This app generates random intervals for timers, useful for gaming or sleep. It features background operation and a shake-to-set functionality for ease of use. The interface is designed to be simple and visually appealing.





250+ iOS apps curated and reviewed
Kairos is the household name in random timer reaction, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | Free | 1.8★ (15) | No | No | May 2026 | ||
| 3 | Free | 3.5★ (30) | No | Yes | Aug 2026 | ||
| 4 | Free | 4.4★ (1.2K) | Yes | No | Oct 2026 | ||
| 5 | Free | 3.2★ (10) | No | No | Sep 2026 | ||
| 6 | Free | 1.7★ (17) | No | No | May 2026 | ||
| 7 | Free | 4.3★ (170) | No | Yes | Aug 2026 | ||
| 8 | Free | — | No | No | May 2026 |








This app generates random intervals for timers, useful for gaming or sleep. It features background operation and a shake-to-set functionality for ease of use. The interface is designed to be simple and visually appealing.






This app adds unpredictability to routines with a customizable repeat timer. It enhances workouts, games, and daily tasks by introducing dynamic intervals and decision-making challenges. Enjoy a sleek design for seamless navigation and visual timing.