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Whaleness — A Third-Party Mobile Client for DeepSeek Harness

Native Android and iOS apps with core business logic shared through Kotlin Multiplatform.

Connect to DeepSeek Harness through Mobile Gateway to access workspaces, live conversations, Agent traces, plugins, scheduled tasks, and files from your phone, tablet, or foldable.

Website: Whaleness

  

Whaleness is an independently developed third-party native mobile client for DeepSeek Harness. Both Android and iOS apps use Kotlin Multiplatform (KMP):

• shared is the source of truth for shared business state, including protocol handling, state machines, reducers, projections, and synchronization.
• androidApp implements the Android app with Kotlin, Jetpack Compose, and OkHttp.
• DeepSeekHarnessMobile builds the iOS interface with SwiftUI/UIKit and accesses shared logic through a Kotlin/Native framework.

Both apps connect to Harness over WebSocket through dsh-plugin-mobile-gateway. With the gateway’s experimental WebRTC option enabled, paired clients prefer two native RTC data channels and explicitly fall back to WebSocket when negotiation fails. Settings shows the selected connection method. See App integration and validation. Networking, secure storage, files, images, lifecycle handling, and background execution use native platform APIs. Business rules are consolidated in shared/commonMain wherever practical.

• iOS: Join the TestFlight beta. Supports iPhone and iPad running iOS / iPadOS 16.1 or later.
• Android: Download an APK from GitHub Releases. Requires Android 7.0 (API 24) or later. In-app update checks prefer the accelerated download source and verify downloaded packages.
• Desktop host: Run DeepSeek Harness with dsh-plugin-mobile-gateway 0.11.1 or later installed and enabled. AppRelease/release-info.json defines the required minimum version.
• Voice input: Enable the official Voice Input plugin in the desktop host's Plugins section, finish model download and initialization, and grant microphone access on the mobile device.

Join the Whaleness beta WeChat group 2 to share feedback, discuss your experience, and get support. Scan with WeChat, or save the image and recognize it in WeChat.

Updated on October 28, 2026. The original image states that the code is valid before November 4, 2026. If it has expired, check the product page for the latest group QR code.

Android and iOS each have their own native UI and platform integrations. Features and interactions are being aligned, while some system-level behavior differs between platforms.

• Agent teams: View members, switch between the lead and member conversations, and inspect shared tasks with status, ownership, and links to the relevant conversation.
• File uploads: Choose files in the conversation, follow upload progress, remove attachments, or retry a failed upload. Sent and generated files appear as cards that can be opened or downloaded.
• Text selection and tables: Open a dedicated text-selection screen to select, select all, and copy without losing your conversation position. Read Markdown tables full screen, rotate them, copy them, or export CSV; narrow tables fit the available width and wide tables scroll horizontally.
• Chat history and storage: Cache conversations locally and search common conversations offline. Review storage used by images, chat history, file previews, and temporary files, and clear local caches by category. Restore history when returning to a session and load earlier messages progressively.
• iPhone Duo and wide screens: Adapt home-screen columns, safe areas, the composer, and the animated background to folding, unfolding, and rotation. Wide conversations provide a persistent sidebar with sessions grouped by workspace; navigation and task controls adapt to the available space.
• iOS 16.1 compatibility: The deployment target is now iOS 16.1, with compatible interfaces for older systems. System-dependent effects and features remain subject to the iOS version and device capabilities.
• Refined native interactions: Improve Android frosted-glass menus, session renaming, and swipe navigation, plus iOS background reconnection, file browsing, and image compatibility.

• Live native conversations: Stream WebSocket events with Markdown, code, reasoning, tool calls, tool results, and image attachments.
• Voice and text input: Switch to a dedicated hold-to-talk area, release to transcribe into an editable draft, or slide up to cancel. Transcription uses the voice input capability on the host.
• History, queues, and commands: Merge paginated history with the live tail and deduplicate events. View and edit queued messages, and use slash commands provided by the host. On iOS, loading older messages preserves the current reading position.
• Agent traces: Inspect User, Assistant, and Tool events, including arguments, results, schemas, token usage, and timing.
• Interactive Agent workflows: Respond to Human Questions and tool approval requests, including submission, cancellation, rejection, and one-time approval.

