Apple Calendar vs Saturn

Apple Calendar

• People with an iPhone, iPad or Mac who want a calendar at no cost
• Seeing iCloud, Google and Exchange calendars side by side
• Families and friends sharing an iCloud calendar

Saturn

• High school students with rotating, block or A/B day schedules
• Friends who want to see when each other are free without swapping emails
• Clubs and teams that need a shared calendar members join by link

Apple Calendar

• Apple's setup guide covers iPhone, iPad, Mac and iCloud.com, with Windows handled by syncing to Outlook through iCloud for Windows. No Android app is listed.
• Calendar on iCloud.com needs a tablet or computer; Apple's guide says it cannot be used from a phone browser.
• Editable sharing is limited to iCloud calendars and people with iCloud accounts. Everyone else can only view a public, read-only calendar.
• Time-to-leave alerts are not sent for destinations more than three hours away, and travel time does not update when an event's location changes.

Saturn

• Mobile apps only: iPhone, iPad, Apple Watch and Android. No web or desktop version is listed.
• The website still presents Saturn as the calendar built for high school, and the terms limit each school community to students of that school.
• Google Calendar is the only outside calendar the store listings name as a connection.
• The terms of use require users to be at least 13 years old.

Apple Calendar

Several accounts in one calendar

Add iCloud, Google, Microsoft Exchange and other CalDAV accounts and see their events together in List, Day, Week or Month view, with a color for each calendar.

Natural-language event entry

On Mac, typing a phrase such as "Football Game on Saturday from 11 am - 1 pm" creates the event with its date and time filled in. Siri can add or change events by voice.

Travel time and time-to-leave alerts

Adding a location attaches a map and weather, and Calendar sends an alert when it is time to leave, based on traffic or transit conditions. Travel time can be added to the event's duration.

Shared and public calendars

Share an iCloud calendar with other iCloud users as view-only or editable, or turn on Public Calendar so anyone with the link can view and subscribe to it.

Reminders next to events

Scheduled reminders from the Reminders app appear on the calendar, where they can be created, edited and marked complete.

Invitations and video call links

Send and answer invitations through iCloud, Exchange and other accounts. Events can carry a video call link, a FaceTime call on Mac, attachments and notes.

Saturn

School schedule formats

Handles rotating periods, block schedules, A/B days, lunch waves, advisory and flex blocks. The listing says Saturn is in over 20,000 US high schools and can be carried on to college.

Compare calendars with friends

Shows when friends and family are free without needing their email address, so overlapping free time can be turned into a plan. Friends appear alongside your own calendar on the home tab.

Shared and group calendars

A shared calendar can be made for a trip, a household, a club or a team and joined through a link. Members get change and reminder notifications as events are updated.

Typed or spoken event entry

Typing or saying a phrase such as "Dinner with Dylan on Tuesday at 7" puts the event on the calendar. Events, to-dos and reminders can all be added by text or voice.

Google Calendar and Snapchat

Google Calendar can be connected so its events appear in Saturn. Connecting Snapchat brings in friends, birthdays and Bitmojis.

Apple Watch app and widgets

The Apple Watch app shows a countdown to the end of the current class or event, a schedule view of the day and watch face widgets, synced from the iPhone app.

Apple Calendar

• Free$0

  Every feature of the app on iPhone, iPad, Apple Watch and Mac, plus Calendar on iCloud.com with an Apple Account.

Saturn

• Saturn Calendar$0

  The complete app for iPhone, iPad, Apple Watch and Android, listed as free with no in-app purchases on the US App Store.