MP3 Cutter, Merger & Ringtone Maker is a free tool that can cut audio files from your phone and save them as MP3, WAV, OGG, or even the original format. It can also merge multiple MP3s into a single file.

It is very easy to use and has a simple interface, which makes it very user-friendly. It supports MP3, WAV, OGG, and many other audio formats. You can also set the saved file as your phone's ringtone, alarm, and notification.

This app is free to use and has no ads or in-app purchases. You can download it for free on Google Play.