250+ iOS apps curated and reviewed
The best interval running free apps on iPhone average 4.8★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (1K) | No | Yes | Sep 2026 | |
| 2 |  | Free | 4.8★ (5) | No | No | Sep 2026 | |
| 3 |  | Free | 4.5★ (19K) | Yes | Yes | Oct 2026 | |
| 4 |  | Free | 4.8★ (14K) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.8★ (418K) | Yes | No | Oct 2026 | |
| 6 |  | Free | 4.9★ (5.4K) | Yes | Yes | Oct 2026 | |
| 7 |  | Free | 4.8★ (86K) | No | Yes | Oct 2026 | |
| 8 |  | Free | 4.7★ (3.5K) | No | Yes | Oct 2026 |
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.
This app helps you structure your workouts with customizable interval timers. Set work and rest periods, and repeat cycles for your training sessions.
This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.
