Fossify Calendar vs Simple Calendar Pro (2026): which should you pick?
As of Nov 13, 2026, Fossify Calendar grades higher than Simple Calendar Pro: 2.8 against 2.0 out of 4.0.
Checked Oct 9, 2026 and Nov 13, 2026 · graded Oct 10, 2026 and Nov 13, 2026 by ToolGPA
Fossify Calendar grades higher on the free plan. They get the same grade on value for money, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Fossify Calendar
Open-source Android calendar with no ads, tracking or account
Free
Simple Calendar Pro
Offline Android calendar with CalDAV sync and no ads, bought once
From $2.99 one-time
Which one is for you
Pick Fossify Calendar if
- Fits if you're on Android and want a calendar with no ads, no tracking and no sign-up
- Works for a private calendar that stays on the phone, installed from Google Play or F-Droid
Look elsewhere if
- Skip it if you also use an iPhone or a computer, because it's Android only
- Not for you if you want a cloud account that follows you between devices, as it has none of its own
- Too light for people who want tasks, booking links or typed natural-language entry
- Watch out: help is a public issue tracker and community channels, and the project runs on donations
- Watch out: Google Play and F-Droid release on their own schedules, so versions can differ between stores
Pick Simple Calendar Pro if
- Fits if you want a plain offline calendar on an Android phone
- Works for people who want no ads and a one-time price
Look elsewhere if
- Skip it if you use an iPhone, Mac or the web, as it is Android only
- Watch out: the Pro listing was last updated on 3 October 2023
- Not for you if you want booking links or team scheduling
- Watch out: the vendor's site now points to a free version with ads and in-app purchases
How we grade them
| 2.8GPAFossify CalendarGood | 2.0GPASimple Calendar ProFair | |
|---|---|---|
| Value for money | ANothing to pay, ever. The complete app is free on Google Play and F-Droid with no in-app purchases, where the middle of this category asks $6 a month. The project lives on optional donations. | A$2.99 one-time, well under a year of the $8 middle calendar subscription. |
| Free plan and trial | AFree and open source under GPL-3.0, with no ads, no tracking, no account and no paid tier holding anything back. There's no limit here for a normal person to run into. | FNo free version of this app and no trial; the vendor's free app is a separate listing with ads. |
| Features | CThe basics and no more: day, week, month, year and event-list views, repeat rules, reminders with custom sounds, file import and export, birthdays from your contacts. The gaps are owned up to on its own pages. No sync service of its own, no tasks, no plain-language entry. | COffline calendar with views, events, reminders and import and export. It does that fully and it is a smaller job: no booking or team features. |
| Ease of use | BNo rating on record, as it isn't on iPhone, but there's nothing to set up: install it and it works, with no sign-up at all. Syncing does assume the Google, Outlook, Nextcloud or Exchange account is already on the phone. | BNo rating counted, but it is install and start with nothing to set up. |
| Platforms and integrations | DOne operating system. The Fossify project lists Android as its only platform, and the app reads whatever accounts are already on the phone rather than syncing itself. | DAndroid only, with CalDAV, Google, Outlook, Nextcloud and Exchange sync. |
| Best for | a private Android calendar with no ads | an offline calendar on Android |
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: Fossify Calendar and Simple Calendar Pro. How we grade
Where they differ
- Simple Calendar Pro can be bought with a one-time purchase.
In commonAndroidOpen sourceWorks offlineCalendar
At a glance
| Fossify Calendar | Simple Calendar Pro | |
|---|---|---|
| Pricing | Free | Paid |
| Starts at | Free | $2.99 one-time |
| Free plan | Free and open source under the GPL-3.0 license, with no ads, tracking or account. The project takes donations through GitHub Sponsors, Patreon, PayPal, Liberapay and Open Collective. | None |
| Free trial | None listed | None listed |
| Android | ||
| Made by | Fossify | Simple Mobile Tool |
| Price read from | play.google.com | play.google.com |
| Checked | Oct 9, 2026 | Nov 13, 2026 |
Worth knowing
Fossify Calendar
- Android only; the Fossify project lists Android as its sole platform.
- The app has no sync service or cloud account of its own. Syncing depends on accounts or calendar providers configured on the device.
- Development is funded by donations, and help comes through a public issue tracker and community channels.
- Google Play and F-Droid publish releases on their own schedules, so versions can differ between stores.
Simple Calendar Pro
- Android only; the pages read list no iPhone, Mac or web version.
- The Pro listing was last updated on October 3, 2023, and the vendor's site now describes a free Simple Calendar app that contains ads and in-app purchases.
- It is a personal calendar; the pages read mention no booking links or team scheduling.
Key features
Fossify Calendar
- Five calendar views
- Day, week, month, year and event-list views, with event filters to narrow what is shown and controls for color, theme and display.
- Recurring events and reminders
- Events take times, durations, reminders and advanced repetition rules. Reminder sounds, looping audio and vibration can be customized.
- Sync through device accounts
- Calendar data can sync through accounts or calendar providers set up on the device, such as Google Calendar, Outlook, Nextcloud or Exchange. Fossify runs no sync service of its own.
- Import and export
- Calendars can be imported from and exported to files, which keeps the data portable and gives a way to back it up or move it to another app.
- Holidays, birthdays and anniversaries
- Holidays can be imported, and birthdays and anniversaries can be drawn from the phone's contacts if contacts access is granted.
- No Internet permission
- The app does not request Android's Internet permission, contains no advertising and sends no app data or usage records to Fossify.
Simple Calendar Pro
- Offline use
- The listing says no internet access is needed, so events stay on the device.
- CalDAV and Google Calendar sync
- Events can sync with Google Calendar, Outlook, Nextcloud, Exchange and other CalDAV services.
- Several views
- Switch between daily, weekly, monthly, yearly and list views, with a home-screen widget.
- Events and reminders
- Set times, durations, reminders and repetition rules, and import holidays and contact birthdays.
- Import and export
- Events move in and out through .ics files, and settings can be exported to a text file.
Plans
Fossify Calendar
Fossify Calendar$0
The complete app, installed from Google Play or F-Droid, with no ads or in-app purchases. Donations are optional.
Simple Calendar Pro
Simple Calendar Pro$2.99
one-time
Paid app on Google Play (US price); the listing says it has no ads.
Common questions
Which is cheaper, Fossify Calendar or Simple Calendar Pro?
As of Nov 13, 2026, Fossify Calendar is free, and Simple Calendar Pro starts at $2.99 one-time.
Which has a free plan, Fossify Calendar or Simple Calendar Pro?
As of Nov 13, 2026, only Fossify Calendar has a free plan. Simple Calendar Pro does not.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.