I would love to have a Proton calendar app for iOS to work with the mail app.

Please make it possible to color the background of different events in the calendar. Currently all events have the same color and so it's bit confusing to distinguish among them from quick look at the calendar.

This feature is so important in the calendar for me as a user.

There should be definitely, and fast, a "search" option in Proton Calendar.
One has to be able to find a word, a name, an address etc, instead of going back searching day-by-day this item.

Please add the actual name of the event and its details to the email notification.

I was excited to have the email notification option added, which was the last thing keeping me from switching completely from Google. However, the email notifications themselves are disappointing, as they don't even say what the event is, so I have to open my calendar separately to see. I keep the notifications in my email as a reminder and delete them when I'm done, and I need to know what the actual reminder is for without having to open the calendar.

In Calendar is only a PM /AM time notation now. I prefer the 24 hours notation (International Standard ISO 8601 )
thanks

Calendar would be much more useful if you were able to search for a specific event.

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.

It'd be super useful if there was a mobile widget for the ProtonCalendar app so I can see my calendar from my home screen

Proton Contacts allows users to record the birthday for each contact. It would be great if these birthdays could automatically appear in Proton Calendar.

I use Protonmail for my private calendar, but Outlook/Google for work. I would like to have Proton Calendar integrated in e.d. the Android native app so I have all my calendars in one.

The sync of changes has a huge delay. Shared calendar can take hours, sync in mobile app can take minutes. This should be both near real time.

I request a ProtonCalendar App for easy use on iPhone's and Android. Proton has already made MAIL and VPN apps successfully, so the Calendar app would be a great feature I would use multiple times everyday.

I get that Proton is trying to be an active and safe competitor to Google, but I chose Proton because you were NOT google. The Logos changing is one thing and understandable for a growing company (although personally I find them awful and suspiciously close to the google CI), but the new standard colors in the calendar are very shrill and saturated and frankly hard to look at.

Please consider a more pastel and less shrill approach or at least an additional Dark legacy theme that includes the calendar colors.

PROBLEM: I deleted a Calendar event, and have no way to undo the delete (i.e. I want to restore a deleted event.)
RECOMMEND: For Calendar, allow restore events for up to 30 days after the event has been deleted.

Please, add possibility to modify events that I have been invited to on mobile calendar app.

Currently, to change e.g. category, one needs to do this using web app. Even though the event has been send from another Proton user.

I would like to be able to make my calendar collaborative - e.g for use with my spouse or family. One calendar where everyone in my household can add/view/modify changes.

Enlarge day box size of monthly view or allow changes to font size in order to display more information in day boxes. Can send a picture if desired.