Phone

ICSx⁵ – Subscribe to calendars

Productivity • bitfire web engineering • ⭐ 4.40 • 10,000+

Version Varies with device Everyone

Screenshots

Permissions Explained 12 permissions requested View details

This app requests 12 permissions. The table below explains what each permission may allow and what users should review before installing.

Status	Permission	What it means	Why it may be used	User safety note
ℹ️ Review	Find Accounts On The Device find accounts on the device	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Read Calendar Events Plus Confidential Information read calendar events plus confidential information	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Add Or Modify Calendar Events And Send Email To Guests Without Owners' Knowledge add or modify calendar events and send email to guests without owners' knowledge	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Read The Contents Of Your Usb Storage read the contents of your USB storage	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	View Network Connections view network connections	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Create Accounts And Set Passwords create accounts and set passwords	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Full Network Access full network access	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Read Sync Settings read sync settings	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Run At Startup run at startup	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Prevent Device From Sleeping prevent device from sleeping	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Toggle Sync On And Off toggle sync on and off	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.
ℹ️ Review	Read Sync Statistics read sync statistics	This is an Android permission or app-specific permission requested by the app.	The app may use this permission for features related to its category, device support, background behavior, storage, connectivity, or system integration.	Review this permission before installing, especially if it does not match the app’s expected purpose.

About ICSx⁵ – Subscribe to calendars

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/

What ICSx⁵ – Subscribe to calendars Is Used For

ICSx⁵ appears to be a calendar subscription and sync utility for Android. Based on the metadata, it is used to add external iCalendar and Webcal feeds, then import those events into a user’s device calendar app. Common examples include public holidays, sports schedules, school timetables, and shared calendars that publish .ics updates.

The app is focused on one-way calendar synchronization rather than full calendar editing. It may be useful if you want subscribed calendars to stay up to date automatically, with support for webcal:// links, local .ics files, HTTPS, and authenticated feeds. The permission list also suggests it needs calendar access, network access, and background sync controls so it can refresh subscriptions and keep events current without manual importing. Based on the metadata, this is a phone app for people who use calendar apps regularly and want external schedules to appear alongside their existing events.

Common uses

Subscribe to Webcal or .ics calendar feeds
Import events from shared or public calendars
Sync schedules such as holidays, sports, or class timetables
Open webcal links from a browser on Android
Update subscribed calendars on a schedule
Integrate imported events into your existing calendar app
Use local .ics files when you already have a calendar export

Best for:

calendar subscriptions shared schedules phone users productivity background sync

Related tags

App Details

Package:
at.bitfire.icsdroid

Category:
Productivity

Developer:
bitfire web engineering

Version:
Varies with device

Updated:
Dec 16, 2025

Min Android:
Varies with device

Age Rating:
Everyone

Contains Ads:
No

In-App Purchases:
No

Official Listing

Official listing available on Google Play
Package name: at.bitfire.icsdroid
Age rating: Everyone

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How to Download ICSx⁵ – Subscribe to calendars

If this app is not hosted directly on APKApps official link, then for the safest and most up-to-date version, install it from its official Google Play listing.