Works like a champ on my gen 4 iPad!

What a hoot this application is!

I have seen the other recent reviews that have indicated problems.
A suggestion to the developer - regress against a number of platforms/iOS versions.
A suggestion to users, look for possible interactions with othe installed apps and report this to the developer.

It works very well on mine.
I prefer it to the guitar app by the same team.

Tweakphile about Futulele - Digital Ukulele with FX and chords