SleepRoute - Scientific Alarm

Sleep Route works out when to set your alarm so it goes off at the end of a sleep cycle instead of the middle of one.

WHY WAKE TIME MATTERS
Sleep runs in cycles of roughly 90 minutes. In each one the brain moves from light sleep down into slow-wave sleep and back up through REM, the stage where most dreaming happens. Most people go through four to six of these cycles in a seven to nine hour night. An alarm that fires deep inside a cycle leaves you groggy, while one placed near the top of a cycle is far easier to wake from. sleepRoute does that arithmetic for you.

THREE WAYS TO SET IT
Sleep now — tap once and see the best wake times if you fall asleep from this moment, including a 25 minute power nap.
I sleep at — enter your bedtime and get every wake time that completes a full cycle.
I wake at — enter the alarm you already have and see when you should be asleep by.

Each suggestion shows the total sleep length and the number of cycles, with the strongest options marked BEST, so you can pick the one that fits your morning.

SLEEP TRACKING
See your nightly average and sleep quality for the current week at a glance, week-by-week bars, and a full history of every week you have tracked.

FEATURES
✅ Automatic alarm calculator based on the current time
✅ Custom calculation from a bedtime or a wake-up time
✅ 25 minute and 10 minute nap alarms
✅ Best wake times marked for you
✅ Weekly sleep quality and average sleep duration
✅ Full tracking history
✅ Rotating facts about sleep
✅ One tap access to the system clock app to manage all your alarms
✅ Clean dark design built for late-night use
✅ Material You themed icon on Android 13 and above

Sleep cycle length varies between people and from night to night, so the times are well-founded estimates rather than measurements. sleepRoute is not a medical device and does not diagnose or treat any condition.

Found a bug or have an idea? Get in touch and I will do my best to fix it quickly.

Recent changes:
New look throughout, built around a dark, low-glare night theme
- New app icon, with a Material You themed version on Android 13+
- Sleep now, I sleep at and I wake at split into three clear tabs
- Best wake times now marked on each suggestion
- New weekly view with sleep quality, nightly average and full history
- Faster access to the system alarm list
- Various fixes and performance improvements