Saturn vs TimeTree
We give Saturn a 3.4 GPA and TimeTree a 3.8, out of 4.0. Saturn grades higher on value for money. TimeTree grades higher on features and platforms. They get the same grade on the free plan and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Saturn
Free social calendar app built around school schedules and friends
Free
TimeTree
Shared calendar app for families, couples and groups
Free plan · from $4.49/mo
How we grade them
| 3.4GPASaturnVery good | 3.8GPATimeTreeExcellent | |
|---|---|---|
| Value for money | AFree, with no paid plan on Saturn's site and no in-app purchases on the US App Store. There's nothing to buy, so there's no bad deal to make. | BPremium is $4.49 a month or $44.99 a year, about typical for a calendar app. It takes the ads away and adds file attachments, an hour-by-hour view of up to 3 days and event priority. The first month is free on both. |
| Free plan and trial | AThe complete app is free on iPhone, iPad, Apple Watch and Android. No trial to run out and no locked features to trip over. | AShared calendars, chat and photos inside events, memos and to-do lists are all free, and you can keep as many calendars as you need. Most families could stay here for good. You do put up with ads. |
| Features | BIt handles rotating periods, block schedules, A/B days, lunch waves and flex blocks, compares calendars with friends, and takes events typed or spoken. For school life that's the lot. But Google Calendar is the only outside calendar the listings name. | AA calendar per group, a conversation inside every event, shared memos and to-do lists, and filters to see family, school and hobbies together or apart. It's built for shared planning and covers it fully. File attachments are Premium. |
| Ease of use | A4.7 from about 68,000 App Store ratings. Type or say "Dinner with Dylan on Tuesday at 7" and it's on the calendar. Shared calendars are joined through a link. | A4.9 from about 92,000 App Store ratings. Make a calendar, invite people, and everyone sees the same schedule. You can copy in events from the calendars already on your phone to get going. |
| Platforms and integrations | CiPhone, iPad, Apple Watch and Android, with Google Calendar and Snapchat to connect. That's phones, a tablet and a watch. No web or desktop version is listed. | AiPhone, Android and the web, plus Apple Watch, and it syncs with the other calendars on your device, such as Google Calendar. On a computer you use the web version, as there's no desktop app. |
| Best for | high school timetables shared with friends | one shared calendar for a family or couple |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Saturn and TimeTree. How we grade
Where they differ
- Saturn is free. TimeTree starts at $4.49 per month, or $44.99 per year.
- Only TimeTree lists a web app.
- Saturn also covers natural-language input.
- TimeTree also covers notes.
In commonFree planiOSAndroidTasksCalendar
At a glance
| Saturn | TimeTree | |
|---|---|---|
| Pricing | Free | Free plan |
| Starts at | Free | $4.49 per month, or $44.99 per year |
| Free plan | Free on the App Store and Google Play. The US App Store listing shows no in-app purchases, and the vendor's site lists no paid plan. | Free version with ads: shared calendars, chat and photos in events, memos and to-do lists. No file attachments, vertical view, event priority or dedicated support. |
| Free trial | None listed | First month of Premium free on both the monthly and the annual subscription |
| Web | ||
| iOS | ||
| Android | ||
| Made by | Saturn Technologies Inc. | TimeTree, Inc. |
| Price read from | apps.apple.com | timetreeapp.com |
| Checked | Oct 9, 2026 | Oct 5, 2026 |
Who each one suits
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
TimeTree
- Families and couples keeping one shared schedule
- Groups that want to discuss a plan inside the event itself
- Artists, stores and local governments publishing event dates to followers
Worth knowing
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.
TimeTree
- The free version shows ads; removing them requires Premium.
- Attaching PDFs and other files, the vertical hour-by-hour view and event priority are Premium-only.
- TimeTree notes that Premium pricing varies by region and currency and points buyers to the App Store or Google Play for the exact price.
- The App Store listing covers iPhone, Apple Watch and Apple Vision; computers use the web version rather than a desktop app.
Key features
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.
TimeTree
- Group-based shared calendars
- Create a calendar, invite the members and everyone sees the same schedule. You can keep as many calendars as you need, for example one each for family, school and hobbies.
- Chat inside events
- Each event has its own conversation where members settle details such as time and place, and can post photos.
- Memos and to-do lists
- Share notes and lists with the members of a calendar, or keep a memo for a plan that has no fixed date yet.
- Filters across calendars
- View your own plans, family schedules and other calendars together in one view, or use filters to switch between them.
- Device calendar sync
- Copy events from, or sync with, the other calendars on your device, such as Google Calendar, to get started with existing data.
- Public Calendar
- Organizations can publish event information to followers' calendars, with scheduled posting and repeating events. TimeTree describes the public feature as free.
Plans
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.
TimeTree
Free$0
Ad-supported shared calendars with event chat, photos in event comments, memos and to-do lists.
TimeTree Premium$4.49
per month, or $44.99 per year
No ads, PDF and other file attachments on events, a vertical view of up to 3 days, event priority and dedicated support.
Ways to pay less
Saturn
No public discounts listed.
TimeTree
- Annual discount
2 months off with the annual plan
TimeTree lists Premium at 4.49 USD a month or 44.99 USD a year, and describes the annual subscription as 2 months off.
