach — a PRO feature, currently in beta — knows about them. Ask it to build a session around what your gym actually has, and it programs with your custom machines and exercises — not a stock library that pretends every gym is identical. FREE, AND ACTUALLY FREE • Unlimited workouts, sets, supersets and rest timers • 430+ exercises with images, cues and muscle maps • Per-set RPE, drop sets, warm-up sets, failure sets • Add 5 custom exercises and 2 custom machines • Build weekly plans, or generate one automatically • Periodization phases that coach you mid-workout • Progress charts for every exercise — volume, max weight, estimated 1RM, PR history • Guided 1RM testing • Cardio and HIIT — add a smartwatch for 5-zone heart-rate training • A 53-badge collection to chase • Pre-workout readiness check before every session • Free iCloud backup of your workout history and body stats ON YOUR WRIST — THE WHOLE APP, FREE Run entire workouts from your wrist. Heart rate, calories, Activity rings, PR haptics, complications, Siri shortcuts, offline queue, Handoff to iPhone. No subscription. PRO — SEE WHAT TRAINING IS DOING TO YOU Logging tells you what you lifted. PRO tells you what it cost. • Your whole gym — up to 200 custom exercises and 50 custom machines • AI Coach that programs around your equipment and your history — runs privately on iPhones with Apple Intelligence (beta) • Recovery and readiness — which muscles are ready, which need rest • Training load — acute, cumulative and systemic fatigue, including CNS overreaching • Muscle profile — 16 muscles tracked with personalized volume targets • Strength progress — every muscle, over time, with full analysis • Left/right asymmetry detection • Weight, body-fat, calorie and heart-rate trends with plateau detection • Nutrition targets that flex on training vs rest days Try PRO free for 14 days. Cancel anytime. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://gymhack.ai/privacy

About

Let's Workout

Features
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The gym tracker that tells you the next weight — with a free AI Coach and no sign-up. Let's Workout is a workout log built for the middle of a set: big buttons, last session's numbers on screen, and a straight answer to "what do I lift today?". Logging works offline, and you never need an account. WHY THIS ONE • It tells you the next weight. Tap the weight on a set and it suggests the load: hit all your reps last time and it says go up; fall short and it says hold. • A free AI Coach, no sign-up. Ask about a lift or your week, get a recap after each workout and a weekly note, and build or improve a routine in seconds. Free within daily limits. Loads come from the app's rules; the AI never picks one on its own. • Genuinely offline. Logging, history, charts, plans and the written guides work with no signal. The AI Coach needs a connection. • Your data, your rules. Free CSV export, import from Hevy or Strong, and one tap to delete your data or your account. FAST WORKOUT LOGGING • Big buttons, a custom number pad and smart weight/reps prefills • Last session's numbers (PREVIOUS) on every set — beat them, tap, done • Log a set by voice: say "Bench press, 80 kilos, 10" and check it before saving • Optional voice coach: spoken rest cues with a 3-2-1 countdown • Warm-up, drop and failure sets, plus a one-tap warm-up generator • Auto rest timer with per-exercise overrides and a live notification • Plate calculator, supersets, reordering, notes and "repeat workout" • Cardio too: log time and distance AI COACH — OPTIONAL AND FREE • Ask the coach: "How is my bench press going?" or "Which lifts are stalled?" • A recap after every workout and a coach's note on your week • Build my program: answer a few questions — quick mode offline, or with AI • Improve a routine and see why each alternative fits when you swap an exercise • Physique check: from a front photo (and a back one if you like), see on your muscle map which muscles could use more training, with weekly set targets you review before anything changes. Separate consent, 18+. SEE YOURSELF GETTING STRONGER • Estimated 1RM, volume and consistency charts per exercise • Personal records tracked automatically, with a trophy the moment you beat one • Muscle heat map, body weight trend and monthly history stats 1,100+ EXERCISES WITH DEMOS AND GUIDES • Animated demos and anatomy diagrams of the muscles worked • A written guide for every exercise: setup, how-to, common mistakes, safety • Search by name, muscle or equipment; add your own exercises WORKOUT PLANS AND HABIT • Ready-made routines: ABC split, hypertrophy, 5×5 strength, glutes, calisthenics and more • Plan your week by weekday or as a rotation • Weekly goal with streaks, achievements and a weekly recap • Share a workout card or a routine your training partner can open and save APPLE WATCH AND APPLE HEALTH • Start today's routine, log sets and follow the rest ring on Apple Watch; cardio sets record time and distance • Rest timer on the Lock Screen as a Live Activity, with +15s and Skip (iOS 17 or later) • Optional Apple Health sync for finished workouts and body weight Let's Workout is free: logging, library, charts, plans and CSV export. The AI Coach is free within daily limits. Not a medical device: it does not diagnose, treat, cure or prevent any condition. AI Coach answers are general fitness information, not medical advice. Consult a healthcare professional for medical advice. Train. Track. Evolve.

Screenshots

GymHack4 screens
Let's Workout4 screens

Verdict

The call

The clearest difference is in-app purchases: Let's Workout at none against GymHack's 2. Let's Workout also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.0 vs 18.0). GymHack's advantage is ads (none vs shown). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. GymHack sells 2 in-app purchases, starting at $9.99 per month. Let's Workout asks for nothing beyond the download.

UpkeepUpdate frequency

GymHack ships an update every 3 weeks, Let's Workout every 2 days. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 5 level
GymHack versus Let's Workout: the parameters behind the verdict, then further details
ParameterGymHackLet's Workout
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS18.015.0 — better
Further details — not scored
Size227 MB109 MB
Age rating4+4+
DeveloperPrioton LLCOlivio Waldemar Becker Neto

In-app purchases

2 purchases

GymHack

Subscriptions2
  • Monthly14 Days trial$9.991 Month
  • Yearly14 Days trial$69.991 Year
None

Let's Workout

No in-app purchases

Questions

Is GymHack free?
GymHack is free to download, with in-app purchases available.
Is Let's Workout free?
Let's Workout is free to download, with no in-app purchases.
Do GymHack or Let's Workout have ads?
Let's Workout shows ads; GymHack does not.
Which is updated more often, GymHack or Let's Workout?
GymHack ships an update every 3 weeks, and Let's Workout every 2 days. Most recently, GymHack was updated on October 22, 2026 and Let's Workout on October 15, 2026.

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