Does Signal work on ? If it doesn’t, that’s (sadly) a deal-breaker.
Also, a really annoying alarm app would be nice ― I only mention it because any 3rd-party alarm would be too easy to turn off quickly.
Conversation
To elaborate : the three main apps I use are Signal, Discord, and Tor Browser. If any of them don’t work, probably will not work for me.
I know that Signal uses Google Play Services, but has a fallback option if those are absent.
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Signal works fine without Play services.
Tor Browser and Orbot work fine.
Discord probably works but might not support push notifications without Play services. You would need to test it.