Thank you for your feedback. We're working on improving the Proton Calendar offer, currently making sure that our iOS app is on par with its Android equivalent

Thank you for your feedback. We're working on improving the Proton Calendar offer, currently making sure that our iOS app is on par with its Android equivalent (we've recently made it possible to add participants directly from the app, as well as some additional convenience features). Once this is finished, we'll look into other planned improvements for Proton Calendar.