Navichord is described as 'intuitive chord sequencer and MIDI controller designed to help you make great chord progressions fast and loop in sync with Ableton Link' and is an app in the Audio & Music category. There are three alternatives to Navichord for Android, Android Tablet, iPad, iPhone and Windows. The best alternative is TouchDAW. Other great apps like Navichord are XotoPad (Paid) and Midi Studio (Paid).
TouchDAW is a full-featured DAW control and general purpose MIDI control app for Android™ tablets and phones. It allows you to remote control popular digital audio workstation software as known from standard hardware control surfaces.