Informant vs Proton Calendar
| Informant | Proton Calendar | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Android, extension, iOS, macOS, Web | Android, iOS |
| Free plan | Yes | Yes |
| Paid from | $3.99/user/mo | — |
| Shared calendars | No | Yes |
| Calendar sync | two_way | one_way |
| Mobile apps | ios and android | ios and android |
| Scheduling links | — | Yes |
| Video meeting support | — | Yes |
Both are listed in Best Calendar Apps. On Everything Xiaomi, Proton Calendar scores higher on our published basis.