Use calendar offline
I don't really mind whether its a bridge to an existing app - Apple Mail, Lightning - or adedicated proton app but I need a calendar that I can use (rather than just view) offline. That means adding and editing events. This seems to me a pretty basic function, without it Proton Calendar is not much use to me. I am offline a lot of the time.
Nazareno Redi commented
This is one of the missing features that prevents me to go to paid plan
It's not necessarily an offline calendar that I need, but integration with offline applications. I'd love for Proton Calendar to be able to sync with Gnome Calendar so that I get proper integration into my desktop environment, native notifications for events, etc.
I agree. I love proton, and I like the proton set up, but proton calendar only via web and no option to make it work when offline is a problem. Currently for me I can't even 'view' when I'm offline.
I agree. Right now, I need to augment ProtonMail with MS Outlook just to get some basic offline functionality on my devices.