Ooh, #Tailscale just launched an open beta for a completely redesigned #Android app, and it looks GREAT.
Opt-in to the beta here:
https://play.google.com/apps/testing/com.tailscale.ipn
And they've asked for feedback here:
https://docs.google.com/forms/d/e/1FAIpQLSei2nYC_r-A-A_TboLF5IN4TiAMzyQX24mBOc4cYMC03CrduA/viewform