Diggi App. Is a free interactive digital messaging app that allows you to share Audible picture messaging. Add text captions to any video/picture meme, create your own audible messages over memes or download audible messages from a listing of stored default messages. Make your expressions come to life by giving feeling and emotion through voice activation to every meme, GIF, video or picture message. Switch from audible messaging to LiveChat back to SMS messaging via Wi-fi or Internet connection. My Diggi App. Is available for iOS devices.