Rat Sounds is a free Android app developed by Sound Effects that offers more than 30 realistic rat sounds and ringtones. With this app, users can set the rat sounds as their phone ringtones, alarm clock ringtones, SMS tones, or contact ringtones. The app features real 3D Hi-Fi surround sound effects, and the MP3 files are small in size but have high-quality sound effects.

Users can update the app monthly to get more free rat sounds and ringtones. The app is easy to use, and users can listen to the MP3 music tones by pressing the "Play" button. If they like one of the MP3 music tones, they can set it as their default ringtones, alarm ringtones, notification tones, or contacts ringtones.

Overall, Rat Sounds is an excellent app for those who enjoy realistic animal sounds and want to customize their phone ringtones with unique and fun sounds.