RPE 8 (slowdown tracker)
德凯 郝 Health & Fitness iPhoneiPadiPod touchApple Watch
RPE 8 (slowdown tracker) is a free Health & Fitness app for iPhone and iPad by 德凯 郝. Requires iOS 15.6. Updated October 18, 2026.
- Price
- Free
- on the App Store
- Size
- 1 MB
- Age 4+
- Updated
- Oct 18
- 2026 · v1.14
About RPE 8 (slowdown tracker)
Slowdowns in free tier. Works best in 4-20 repetition range and under a minute of time under tension. Limitations: Does not track well true grinder reps. Slower than 20 mm/s. Reps with a pause mid rep are not tracked. Free tier displays slowdowns. The number turns red when the slowdown is likely above RPE 8 for that repetition range. Paid tier displays repetition velocity. Does not collect or send any of your data, all local processing.
What’s new
Version 1.14 · Updated October 18, 2026
Added stopwatch since last set. Tweaked UI and tracking.
App privacy
The developer, 德凯 郝, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to RPE 8 (slowdown tracker)
Looking for apps like RPE 8 (slowdown tracker)? Here are 6 similar apps on the App Store. The highest rated is Gainmo: Beat Your Last Lift (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| RPE 8 (slowdown tracker) | – | Free | October 18, 2026 | |
| Gainmo: Beat Your Last Lift | 5.0 / 5 (12) | Free | Oct 10, 2026 | Compare |
| FormGuru | – | Free | Nov 19, 2024 | Compare |
| Fitomics | 5.0 / 5 (7) | Free | Oct 20, 2026 | Compare |
| Social Project | – | Free | Jan 28, 2025 | Compare |
| RepOne Personal | 3.6 / 5 (16) | Free | May 31, 2026 | Compare |
| Strongineering Workout Planner | 4.9 / 5 (48) | Free | Jul 16, 2026 | Compare |