Paid iPad app: https://itunes.apple.com/us/app/proloquo2go/id308368164?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/proloquo2go/id308368164?mt=8&uo=4&at=10l6SU
Website: http://www.fotobabble.com/
Free iPhone app: https://itunes.apple.com/us/app/fotobabble/id353078443?mt=8&uo=4&at=10l6SU