The application PianoChords Pro allows you to find equivalences between guitar chords, piano chords and ukulele chords.
Seek agreement from the list, click on the equivalence and keyboard and tablatures (guitar and ukulele) appear.
Addition compared to the free version PianoChords Lite:
-More agreements: minor, major, maj7, sus2, 7, m7, 6, m6, 9, m9, dim, aug, 7B9, add9, sus4, m7b5, 11 ...
-Addition of ukulele tablatures
New-design.
-Now available for iDevices for OS 4.3.