30 Day Sit Up Challenge! vs RepKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
30 Day Sit Up Challenge!
This app helps you track your progress through a 30-day sit-up challenge. It counts your sit-ups daily, manages your achievements, and sends notifications to keep you motivated. It also integrates with Apple Health to record your active energy and workouts.
- Daily sit-up counting
- Achievement day management
- Push notifications
- Apple Health integration
- Active energy calculation
- Workout recording
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Supports Sit Up for 30 day challenge. Main function is to count Sit Up once a day. Main Function ・Count Sit Up. ・Achievement days management. ・Notifications. ・Record Active Energy and Workouts to Apple Health. How to use ・Put iPhone on your abdominal. ・Tap Screen. ・Hold iPhone with both hands. ・Start Sit Up. Active Energy ・Ex. METs 3.8, Weight 50 kg, Time 10 min. (3.8 - 1) x 50 x (10 / 60) x 1.05 = 24.5 kcal. Optional permission requests ・Apple Health: It is used to record data in Apple Health. ・Tracking: It is used to deliver personalized ads to you. ・Notifications: It is used to sending notifications. Languages ・Japanese, English.
RepKey
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Lock your apps. Unlock with reps. RepKey blocks distracting apps on your phone until you complete a quick daily workout. No willpower needed — just move your body and earn your screen time back. HOW IT WORKS 1. Set your daily lock schedule 2. When locked, complete your workout 3. AI counts your reps using your camera 4. Apps unlock automatically when you're done FEATURES • AI-powered rep counting — push-ups, squats, sit-ups, lunges, and plank • Customizable lock schedule — choose when apps get blocked • Real-time pose detection — no wearables needed, just your camera • Workout history and streak tracking • Mood check-ins before and after workouts PRIVACY FIRST • Camera data is processed entirely on-device • No photos or videos are ever saved or uploaded • All workout data stays on your phone PREMIUM • Customize your exercise type and lock schedule • Full workout history and statistics • 7-day free trial included Terms of Service: https://replock-app.github.io/terms.html Privacy Policy: https://replock-app.github.io/privacy-policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: 30 Day Sit Up Challenge! at none against RepKey's 3. RepKey's advantage is ads (none vs shown). On price, device support and iOS requirement 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. RepKey sells 3 in-app purchases, starting at $4.99 per 7 days. 30 Day Sit Up Challenge! asks for nothing beyond the download.
| Parameter | 30 Day Sit Up Challenge! | RepKey |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (35 ratings) — better | — |
| Positive reviews | 72.2% of reviews | — |
| Number of ratings | 35 — better | — |
| Update frequency | Every 3 months | — |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Intersect | Koya Nambo |
In-app purchases
30 Day Sit Up Challenge!
No in-app purchases
RepKey
- Weekly7 Days trial$4.997 Days
- Monthly7 Days trial$14.991 Month
- Yearly$39.991 Year
Questions
Is 30 Day Sit Up Challenge! free?
Is RepKey free?
Do 30 Day Sit Up Challenge! or RepKey have ads?
Other comparisons
