Fossify Calendar is a productivity app developed by Fossify.
Download Statistics
Fossify Calendar has been downloaded 100 thousand times. In the last 30 days, the app was downloaded 7.2 thousand times.
User Ratings
Fossify Calendar is rated 4.41 out of 5 stars. The rating is based on 1.2 thousand ratings.
App Information
Fossify Calendar is FREE to download. The APK download size is 7.13 MB. The latest version available is 1.10.3. The last update was on February 16, 2026.
Technical Requirements
Fossify Calendar requires Android 8.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play January 2024.
Description
Tired of cluttered calendars and privacy concerns?
Get a detailed PDF report for Fossify Calendar with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
Great calendar :) Only thing is some events for some reason don't display in the widget view
★★★★★Kevin Nay· May 8, 2026
Edit: I'm dumb, I found the events. I agree with whoever wants to be able to scroll in monthly and yearly views. I would also love a feature where we can set the type of calendar (examples Gregorian and IFC or maybe even having entirely customizable day/week/month/year options). I still love how customizable this app is!
★★★★★Masudul Alam· Sep 29, 2025
Ossify Calendar is a simple, open-source calendar app focused on privacy and ease of use. It works entirely offline, storing events locally without requiring unnecessary permissions. Users can create recurring events, set reminders, and switch between daily, weekly, or monthly views. The clean, ad-free design makes it lightweight and distraction-free. While it doesn’t sync with online accounts, it’s ideal for those who want a straightforward, private way to manage their schedules.
★☆☆☆☆K H· Feb 4, 2026
This app doesn't sync properly. Shared calendars are broken or non-existent. Editing an event creates a second event... Seriously? What a disappointment.
★☆☆☆☆Mircea Zahan· May 1, 2026
The widget is simply unusable, the font inside it's gigantic and also has no option to show a simple list with just name and next occurrence (instead of full-fledged calendar items).
★☆☆☆☆Rowan X· Nov 2, 2025
Didn't work, even when I manually gave it permission to access the calendar. Difficult to uninstall as it gives itself the app name "Calendar" instead of Ossify Calendar".
★☆☆☆☆D· Sep 19, 2025
UNINSTALLED: I repeatedly asked for monthly view to remain you didn't do it. I asked for control over categories (like birthdays) bc your categories do not retain the information, abd you refuse to fix it So, I created my own category "birthday" and it retained the information. However, you daily forced YOUR category "birthdays" to appear but none of the birthdays were able to stay in there! You knew all this and did nothing.
★★☆☆☆lewis kelly· Jan 20, 2026
This seems like a good app, but I can't seem to find a way to add Cal DAV parameters for a personal calendar. The app seems to only recognize the parameters for my gmail account and doesn't allow for a third party calendar to be connected. I also couldn't find any documentation that explained if this was possible or not.
Google Play Rankings for Fossify Calendar
This app is not ranked
Technologies used by Fossify Calendar
Fossify Calendar is requesting 13 permissions and is using 17 libraries.
Permissions
Development tools
test access to protected storage
Your personal information
read calendar events plus confidential information,
read your contacts,
add or modify calendar events and send email to guests without owners' knowledge
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
Android Jetpack core
Kotlin
Google gson
Glide
ReactiveX
FasterXML Jackson
jsoup: Java HTML Parser
Joda