The Google Play Store version of Proton VPN (not the F-Droid or GitHub versions (unless they have been updated the last few weeks)) allows people to use Proton VPN as a 'Guest', i.e. without logging into a Proton account. The average user might think, because they have not provided an email address or any other details whatsoever, that using Proton VPN as a Guest gives them an additional layer of anonymity.

Would they be correct?

Or am I right in thinking that when a person downloads the VPN app from the Play Store, their Gmail address (logged into the Google Play Store) is shared with Proton, and because Proton receives this identifiable information from Google it is why Proton allows 'Guest' usage on the Play Store version and not on the FOSS versions of the app?

If yes, does Proton store these Gmail addresses and are therefore able to provide them to Swiss authorities if demanded?

Proton VPN says they are a "no-logs VPN service", but their [definition](https://protonvpn.com/supp

I downloaded ProtonVPN (5.5.68.0) a few months ago via the Google Play Store and have been happily using it ‘anonymously’ as a Guest with no problem. I recently purchased a new Android device and this time I chose to download the same VPN (5.5.68.0) via F-Droid to maintain some privacy. However, there appears to be no option in the FOSS version of the app to use Proton VPN as a guest - I am told I have to sign-up with an actual email address.

For a company claiming they are "Empowering you to choose a better internet where privacy is the default. Protect yourself online with... Proton VPN" (look to the right of this page), this decision astounds me. Assuming the error is not on my part, why is the purported FOSS version on F-Droid forcing users to give identifiable information (even if it’s only an email address and password), but the Google Android version does not?