Create custom running workouts with flexible intervals based on time or distance. Track progress, build training plans, and analyze past runs with detailed results. Your data is private and stored securely on your device or iCloud.




246+ iOS apps curated and reviewed
Every iPhone needs a few good interval running custom apps. We benchmark 246+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | Free | 2.0★ (1) | No | Yes | Aug 2026 | ||
| 3 | Free | 4.7★ (1K) | No | Yes | Sep 2026 | ||
| 4 | Free | 5.0★ (15) | No | Yes | Sep 2026 | ||
| 5 | Free | 4.7★ (123) | No | Yes | Aug 2026 | ||
| 6 | Free | 4.8★ (5) | No | No | Aug 2026 | ||
| 7 | Free | — | No | Yes | Jun 2026 | ||
| 8 | Free | 4.5★ (534) | No | Yes | Sep 2026 |










Create custom running workouts with flexible intervals based on time or distance. Track progress, build training plans, and analyze past runs with detailed results. Your data is private and stored securely on your device or iCloud.






This app simplifies interval and Fartlek running by allowing you to set custom targets for time or distance during hard, easy, and rest efforts. It offers detailed post-run summaries, audio and visual feedback, and an Apple Watch app for enhanced training.