they need SEPARATE it in code 

 More chats, more data, encrypted backed grows over time.  There is a system option to delete older than a month per profile if someone wants auto purge.  In any case it has features I like. What's your preferred chat app? 

 u cannot backup contacts+restorekey only

data-of-chat must be separated 

 Well if we're doing wish list...on this topic...I would have it tell me size of all data included and have a slider bar that I could adjust the number of weeks per contact of chat history to include and tells me the resulting size of backup.  Boom  

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