Sleep Cycle Calculator
pentarab Lifestyle In-app purchases Contains ads
Find the best bedtime or wake-up time using 90-minute sleep cycles.
- Downloads
- 10+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 14
- 2026 · v1.0.0
Screenshots
About Sleep Cycle Calculator
Sleep Cycle Calculator helps you wake up refreshed by timing your sleep around 90-minute sleep cycles. Pick a wake-up time to see the best bedtimes, or tap "sleep now" to see the best times to wake up — each suggestion shows the cycle count and hours of sleep.
FEATURES
• Wake-up planner: choose a wake time, get 4 suggested bedtimes (6, 5, 4 and 3 cycles)
• Sleep-now planner: get 4 suggested wake-up times if you fall asleep now
• Every card shows the number of sleep cycles and total hours of sleep
• Adjustable fall-asleep buffer (default 15 minutes)
• Clean, simple card layout with a 12/24-hour time picker
• No accounts, no tracking, no permissions
Works offline — nothing is recorded or sent anywhere.
This is a simple calculator based on the common 90-minute sleep-cycle estimate. It is not medical advice.
Remove ads anytime with a one-time in-app purchase.
FEATURES
• Wake-up planner: choose a wake time, get 4 suggested bedtimes (6, 5, 4 and 3 cycles)
• Sleep-now planner: get 4 suggested wake-up times if you fall asleep now
• Every card shows the number of sleep cycles and total hours of sleep
• Adjustable fall-asleep buffer (default 15 minutes)
• Clean, simple card layout with a 12/24-hour time picker
• No accounts, no tracking, no permissions
Works offline — nothing is recorded or sent anywhere.
This is a simple calculator based on the common 90-minute sleep-cycle estimate. It is not medical advice.
Remove ads anytime with a one-time in-app purchase.
What’s new
Version 1.0.0 · Updated September 14, 2026
Initial release.
Alternatives to Sleep Cycle Calculator
Looking for apps like Sleep Cycle Calculator? Here are 6 similar Android apps on Google Play. All of them are free to download.
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Korio: Korean & TOPIK Grammar
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Sleep Cycle Calculator | – | Free | 10+ | Sep 14, 2026 | |
| Korio: Korean & TOPIK Grammar | – | Free | 1+ | Sep 19, 2026 | Compare |
| Artoon: AI Art & Anime Filter | – | Free | 1+ | Sep 15, 2026 | Compare |
| StickerForm: Sticker Maker | – | Free | 10+ | Sep 11, 2026 | Compare |
| Gwansang: Face Reading | – | Free | 1+ | Sep 15, 2026 | Compare |
| Wobble: Jelly Photo Effect | – | Free | 10+ | Sep 15, 2026 | Compare |
| 1% Habit: 15 Min Day Tiles | – | Free | 1+ | Sep 15, 2026 | Compare |
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