The App comes with a generic library of symbols which can be added to or altered by the user. Kieran Speaks makes use of some of the Paxoncrafts Charitable Trust icon set.
Kieran Speaks requires a minimum android version of 3.0 (Honeycomb)
Kieran Speaks requires the READ_EXTERNAL_STORAGE android permission which allows the App to read the contents of your SD card. This is required to allow the user to import custom images from the device.