• Multiple hosts and sessions: Save and switch between Gateway hosts with separate credentials. Browse, create, and switch workspaces; search, create, switch, and archive sessions.
• File cards and previews: Open file cards directly from conversations, browse remote directories, and download files in verified chunks. Preview PDFs, images, and code, or share and open files with system apps.
• Markdown source / preview: Browse code with syntax highlighting, line numbers, and horizontal scrolling for long lines. Switch Markdown files between source and rendered views, retaining each view's reading position.
• Plugin management: Browse official and installed plugins, details, and runtime status. Install, enable, disable, and configure plugins where supported by the host.
• Scheduled tasks: Browse tasks created in conversations, search and filter them, expand their rules, next execution time, and delivery information, and edit or delete tasks.
• Session and default settings: Manage Agent presets, providers/models, reasoning effort, and Harness Agent permissions: read-only, workspace-write, and danger-full-access. These control the Agent on the host, not the phone's local filesystem.

• Tablets and foldables: Layouts adapt to the available window size on iPad, Android tablets, and foldables. Wide home screens use columns, conversations retain a comfortable reading width, and file previews resize with the window. Android layouts account for the folding hinge area.
• Themes and text size: Light and dark appearances, plus system or manually adjusted app text size, with Harness's ocean, grid, and whale visual identity.
• iOS Live Activities and notifications: Follow task progress, approvals, and completion on the Lock Screen and supported Dynamic Island devices, with system notifications for important updates.
• Secure device pairing: Scan a WebUI QR code or enter pairing details manually. Long-lived credentials are stored in platform secure storage.
• Mobile lifecycle handling: Neither app intentionally closes a healthy connection when backgrounded. Connections recover on returning to the foreground after a disconnect; manual disconnects do not trigger automatic reconnection. Android runs a foreground service only during active Agent turns. iOS uses the limited background execution time granted by the system and does not guarantee an indefinitely open WebSocket.

Latest iOS product screenshots: the 1.7.10 image set was captured on October 22–23, 2026; the iPhone Duo set was captured on October 26, 2026. The interface shown is Chinese. Product screenshot sources · Duo screenshot sources.

Unfolded landscape home	Landscape home background
Landscape settings	Landscape conversation
Expanded navigation sidebar	Unfolded portrait home

Agent team members	Shared team tasks	File and image picker
Dedicated text selection	Files in a conversation	Bundled release notes
Local storage and cache categories	Hold-to-talk input	File attachment in the composer

Earlier screenshots: iPad, previews, settings, and pairing

Screenshots show the iOS app with Chinese UI; Android implements the corresponding information architecture and workflows with Jetpack Compose. The voice, file, text-size, and iPad screenshots were captured on October 16, 2026, using version 1.7.6. See screenshot sources.

Voice Input, File Previews, and Text Size

Hold to talk Release to transcribe, slide up to cancel	PDF preview Open files directly from a conversation	Text size Follow the system or adjust manually

View the slide-up-to-cancel state

iPad and Larger Screens

Wide home screen Workspaces and sessions side by side	Tablet conversations Comfortable content width and composer
File previews Keep the conversation in context	Voice input on iPad Recording feedback adapts to the window

Core Workflows

Home Workspaces and recent sessions	Conversation Markdown, code, and tool results	Agent trace Timing overview and event timeline

Default Settings

Settings Deployment defaults and Gateway status	Agent presets Tools, prompts, and capabilities	Default model Provider, model, and reasoning effort

Plugins and Scheduled Tasks

Plugin management Browse details and enabled state	Scheduled tasks Inspect schedules and execution status

More screens: workspaces, trace details, and device pairing

Workspace Actions and Trace Details

Switch workspaces Access different projects	Choose a directory Browse and create workspaces	Trace details Summary, tokens, and content preview

Light Mode, Dark Mode, and Pairing

Light-mode pairing Scan a QR code or enter details	Dark-mode pairing Native dark appearance	Dark-mode conversation Reading, code, and composer

                         DeepSeek Harness
                                │
                  dsh-plugin-mobile-gateway
                                │
                             WebSocket
                ┌───────────────┴───────────────┐
                │                               │
     Android OkHttp Transport          iOS URLSession GatewayClient
                │                               │
       KMP Gateway Runtime             Swift Router / KMP Adapter
                │                               │
                └───────────────┬───────────────┘
                                │
                    KMP shared / commonMain
            Protocol · Store · Reducer · Projection
       History Sync · Question/Approval · Workspace Files
                ┌───────────────┴───────────────┐
                │                               │
       Jetpack Compose                     SwiftUI / UIKit
          Android UI                          iOS UI

• protocol/: Gateway DTOs, JSON representations, and wire decoding.
• gateway/: Platform transport interfaces, pairing, authentication, request correlation, reconnection, and event backpressure. Android uses the full shared runtime, with OkHttp providing the underlying transport.
• domain/: Reducers for sessions, questions, approvals, and session control.
• projection/: Incremental conversation and trace projections.
• sync/: History pagination, live-tail merging, and deduplication.
• facade/: Coarse-grained stores, intents, and events for Swift/Kotlin adapters, plus workspace paths, chunk ordering, progress, and SHA-256 verification.

