Siren Sounds is a free Android app developed by NTK Apps that offers a collection of various siren sounds as ringtones. The app includes cop siren, ambulance siren, air raid siren sound, emergency siren, and many more. All these ringtones are available for free, and once downloaded, they are saved on your device so that you can use them offline without an internet connection.

The app provides good quality audio, and you can set any ringtone as your default notification, ringtone, or alarm. You can also set any ringtone as a contact ringtone. The app is easy to use and works offline, making it convenient for users. The only downside is that it does not have any subcategories to help navigate easily.

Overall, Siren Sounds is a useful app for those who want to customize their ringtones with various siren sounds. Don't forget to rate and write a review to let the developers know how they are doing.