250+ iOS apps curated and reviewed
Finding the right free sleep calculator apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (76) | No | No | Sep 2026 | |
| 2 |  | Free | 3.7★ (22) | No | No | May 2026 | |
| 3 |  | Free | 4.8★ (31) | No | No | Oct 2026 | |
| 4 |  | Free | 4.7★ (19) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.7★ (30K) | No | Yes | Oct 2026 | |
| 6 |  | Free | — | No | No | May 2026 | |
| 7 |  | Free | — | Yes | No | May 2026 | |
| 8 |  | Free | 5.0★ (1) | No | Yes | Oct 2026 |
This app helps you determine the optimal times to go to sleep and wake up to align with your natural 90-minute sleep cycles. It calculates ideal bedtime based on your desired wake-up time and vice-versa, promoting a more rested feeling upon waking. It also includes features for tracking sleep phases and a smart alarm to wake you gently.
This free utility helps you determine optimal wake-up times based on sleep cycles. It aims to reduce grogginess by recommending times to rise at the end of a sleep cycle, promoting a more alert feeling.
This utility helps you determine the ideal times to sleep or wake up by calculating based on natural 90-minute sleep cycles. It aims to help users feel more refreshed and energized by waking them between these cycles.
