Chanawoo is an unofficial fork of Chance, the imageboard browser built with Flutter for iOS and Android.

This fork adds owo.vg posting integration, offline thread downloading (from Lystus/chan), and ships under a separate Android package ID so it can be installed alongside the official Chance app.

Upstream development continues on the original repository. Chanawoo tracks that codebase and layers fork-specific changes on top. Thread downloading, CopyParty sync, alternative gallery layout, and appearance options are integrated from Lystus/chan.

• owo.vg integration — post to 4chan through owo.vg (WebSocket posting, captcha UI, Gold Pass login, and related settings).
• Thread downloading — save full threads locally for offline reading, with progress tracking and archive detection.
• CopyParty sync — optional CopyParty server backend for downloaded thread media.
• Kuroba import/export — import threads from Kuroba backups; export and bulk-manage downloaded threads.
• Hide/unhide images — per-image hide filter by MD5.
• Alternative gallery (quilt layout) — optional quilt-style gallery and updated media viewer (Settings → Appearance).
• Side-by-side install — different package ID from Play Store / upstream Chance, so both apps can be installed at once.
• Same gallery album and deep links as Chance — saved images go to the Chance gallery album by default, and chance:// deep links open in Chanawoo.
• One-time app data migration — on first launch, if Chanawoo has no settings yet and a co-installed com.moffatman.chan app exists with the same signing key, Hive data is copied automatically. Play Store Chance uses a different key, so migration works for fork / sideload builds only, not live sharing with the official app.

All core Chance features are included, plus fork-specific posting support:

• Multi-column layout for larger screens
• WEBM playback and conversion
• Pick images through in-app web search
• Media gallery view
• Save threads, posts, and attachments to a local collection
• Automatically aligns the captcha slider
• Gestures to navigate through replies
• Switch between multiple browsing tabs
• Optional and automatic adjustments for mouse usage
• Regular-expression filters to hide or highlight posts
• Support for archives to access deleted threads or search for posts
• Thread watcher to check for replies
• owo.vg posting for supported boards
• Offline downloaded threads with CopyParty and Kuroba support

APKs are published on the fork releases page.

Download the APK that matches your device:

• app-arm64-v8a-release.apk — most phones
• app-armeabi-v7a-release.apk — older 32-bit ARM devices
• app-x86_64-release.apk — emulators

If you previously installed Chanawoo v123 with empty data, clear Chanawoo app storage (or uninstall and reinstall) while a compatible com.moffatman.chan build is still installed, then launch Chanawoo again to trigger migration.

Chanawoo releases are Android-focused. For iOS, use upstream Chance beta testing from the official project.

1. Install Flutter
2. Clone and enter this repository:

git clone https://github.com/4cuck/4chan.git
cd 4chan

3. Fetch dependencies:

flutter pub get

4. (Optional) Change the package name (find-and-replace com.chanawoo.app with your own identifier) if you want your own signing keys for distribution.
5. Run build_runner to generate required Dart code:

flutter pub run build_runner build

6. Copy local build secrets (gitignored):

cp .env.example .env

Edit .env and set CHANCE_UA_SECRET to the same value as MEGUCA_CHANCE_UA_SECRET on your Meguca server (awoo.cf). Android builds load this automatically via Gradle; no --dart-define needed. 7. Build a release APK for Android:

./scripts/build_release_apk.sh

Or equivalently: flutter build apk --split-per-abi --release (Gradle reads .env on its own). For iOS/macOS/desktop, use ./scripts/flutter instead of plain flutter so the same .env values are passed through. 8. To build for iOS (Mac and Xcode required):

./scripts/flutter build ios --release

9. For development with a connected device:

flutter run

On Android, flutter run also picks up .env through Gradle.

Chance upstream is developed on Flutter master; if you hit build errors, try flutter channel dev or flutter channel master.

By default, the app is set up to browse a test server. In app settings, edit your content preferences to browse a different imageboard.

To comply with Apple App Store guidelines, not all settings are modifiable in the app.

Tap the status bar.

Hold on the post counter at the bottom-right.

For Chanawoo / owo.vg issues, open an issue on 4cuck/4chan.

For upstream Chance bugs and features, use the moffatman/chan tracker or the meta imageboard linked from Chance settings.

Based on Chance, licensed under version 3 of the GNU General Public License. See LICENSE for more information.