Proton Calendar: Secure Events

I love the privacy but it is missing some key functions. I would like to be able to reassign appointments and such to different calendars then where it was created.

Does all that a calendar needs to, clean and easy to use. Notes: 1. Sometimes the date selected on the calendar and the agenda shown below don’t match up. 2. I would love a task list function for stuff that needs to happen on a certain day, but not at a certain time. 3. The time minute increments are not the best, I would prefer the minutes to be restricted to increments of 5 so that I don’t need to scroll through all 60 minutes to get to the time I was to set. No one uses minutes 1-4, or that could be a toggled setting.

Desktop Proton Calendar allows you to click to create an event and drag events around. It’s buggy, but functional. For some reason, this is impossible to do in the iOS version. The process of creating and managing events in iOS Proton Calendar is cumbersome, slow and frustrating. I have to click an event, click edit, click time, then click the time dial to type in a new time. To rearrange events, you have to do this every single time. It’s agonizing if you need to fluidly rearrange a schedule, because dragging events with your finger does absolutely nothing. Editing the time of an event is buggy. Occasionally, if I edit the time an event ends, it moves the time the event starts as well. If I’m accessing my calendar on my phone, it’s because I am needing to accomplish something quickly. I don’t have time to fight against my calendar interface. It’s impossible, currently, to browse years ahead or behind. You cannot schedule an event a year in advance unless you scroll endlessly in the event configuration windows on the date dial. This is all easier to do in the desktop version. However, I do not want to pull up my laptop to schedule a distant wedding invite or annual doctor’s checkup. I am a subscribed proton customer. I pay for 500gb of cloud storage. I use it religiously on windows, macOS, Linux and iOS. However, this makes me all the more frustrated that a paid service falls short of the freemium offerings from Google.

The calendar does offer basic functions comparable to Google calendar. However, when attempting to delete a recurring event, there are only two choices: delete all events, or delete one specific occurrence. There is no option to “delete this event and all future events.” That’s a major drawback. if my work schedule changes, I would have to delete all events for all of time and re-enter them, which is not realistic. Additionally, when viewing the agenda, the user must select each date individually. It would be helpful if the agenda or if an additional “schedule“ view could be added to simply allow a scrollable view of events, skipping days when no events are scheduled. Finally, some type of (even primitive) task list would be helpful. Thank you!

Thanks for finally making this app iPad friendly. Now you just need to support rotating the app 180 degrees. As a lefty, I use my iPad “upside down” because I have my pencil attached on the left.

Update 7/3/25: So disappointed to continue to report that this incredible company has created such a deficient app that is essentially unusable for regular and recurring/such basic actions like modifying events, deleting events, etc. I think I’m now at the point that it would be better that Proton did not have an iOS calendar app until it can perform all actions that anyone using a calendar app would expect, though unquestionably those functions reflective of the fundamental purposes of a calendar. I love Proton and all it stands for. It’s just beyond me how this vital production/business app can’t perform such basic functional needs. This is my sole Proton disappointment. One day—I believe—I will be able to strike through all these reviews to report the app’s achieved basic business functionality. Until then, I’ll continue to pay my annual bill and complain about the calendar app while convincing others to use Proton, ditch the Gmail’s of the world, and proselytize all that is privacy. Original review: The calendar app is little more than a calendar viewer. To use Proton Calendar app on your iPhone requires you run an instance of it in the web browser if you want anything more than viewing your events. You still have to schedule from the web version. No quality integration with the email app. I rate Proton 5 stars as a company and am a paying subscriber. Unfortunately, I could not use Proton for my business as its productivity tools are incomplete and do not support non-web true functionality. I hope I get to up this rating to 5 stars one day, however, Proton has been unable to make any significant improvements to the calendar app. TestFlight version doesn’t provide anything special to test. 👎👎 Two thumbs down, unfortunately.

The week numbers on the left should be optional, they don't look great and are easy to mix up with the actual dates on the calendar

A longtime user of the Proton apps wanting to say thanks for the iPad screen size support. When you have a moment, adding support for rotating iPad screen would be appreciated. Thanks for your ongoing efforts in support of privacy.

Latest version crashes on load. I am a paid subscriber, contacted support and they said they are “working on it”. It’s been weeks. Completely unacceptable.

Just made the switch from Google Calendar. Overall Proton Calendar has the features I expect (custom event colors, multiple calendars, subscribing to outside calendars) and was easy to switch to. But to me it’s missing a very important feature - tasks that can be checked off.