Subscribe to Webcal (.ics) calendars
About this app
ICSx⁵ allows you to add/subscribe and manage external (Webcal) and local (i.e. Dropbox, adb push etc) iCalendar/.ics files on your Android 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.
* Subscribe to Webcal feeds (= synchronize at regular intervals) e.g. shared calendars from icloud.com * Subscribe to local .ics (iCalendar) calendar files * Allows to open webcal:// and webcals:// URLs, e.g. from your Web browser * Seamless integration to other calendar apps * Set a sync schedule * Intelligent update checker to save bandwidth * Authentication and HTTPS supported
Licensed under GPL-3.0-only, by bitfire web engineering.
What's New in v2.4.3
Imported from the F-Droid repository index.
Version history
Dec 18, 2025 · 15.3 MB · Android API 23–36 · code 92
Imported from the F-Droid repository index.
SHA-256 64eca16131b45c5072d9303ba5d74db27eb9ff9d934621bc2001bba3af8389ac
Sep 20, 2025 · 14.9 MB · Android API 23–36 · code 91
Imported from the F-Droid repository index.
SHA-256 1cb7124cf0b20934cf4f88b58e3f0638f77e5e88f4331d59fa7ddda0a9c21153
Sep 8, 2025 · 16.4 MB · Android API 23–36 · code 89
Imported from the F-Droid repository index.
SHA-256 fedcf8d06a3c759d427f7d1519d17a504b911111b97133dd7fd1e21eb1ee7483
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be at.bitfire.icsdroid is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.4.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall ICSx⁵ first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of ICSx⁵, and a listing is removed when the evidence for it stops holding up.
Get ICSx⁵
Every source we list for at.bitfire.icsdroid is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
64eca16131b45c5072d9303ba5d74db27eb9ff9d934621bc2001bba3af8389ac
Signing certificate
6fa77c06ff23d17c01886fdf4b289367b63ee5fa327b93b9b08cd658ce83f568
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.