App For Calendar Sharing. Ourcal is the free shared calendar app for ios and android helping 50,000+ families, couples, and friends organise life and coordinate calendars together, in one private app. Most apps have collaboration features so family members who are capable of using the apps can create or edit their own schedules into the shared calendar.

No need to check the app all the time thanks to notifications! Google calendar is the best shared calendar app online by default.