[Delenot]

Can anyone suggest an app that allows me to snap a picture with sound activation? I would also prefer this app to have a shutter timer as well. My last request would be that it is a free app...or ateast have a full version trial to make sure it is worth the potential cost.

[Stephen Colias]

There is an app that does just that. Its called whistle camera and what it does is take a picture whenever it hears a whistle. perfecto por taking pictures of yourself or group photos without anyone being left out

[klausmmia]

Here's another one
Hope that helps.