[progbits]

I can recommend the Aegis app for Android. Works great and has encrypted backups.

[0x49d1]

Or Ente Auth: https://ente.io/auth. Opensource, encrypted, can be used on any OS, has sync/backup. The problem with using same password manager for OTP is that you kind of loose 2nd factor: 1 app compromised - passwords and OTP are compromised too. My approach is to use password manager's OTP generator for non critical services and dedicated app for the critical ones..

[styanax]

Replied to another comment with the same recommendation before seeing this, here's the URL for those interested:

https://github.com/beemdevelopment/Aegis