An Android app designed to tell you when to go to bed and get up can be a powerful tool for improving the quality of your sleep and, consequently, your overall health. These apps use various methods to determine the optimal times to sleep and wake up, based on scientific principles of the sleep cycle.

Main Features
Smart Alarms:
These apps often include smart alarms that wake you up in the light sleep phase, making waking up more natural and less abrupt. This is based on monitoring your movements and sleeping patterns using the phone's sensors.

Bedtime Reminders:
A crucial feature is the bedtime reminder, which notifies you when is the best time to start your sleep routine. This may include personalized recommendations based on your previous sleep habits.

Sleep Tracking:
Most of these apps have sleep tracking, recording the different phases of your sleep throughout the night. They use the phone's accelerometer to detect movements and estimate whether you are in light, deep or REM sleep.

Dream Analysis:
They offer detailed analyzes on the quality of your sleep, duration of each phase and sleep efficiency. Some apps also compare your data to recommended averages to give you a clear picture of how to improve your sleep.

Personalized Recommendations:
Based on the analysis of your sleep patterns, these apps can offer you personalized recommendations, such as adjustments to your sleep schedule, tips on sleep hygiene, and suggestions on how to improve your bedroom environment.

Integration with Other Apps and Devices:
Many of these apps integrate with other health devices and apps, such as fitness trackers, smartwatches, and health tracking apps, to provide a more complete view of your overall well-being.