Chord! (Android) app for $1.99

All fingerings, any tuning, Chord is the ultimate chord charts book you'll need! Chord! is mainly a guitar (or any fretted instrument) chord finder. Unlike most of the other apps, it generates itself chords diagrams, so it supports any chord (even slash ones like D/F#) in any tuning, with any number of strings (guitar, banjo, ukulele, bass, mandolin, etc.). You can fine tune to your needs the chord search algorithm, like specifying the maximal number of fingers or fret span for example.+