A few stupid questions:

1) Is keychat fully open source?

2) How can it receive sats via LN but there is nothing about managing channels and liquidity? What LN server is it using under the hood?

3) What are the privacy implications? Does the Keychat team somehow see its users' cashflows?

4) what happens if the iOS App Store cracks down on this app and bans it? will all my data and balance be lost?