Apps similar to Proton Calendar include Google Calendar, which is free for personal use. Other options are Tuta Calendar, Etar, Posteo and KashCal. There's no shortage of Calendar Apps like Proton Calendar, with more than 50 alternatives for the web, Android, iPhone, Mac and iPad.
An all-in-one personal organizer with a unique leather-bound visual style, combining calendar, notes, tasks, a project planner, and an encrypted password vault, with AI features and Google Calendar/Tasks sync.
Brazil
Hibi (Japanese for Days) is a personal calendar app that brings the warmth and texture of paper to your iPhone. Every detail, from the cream-colored pages to the elegant serif typography, is designed to make checking your schedule feel like opening a beautiful journal.
Germany
EU
Calendar-On-Demand is a sleek, transparent desktop calendar widget designed to help you stay focused and organized without breaking your workflow.
South Korea
PearCal is a shared calendar for a family or a small group that nobody can start charging you for. There is no account to create, no subscription and no server. You make a group, send an invite link or show a QR code, and everyone's events sync straight between their own...
United States
