Chat
About this app
Chat and transfer files with others on your WiFi network.
KouChat is a serverless LAN chat application for the desktop and Android.
With KouChat you can chat and send files to other KouChat users on the same local area network. It's intended to be used on your wireless network at home, the coffee shop, work place or similar, and does not require any setup, Internet connection or servers to function.
See our user guide for more information about how to use KouChat.
Notes:
* KouChat does not see users across the Internet or the cellular network. * Some devices have unreliable network when the screen is off. * Not all networks have multicast enabled, which is a technology required for KouChat to work. * See at the bottom for tips if you are having problems.
Features:
* Group chat with all the connected users * Private chat with any user * Choose your own nick name * Set the topic of the group chat * Rich notifications * See who is currently writing * Send and receive files * Use away mode when you don't want to be disturbed * Choose the color to use for your own messages, and info messages * Send messages in any language supported by Unicode.
Licensed under GPL-3.0-only, by Christian Ihle.
What's New in v1.1.1
Imported from the F-Droid repository index.
Version history
Aug 10, 2018 · 2.5 MB · Android API 16–27 · code 16
Imported from the F-Droid repository index.
SHA-256 7b1a0abc134b35ae3a74c03c3109c56f5dbf35262b8bd04877be090652c4c29f
Sep 5, 2016 · 1.8 MB · Android API 16–24 · code 15
Imported from the F-Droid repository index.
SHA-256 38499037d0a08fa31ac8ee079a879f99c8dd52832ddc61d9c7276e0c42fb25f8
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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 net.usikkert.kouchat.android 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, 1.1.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall KouChat 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 KouChat, and a listing is removed when the evidence for it stops holding up.
Get KouChat
Every source we list for net.usikkert.kouchat.android 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
7b1a0abc134b35ae3a74c03c3109c56f5dbf35262b8bd04877be090652c4c29f
Signing certificate
3144c84c3d927fdc706ec651aeb7936fcf02921aafb244919a9b4100ea617cdb
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.