bennyblanco
Ente Auth has an option for cloud sync. It also can be run without an account so 2FA codes are local, Aegis is only local. If you run local then you'll have to save the code file to a USB, drive, or your own cloud storage.
Either service is good. Importing codes from a local backup is really simple, but the onus is on the user to ensure it's up-to-date obviously.