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Move to TOTP Authenticator from any app
Moving your codes to TOTP Authenticator takes a few minutes, and you never have to delete anything until you've confirmed every code works. Pick the app you're moving from below. Most guides use a direct import. A few need you to re-enroll accounts one at a time, and each of those says so at the top, before you start.
Google Authenticator
Direct import (export QR)
~2 min
2FAS
Direct import (.2fas file)
~3 min
Aegis
Direct import (.json file)
~3 min
Any app with a code export
Direct import (.txt or QR list)
~3 min
Ente Auth
Import if plain-text export, otherwise re-enroll
~5–30 min
Authy
Re-enroll each account
~15–30 min
Microsoft Authenticator
Re-enroll each account
~15–30 min
LastPass Authenticator
Re-enroll each account
~15–30 min
Already using TOTP Authenticator and just got a new phone?
That's not a switch between apps. Read Moving to a new phone instead.