try https://old.programming.dev/

As you switch, I would highly recommend you purchase a domain for yourself, and redirect email from it to your new provider. This separates your “identity” from your email host, so you can switch the latter without having to go through this process again.

both mobile and desktop have the plaintext notes in a sqlite db. they’re “easy enough” to export if you’re bailing on the app, but not to regularly switch between two different apps