About 2 years ago I crafted a simple desktop app with JS/HTML/Neutralinojs for handling a list of OTP providers. It was ok, but later I moved from Neutralinojs to Tauri. Once Tauri hit v2, I adapted my app to work on mobiles.

What I like about it: it's very barebones. No cloud sync. In fact**,** no network access is required whatsoever. Just a list of OTP providers that you can manually edit and import/export. Supports imports from 2FAS app. Keen to add more import formats if anyone is interested.

I personally use it on macOS and Android. There are also builds for Linux and Windows which I haven't tested, so let me know if you try them and they don't work.

Mobile version can also scan QR codes. Desktop version can't (only import settings from somewhere else is available).

Here's a link to the repo https://github.com/jodaka/otphub where you can find binaries under the Releases section or clone/build yourself.

P.S.…