H2O Alarm is a free Android app developed by Ronye Labs in the Lifestyle category. It is a simple yet effective app that reminds you to drink water at regular intervals. All you need to do is enter your weight and the number of times you want to be reminded, and the app will take care of the rest.

One of the unique features of H2O Alarm is its "extra" reminder that wakes your phone to remind you about drinking water, in addition to the standard Android notification. You can also set the start and end time of your day, choose from a variety of ringtones, and enable/disable alarms per weekday. The app offers translations in Portuguese, English, and Spanish.

H2O Alarm also has inspiring images and sounds to motivate you to drink water, and you can set reminders with varied modes such as sound, vibration, notification, and "extra" reminder. The app also highlights the next schedule and allows independent control of alarm volume.

Overall, H2O Alarm is a great app that helps prevent diseases and maintain a beautiful and healthy body. You can buy the PRO version of the app without advertising for a great price.