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
Sep 15, 2025
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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.
6 people found this review helpful
Daniel BP
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March 7, 2024
Does exactly what it was designed to. The only minor issue is that it raises a notification immediately after failing to sync due lack of internet. Ideally it should wait for the connection and then sync silently. Only warn the use if the connection failed with Internet on.
2 people found this review helpful
Barney Fife
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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.