250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our 4x4 timer interval training list covers 250+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 2.0★ (1) | No | No | Oct 2026 | |
| 2 |  | Free | 4.7★ (32) | No | No | Nov 2026 | |
| 3 |  | Free | 4.9★ (6.4K) | No | Yes | Nov 2026 | |
| 4 |  | Free | 5.0★ (4) | No | No | Oct 2026 | |
| 5 |  | Free | — | Yes | No | Nov 2026 | |
| 6 |  | $0.99 | — | No | No | Aug 2026 | |
| 7 |  | Free | — | Yes | Yes | Oct 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This app provides a simple, distraction-free interval timer for the Norwegian 4x4 training protocol. It guides users through 4 minutes of intense effort followed by 4 minutes of rest, repeated four times, to improve cardiovascular fitness and VO₂ max. The minimal interface ensures focus on the workout.
This app helps you structure your workouts with customizable interval timers. Set work and rest periods, and repeat cycles for your training sessions.
This versatile timer app offers a simple yet powerful way to manage timed activities. Customize multiple intervals with individual colors and sounds, and save them as presets for quick access. It's designed for ease of use and visibility, even from a distance, and works seamlessly in the background.
