AIMP: Audio Cutter is small tool to create, edit and manage ringtones.

Key features:
+ An ability to set audio file as default ringtone for alarm / call / notification
+ An ability to set audio file as ringtone for specified contact
+ An ability to convert unsupported by OS file formats to MP3
+ An ability to crop audio file or existing ringtone
+ An ability to extract audio part to external MP3 file
+ An ability to preview / share audio file
+ Integration with the AIMP player
+ Supports for night mode