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★ (75) | No | No | Aug 2026 |
| 2 |  | Free | 3.7★ (22) | No | No | May 2026 |
| 3 |  | Free | 5.0★ (14) | No | No | Aug 2026 |
| 4 |  | Free | 4.7★ (28K) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.7★ (19) | No | No | Jul 2026 |
| 6 |  | Free | — | Yes | No | May 2026 |
| 7 |  | Free | 4.9★ (13) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.4★ (96K) | No | Yes | Aug 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.
This app uses sound analysis to track sleep patterns, identify potential issues, and build healthier sleep routines. It features an AI sleep coach, a smart alarm to wake you gently, and tools to record snoring and sleep talking.
Calculate expected daily yields for ingredients and berries. Determine the amount of candies and shards required for leveling up. Streamline resource management for your game.
This app helps you determine optimal sleep and wake times to feel more rested. It calculates ideal bedtimes based on your desired sleep duration and natural sleep cycles.
This app helps you understand and improve your sleep. It automatically tracks your sleep cycles, analyzes heart rate, and records audio events like snoring. Get personalized insights and tips to wake up feeling refreshed.
Optimize your sleep and wake up feeling refreshed with this science-based sleep optimizer. It calculates ideal bedtimes and wake-up windows based on your sleep cycles, featuring a smart alarm and detailed sleep tracking.
Optimize your sleep schedule by aligning with natural 90-minute sleep cycles. This app provides recommended times to fall asleep and wake up, helping you feel more rested and energized. It also offers calming sleep sounds and smart reminders to ensure you don't miss your ideal sleep windows.
This app helps you improve sleep and energy levels by tracking sleep debt and circadian rhythms. It offers personalized recommendations, guided meditations, and smart alarms based on sleep science.