
HEY Calendar
Included with HEY, about $99/year
A scrolling timeline calendar from 37signals, with habits, journaling and time tracking.
An end-to-end encrypted calendar from Proton, with sharing, booking pages and Proton Mail integration. If it is not working for you, here are 8 apps that do the same job, closest match first.
Built from official pricing pages and app store listings, prices checked 2026-11-01. Not paid to be here.| App | Price | Platforms | Pick it if |
|---|---|---|---|
| Proton Calendar (the app you have) | Proton Free $0 | Everywhere | - |
| Google Calendar | Free with a Google account | iPhone, Android, Web | you want it free |
| HEY Calendar | Included with HEY, about $99/year | Everywhere | you want a close match |
| Notion Calendar | Free | Everywhere | you want it free |
| Vimcal | Free iOS plan | iPhone, Mac, Windows, Web | you want more power-user features |
| Apple Calendar | Free with Apple devices | iPhone, Mac, Web | you want it free |
| Morgen | 14-day free trial | Everywhere | you want more power-user features |
| Amie | Free tier | iPhone, Mac, Windows, Web | you want AI built in |
| Fantastical | Free basic version | iPhone, Mac, Windows | you want more power-user features |


The default shared calendar for most families and teams.
Pick it if you want it free, you want something simpler and you are sharing it with family.


A scrolling timeline calendar from 37signals, with habits, journaling and time tracking.


A fast, keyboard-friendly calendar for Google Calendar users.
Pick it if you want it free.


A fast, keyboard-driven calendar for people who live in back-to-back meetings.
Pick it if you want more power-user features and you run a small business.


The calendar already on every iPhone and Mac, free and syncing through iCloud.
Pick it if you want it free, you want something simpler and you are just starting out.


Calendars, tasks and an AI planner that schedules your to-dos into free time.
Pick it if you want more power-user features and you want AI built in.


Calendar, to-dos, email and AI meeting notes together in one workspace.
Pick it if you want AI built in.


A polished calendar with natural-language event entry.
Pick it if you want more power-user features and you use Apple devices.
We matched these apps to Proton Calendar by what they are for, who they suit and where they run, using our research on each app's official website and app store listing. We have not tested them hands-on for this page. Check the price on each app's own site before you buy.