Exact(3)
Let people add a similar timer to specific messages they send, or set a per chat thread default for how long your messages last similar to fellow encrypted messaging app Signal.
Otherwise it's $12.50 per chat.
But it is notable that there's not the same hard-coded limit of 10 people per chat as there is over on Google+, where "Hangouts" are one of the site's key selling points.
Similar(5)
The opt-in private chats feature must be initially on a per chats basis, and is currently only available for one-on-one chats — although Voxer is aiming to launch e2e encrypted group chats in Q1.
"We pay for the service on a per-call or per-chat basis, so over time it will be very economical for us".
The operations are quite similar, but Kim's argument is that Layer doesn't have the same functionality on a per-chat basis, like having an unlimited number of people chatting in the same room.
Another option would be for Facebook to extend to all chats the per message expiration date option from its encrypted Secret messages feature.
Informa said almost 19 billion messages were sent per day on chat apps in 2012, compared with 17.6 billion SMS texts.
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