Transportr VS Aegis

Unfortunately yes. I see most of the providers were removed from Navitia's side: https://github.com/grote/Transportr/issues/877

Citymapper → Transportr (seems abandoned...)

Better, the city could pay to improve existing FLOSS applications (Transportr for instance).

Transportr - Open Source Public Transit (version 2.1.4): Free Public Transport Assistant without Ads or Tracking

Transportr (version 2.1.3): Public Transport Companion

In my opinion it would be good idea to let users backup Tutanota application using Seedvault. Here you can see example of how such backup option could be implemented in privacy-respecting way. More details about it here. Thank you in advance.

Source: https://github.com/grote/Transportr

If you can read Java you may haves a look at the Transportr source code. I don't know if it covers Oran but at least it should give you an idea how to do such an app.

For 1Password I use a Yubikey, but for 2FA in general, I have a backup phone running Aegis[1].

[1] https://getaegis.app/

Bottom line is, why in the world would you use a mysterious closed source app when there are better options out there? 2FAS is one of the better ones. Aegis Authenticator is another good choice for Android devices.

You can enable 2fa with amazon I suggest you do that with a 2fa app like aegis, that will greatly increase the security of your account and require the 2fa code to login to your account.

Aegis Authenticator has been a lifesaver for me: https://getaegis.app/

I use Aegis[1] on mobile and OTPClient[2] on my computer, both are regularly backed up on change.

I do not use the TOTP feature in my password manager (though I can split it to new DB in keepassXC) as feel it will defeat the purpose of 2FA.

[1] https://github.com/beemdevelopment/Aegis

Google Authentificator → Aegis