Customiseable app to enable the non-verbal/non-literate user to send text messages to designated communication partners

The user presses a sequence of 2 messages to be automatically sent by text to the communication partner of their choice. All messages are represented by a picture/photo (e.g. I need shopping, please get me some apples)

Pictures, text labels and spoken labels can all be customised

App can be modified remotely (i.e. SLT/carer can change messages on a desktop and it will be immediately available to the user on their tablet/phone)