This looks good, as I wanted to "escape" the Authy jail (you cannot easly move out with your secrets), but moving a lot of 2fa's to a "new thing". How to make sure they are a good project?
Also, Ente is fully open-source[2]. If you wish, you can self-host the service and point the app your custom server[3].
[1]: https://help.ente.io/auth/migration-guides/export
[2]: https://github.com/ente-io/ente/
[3]: https://help.ente.io/self-hosting/guides/custom-server/