Laugh synth for iOS has just been released, compatible with both iPhone and iPad. Laugh Synth makes it possible create laughing sounds with a simple touch of the screen to control different characteristics of the laugh.
Users can even sample their own sounds to create custom laughs. This is as easy as recording any sound you want (laugh, scream, burp, meow, whatever) and trimming to only use the portion of the waveform you want. Touch the screen to control the pitch and the level of effects present in the sound. Add reverb or other effects to further enhance the laugh. Have a look at the app by watching the video below: