RepFit.ai: AI Workout Tracker
Bill Kim Health & Fitness iPhoneiPadiPod touch
RepFit.ai: AI Workout Tracker is a free Health & Fitness app for iPhone and iPad by Bill Kim. Requires iOS 17.0. Updated October 14, 2026.
- Price
- Free
- on the App Store
- Size
- 5 MB
- Age 4+
- Updated
- Oct 14
- 2026 · v1.3.0
Screenshots
About RepFit.ai: AI Workout Tracker
Started lifting but not sure how much weight or how many sets to do? RepFit.ai is your AI strength-training partner that designs your workouts around your level and goals — and coaches your progress every week. ■ AI recommendations for your exact level - 6-tier level assessment, from beginner to advanced - Auto-suggests starting weight, sets and reps per exercise - Learns from every session to adjust your next target ■ Logging that takes one second - Intuitive weight × reps set cards - Rest timer with a finish chime to keep your tempo - Build routines and repeat any past workout instantly ■ A weekly AI coaching report - Verdict, top achievement, what's stalling, next-week plan - Every number is computed only from your own logs — no fluff - Full Korean & English support ■ Progress you can actually see - Track estimated 1RM (max strength), volume, and personal records - Filter by 1 / 4 / 12 weeks or a custom date range - Muscle balance and a weekly calendar to stay consistent ■ Share-worthy progress cards - Dynamic cards that shift color with your level and workload - Save and share workout & weekly-growth cards to social ■ Safe sync across devices - Sign in with Apple to sync in real time - Your records, safely backed up Turn vague effort into real, measurable strength with RepFit.ai. — RepFit.ai Pro Unlocks weekly AI coaching, full growth analytics, level-based programming, ad removal and all features. New subscribers get a 7-day free trial. The subscription auto-renews monthly unless canceled at least 24 hours before the current period ends. Payment is charged to your Apple ID and can be managed or canceled anytime in App Store settings. * This app is not a medical device; recommendations and coaching are for reference only. Check your health before exercising. Terms of Service and Privacy Policy are available in-app and at the links below. EULA : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Version 1.3.0 · Updated October 14, 2026
Now the coach shows its work. ■ Why this weight — tap the suggested load to see the chain: "Last bench 60kg × 12 → cleared the top of the range → +2.5kg." Every number comes from a set you logged. ■ How's today — Good / Normal / Rough. One tap adjusts the remaining sets, so a bad night's sleep doesn't mean arguing with your coach. ■ Rest timer on the Lock Screen — it keeps running once the phone is back in your pocket, and carries the next set's weight and reps, so there's nothing to open between sets. ■ Home Screen widget — your streak and this week at a glance. ■ Apple Health — finished workouts are saved to Health automatically. ■ 4-week plan — accumulation → intensification → peak → deload, with today's session built in one tap. ■ Full Dynamic Type and VoiceOver support. "Start my workout" with Siri. ■ Annual plan added — ₩6,600/month or ₩33,000/year (save 58%). ■ Stall fix — the app promised a deload and then didn't apply it next session. Fixed. The step back happens once, then the weight climbs again.
App privacy
The developer, Bill Kim, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: User ID, Device ID
- Usage Data: Advertising Data
Used for: Third-Party Advertising, App Functionality
Alternatives to RepFit.ai: AI Workout Tracker
Looking for apps like RepFit.ai: AI Workout Tracker? Here are 6 similar apps on the App Store. The highest rated is Workout Tracker - SimpleSplit (5.0/5), and all 6 are free to download.
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RepMark: Gym Workout Log
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Hypertrophy Pal: Gym&Food logs
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Mealory: AI Calorie Counter
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MuscleTrackr
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Workout Tracker - SimpleSplit
5.0
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FitnessLog - Workout Tracker
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| RepFit.ai: AI Workout Tracker | – | Free | October 14, 2026 | |
| RepMark: Gym Workout Log | – | Free | Oct 3, 2026 | Compare |
| Hypertrophy Pal: Gym&Food logs | – | Free | Sep 5, 2025 | Compare |
| Mealory: AI Calorie Counter | – | Free | Aug 31, 2026 | Compare |
| MuscleTrackr | – | Free | Nov 10, 2025 | Compare |
| Workout Tracker - SimpleSplit | 5.0 / 5 (3) | Free | Oct 18, 2026 | Compare |
| FitnessLog - Workout Tracker | 5.0 / 5 (1) | Free | Oct 23, 2026 | Compare |