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Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
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Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
Just to answer here in the thread also, as answered on reddit:
IKEv2 has been discontinued on iOS for security reasons:
https://protonvpn.com/support/discontinuing-ikev2-openvpn-macos-ios/
You'll have to use an app, whether that is the Proton VPN app, Open VPN app, WireGuard app or something like Passepartout.
The OpenVPN app works with the OpenVPN protocol and thus with the OpenVPN configuration files.
The WireGuard app works with WireGuard configuration files.
Passepartout works with both, OpenVPN and WireGuard configuration files.
Thanks for sharing information here as well!