RepZero vs SetBySet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RepZero
Track your gym progress with an intuitive workout logger that focuses on showing you real strength gains. Log sets quickly, monitor personal records live, and receive guidance on your next training steps. Integrates seamlessly with Apple Watch for a phone-free experience.
- Intuitive set logging with rest timers
- Live personal record updates
- Apple Watch integration
- Progress visualization and trends
- Muscle recovery insights
- Customizable workout routines
- AI-driven training recommendations
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RepZero is a weight lifting log and gym workout tracker for iPhone and Apple Watch. Log every set in seconds, see your records the moment you break them, and always know what to train next. It's built for people who want to know they're getting stronger, not just hope they are. LOGGING THAT KEEPS UP WITH YOU RepZero shows one set at a time: tap your weight and reps, log it, and the rest timer starts on its own. Supersets, drop sets, timed holds and cardio all work the way you'd expect. • Plate calculator: which plates go on each side of a barbell, trap bar, EZ bar or Smith machine • Warm-ups in one tap, ramping up to your first working set • Rest timer on your Lock Screen and in the Dynamic Island, with skip and log buttons • New personal records show up live, mid-workout • Start a workout from a widget, Control Center, Siri or Shortcuts BUILT FOR APPLE WATCH Leave your phone in your bag. Start a workout on your wrist, turn the Digital Crown to set weight and reps, and double tap to log. Heart rate and calories go to Apple Health, and everything syncs back to your iPhone. PROGRAMS THAT MOVE YOU FORWARD Follow a program and RepZero plans every session and raises your weights as you progress. Beginner Strength and Dumbbell Foundations are free. Upper/Lower Hypertrophy, Push/Pull/Legs, Strength Waves and Minimalist come with Pro, and so does building your own program from your routines. AN AI COACH IN YOUR POCKET Ask the AI coach about your training, from what to train today to building a new routine. It runs on device with Apple Intelligence on supported iPhones. SEE YOUR PROGRESS, CLEARLY • Estimated 1RM, PRs and records for every lift • Volume, workout and training-time trends • A weekly goal with streaks that give you credit for rest days • Muscle recovery at a glance • A full history of every workout, as a list or a calendar • Achievements that reward consistency START STRONG, STAY ORGANIZED Use a ready-made routine or build your own in minutes, and share routines and programs with a link. Bring your history from other apps with an AI-assisted import. Back up to iCloud, sync across devices with a free account, and export your data anytime. REPZERO PRO Pro is for lifters who want a plan, not just a log. • Coach: ranked next steps after every workout, like adding sets to a lagging muscle or breaking through a plateau, applied to your routines in one tap • Recovery check: reads last night's sleep, heart rate variability and resting heart rate from Apple Health and suggests going lighter or taking a rest day. Those readings never leave your device. • All six programs, plus programs you build yourself • Lift forecasts, strength levels and muscle balance • Unlimited custom routines (free includes 5) • Body measurements, Lift and Progress widgets, and premium themes • The Gainz Goblin: a pixel-art pet on your Today screen, Watch and Live Activity. Train and he stays fed. Skip too many days and he gets hungry. WHOEVER YOU ARE Chasing your first bodyweight bench, running a powerlifting block or just trying to get to the gym three times a week, RepZero shows you it's working and what to do next. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://darkmatterlabs.app/privacy
SetBySet
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SetBySet is a focused strength training tracker built for lifters who want to log workouts quickly and effectively. WORKOUT TEMPLATES Create custom workout templates with your favorite exercises. Choose from a built-in exercise library or add your own. Set target reps, time-based goals (for planks, carries, etc.), or train to failure. Customize rest times between sets and exercises. Duplicate templates to create variations fast. Tap any exercise to edit sets, reps, target type, and rest times. TRACK EVERY SET During a workout, log weight, reps, or duration for each set. A built-in rest timer keeps you on pace with customizable rest periods per exercise. APPLE WATCH Sync your templates to Apple Watch and run workouts from your wrist. Adjust weight with the Digital Crown, log sets with a tap, and get haptic alerts when rest is over. Completed workouts sync back to your iPhone and save to Apple Health automatically. PROGRESS & HISTORY View your full workout history with detailed stats. Track body weight over time. See your estimated one-rep max and how your lifts are progressing. Get notified when you hit a new personal record. BUILT-IN TOOLS - Plate Calculator with visual barbell display - One Rep Max calculator with training zone guide - Body Weight tracker with trend charts - Rest timer with background notifications - Workout sharing as text or image cards APPLE ECOSYSTEM - Apple Watch companion with full workout logging - Lock Screen Live Activity during workouts - Home Screen widget showing your streak - Apple Health integration (workouts, heart rate, body weight) - iCloud sync across all your devices EXPORT & BACKUP Export all your data as JSON. Import it back anytime. Your training history is always yours. SETBYSET PRO Upgrade once to unlock unlimited workout templates, progress charts, data export, iCloud sync, and Apple Watch support. No subscriptions — pay once, own it forever. SetBySet is private and built for lifters. No accounts required. Just you and the iron.
Screenshots
Verdict
The clearest difference is update cadence: SetBySet at every 2 days against RepZero's fortnightly. On price, ads, in-app purchases 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. RepZero sells 2 in-app purchases, starting at $1.99 per month and SetBySet sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
RepZero ships an update fortnightly, SetBySet every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | RepZero | SetBySet |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 144 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Dark Matter AI Labs LLC | PragmaTec |
In-app purchases
RepZero
- RepZero Pro Monthly14 Days trial$1.991 Month
- RepZero Pro Yearly14 Days trial$19.991 Year
SetBySet
- SetBySet Pro$5.99









