Sync events across multiple local device calendars automatically.
About this app
Calendar Sync automatically copies events from one local calendar to another on your device. When an event appears in your source calendar, a corresponding event is created in your target calendar using a name you choose.
Perfect for sharing availability across personal and work calendars, or keeping multiple calendars in sync without manual entry.
Features: - Select any local device calendar as source or target - Customize the synced event name (e.g., "Busy") - Original event title is preserved in the description - Sync runs automatically in the background at your chosen interval - Changes to already-synced events are detected and propagated - Deletions in the source calendar are mirrored to the target
No account required. All data stays on your device.
Licensed under GPL-3.0-only, by Henrique Couto.
What's New in v1.9.5
Imported from the F-Droid repository index.
Version history
Jul 10, 2026 · 18.7 MB · Android API 24–36 · code 393
Imported from the F-Droid repository index.
SHA-256 144a1853c95af93518b76e6bcf35bbc2def4df4018d80f21caa6e359c944b3a4
Jul 10, 2026 · 17.3 MB · Android API 24–36 · code 392
Imported from the F-Droid repository index.
SHA-256 9f68ef161d5dc2729b6fc20c2221ee76764f79d226be718dadaf52482ed7a7bb
Jul 10, 2026 · 14.9 MB · Android API 24–36 · code 391
Imported from the F-Droid repository index.
SHA-256 b6aed5c95d49e443f1c6609671d4b623755bbe1656837fa5bc28923a3cd46607
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 dev.henriquecouto.calsync 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, 1.9.5 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall CalSync 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 CalSync, and a listing is removed when the evidence for it stops holding up.
Get CalSync
Every source we list for dev.henriquecouto.calsync 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
144a1853c95af93518b76e6bcf35bbc2def4df4018d80f21caa6e359c944b3a4
Signing certificate
1b55b0fafa174445bc91a07a129e3582d9365e16882ba74a70234db7b0fca8e5
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.