A free program for Android, by Blips Co.

Blips – Melody Maker is a musical app that lets you compose and play your own melodies in seconds. It is easy to use and allows you to learn how to compose music.

Blips is a tone-matrix style sequencer that can create melodies from any sound. Simply tap a sound, choose a note, and you’re done. There are many sounds and melodies to choose from.

You can choose from many different instruments and scales. You can compose music in any key and with any sound. The app allows you to play your music and change the speed and pitch of the notes.

It is possible to save your compositions and play them back.