Somnus is a popular free alarm clock app in Japan that allows you to measure and improve your sleep quality with your smartphone. The app can be downloaded from the Google Play store.

It is designed to work on Android devices, and the latest version is compatible with Android 8.0 and above.

It is recommended for people like you who have trouble going to sleep. It is designed to help you wake up feeling refreshed.

How to use the app

To start using Somnus, you need to download the app from the Google Play store. You will be guided through the installation process. After the installation is complete, launch the app and tap the "Home"-"Add Alarm" button to set your favorite alarm.