It would appear they're using this app now, post-incident, because they got in trouble. (And having messages with Vance, Gabbard, etc. be visible to the press pool camera is... not a great look for the guy who accidentally added a reporter.)
https://www.nytimes.com/2025/04/15/us/politics/cia-director-...
> All of the messages from a leaked group chat have been deleted from the phone of John Ratcliffe, the C.I.A. director, the agency said in a court filing.