ICSx⁵ – Subscribe to calendars

272 reviews
Content rating
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About this app

ICSx⁵ allows you to add/subscribe and manage external (Webcal) iCalendar/.ics files on your Android device. One-way sync to your device.

Add high days and holidays, your sports teams events, time tables of your school/university or any other event files that come in ics/ical format. The app will import these events for you and displays it in your favorite calendar app on your Android – it integrates seamlessly into your device. ICSx⁵ uses state-of-the-art technology for synchronization that provides the ability that you always have the most up-to-date version of any added calendar file. All events are perfectly delivered to you devices calendar.

* Subscribe to Webcal feeds (= synchronize at regular intervals) e.g. shared calendars from icloud.com
* You can also pick .ics files from your local device and add its events to your calendar.
* Allows to open webcal:// and webcals:// URLs on your Android web browser
* Seamless integration to other calendar apps
* Set a sync schedule
* Intelligent update checker to save bandwidth
* Authentication and HTTPS supported

We care for your privacy and have high security standards. Therefore we have made ICSx⁵ completely public and open source. No data (neither login data, nor calendar data, nor statistical or usage data) is transferred to anywhere except the chosen server. No Google Calendar or account required.

ICSx⁵ is being developed by open source enthusiasts who have also developed DAVx⁵, the award-winning open-source CalDAV/CardDAV sync adapter for Android.

Our homepage, including configuration info and FAQ: https://icsx5.bitfire.at/
For help and discussion please visit our forums: https://icsx5.bitfire.at/forums/
Updated on
Mar 1, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Data is encrypted in transit
Data can’t be deleted
Committed to follow the Play Families Policy

Ratings and reviews

261 reviews
Carlos Munoz
November 10, 2021
It works at first but after awhile the sync stops and can't resolve the name. And the iCal events have changed but it doesn't reflect on calender in my Phone. 😭, Update - 11/2/21. Now my autosync is disabled with no reason. So I have to make manually update it. - Update 11/10/21 - I followed the instructions to make sure the app doesn't go to sleep but events that are on my calender will have been updated with new date and time won't reflect thru the app. Lost a star for it.
3 people found this review helpful
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bitfire web engineering
March 5, 2022
please update to version 2.0. Maybe it works better for you. please make sure you have enough disk space, otherwise the sync can be blocked by the system
Barney Fife
October 3, 2022
This is a great app that works very well for me. If it tries to run a scheduled sync when I don't have internet signal, it gives an error notification (a feature, not a bug), but when I'm back in signal I sync it manually and it works perfectly again.
3 people found this review helpful
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Aric Crosson Bouwers
June 16, 2023
This is working really well for me. There is one thing I would like to see added though. I like the option for setting a default alarm prior to each event, but to subscribe to some calendars that have wayyyy to many calendar events to want an alarm for each, but I do want to be notified of them. If there was an option for a silent popup that could easily be dismissed, and that would let me know something is coming up but didn't make all sorts of noise, that would be ideal.
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What's new

2.1.1: fixed a problem with migration


* Android 13 compatibility
* [NEW] Add custom alarms to events that don't contain an alarm when downloaded
* Subscriptions are now handeled in our own database
* Subscriptions can now be backed up via Android Backup API
* Raise importance level of notification when unknown certificates are encountered
* improved handling of events that come from the server containing errors