Whoa, turns out there's a way to backup your Authy TOTP secrets to import elsewhere. Involves installing the Chrome Authy app and pasting some JavaScript code into the app's browser console which is where the secrets are then printed.

Followed these instructions up until pasting the code:

The Gist code is outdated but this comment thankfully has working code that conveniently prints the QR codes out in the browser console.

If you have a rooted Android there's also this option for exporting your TOTP secrets:

Sign in to participate in the conversation
nitrohorse Ⓐ

Personal instance of nitrohorse (