Naven
Answers
How do I stop getting message notifications at night?
Use the operating system's focus or do-not-disturb schedule rather than the app's settings — it applies to everything at once and does not need to be repeated per app.
Per-app muting works and has to be remembered for each one. A system schedule is set once.
Most platforms also support muting a single conversation, which is the better tool when the problem is one busy group rather than the hour.
On Naven, muting a conversation stops it notifying you while leaving you in it, and notifications say who a message is from rather than what it says.