The shared module does not depend on Compose, SwiftUI, Android Framework, or Apple UI frameworks. iOS reuses shared stores, reducers, projections, and file state machines. Its Swift GatewayClient still owns WebSocket connections and reconnection, forwarding events into the shared module through an adapter; iOS does not yet use the full KMP Gateway Runtime.

Each platform handles secure storage, image processing, temporary files, system sharing/opening, and application lifecycle. The shared module owns the remote file protocol, state transitions, chunk consistency, and integrity checks without accessing platform filesystems directly.

.
├── shared/                         # Kotlin Multiplatform business logic
│   └── src/
│       ├── commonMain/             # Protocol, state machines, projections, sync, facades
│       └── commonTest/             # Cross-platform unit tests
├── androidApp/                     # Native Android app (Jetpack Compose)
│   └── src/
│       ├── main/                   # App code and platform integrations
│       ├── test/                   # JVM tests
│       └── androidTest/            # Device tests
├── DeepSeekHarnessMobile/          # Native iOS app (SwiftUI/UIKit)
├── DeepSeekHarnessMobileTests/     # iOS XCTest tests
├── DeepSeekHarnessMobile.xcodeproj
├── Docs/                           # Research, KMP migration, and validation
└── Design/                         # Design specifications and artwork

• Java 17.
• DeepSeek Harness with dsh-plugin-mobile-gateway 0.11.1+ enabled.
• A simulator, emulator, or physical device that can reach Mobile Gateway.

• Android Studio or Android SDK Command-line Tools.
• Android SDK Platform 36 (compileSdk / targetSdk).
• An Android 7.0 (API 24) or later device or emulator.

• macOS and Xcode 26+ with the iOS 26 SDK to compile APIs such as Liquid Glass. The app's deployment target is iOS 16.1.
• An iOS 16.1+ simulator or physical device.
• Android SDK: the Xcode build phase invokes Gradle to compile the KMP framework.
• An available Metal toolchain, which the build phase locates automatically.

1. Set up Java 17 and point ANDROID_HOME or ANDROID_SDK_ROOT to your Android SDK.

2. Build a Debug APK from the repository root:

   ./gradlew :androidApp:assembleDebug

3. Install it on a connected device or emulator:

   ./gradlew :androidApp:installDebug

4. Launch DshMobile and scan the pairing QR code from WebUI, or enter pairing details manually.

The Debug APK is generated at:

androidApp/build/outputs/apk/debug/androidApp-debug.apk

To let an Android emulator access the host's 127.0.0.1:3080, first run:

adb reverse tcp:3080 tcp:3080

1. Set up Java 17 and the Android SDK.
2. Open DeepSeekHarnessMobile.xcodeproj in Xcode.
3. Select the DeepSeekHarnessMobile scheme and your target device.
4. Build and run. The Build KMP Framework phase automatically selects and compiles the matching Kotlin/Native framework.
5. Scan the WebUI pairing QR code in the app, or enter pairing details manually.

You do not need to build the framework manually first. To build only the Apple Silicon iOS Simulator framework:

./gradlew :shared:linkDebugFrameworkIosSimulatorArm64

1. Install or upgrade dsh-plugin-mobile-gateway in DeepSeek Harness (minimum 0.11.1), then fully exit and restart dsh web:

   dsh plugin --profile web add dsh-plugin-mobile-gateway@latest

2. Open the Mobile Devices panel in WebUI and enable mobile connections and device authentication.

3. Make sure the WebSocket endpoint is reachable from your mobile device or simulator.

4. Generate a one-time pairing QR code/token and authenticate in the Android or iOS app.

5. Return to the home screen, confirm that Gateway is connected, then choose a workspace and session.

Common endpoints:

Run Android unit tests, lint, and the APK build:

./gradlew \
  :androidApp:testDebugUnitTest \
  :androidApp:lintDebug \
  :androidApp:assembleDebug

Run the shared Kotlin/Native tests on Apple Silicon macOS:

./gradlew :shared:iosSimulatorArm64Test

With an Android device or emulator available, run device tests:

./gradlew :androidApp:connectedDebugAndroidTest

For iOS tests, select the DeepSeekHarnessMobile scheme in Xcode and choose Product → Test. The build phase links DeepSeekHarnessShared.framework for the selected architecture automatically.

Some linked technical documents are currently available in Chinese.

• Harness / WebUI features and protocol research
• Mobile design specification
• Third-party notices

The following documents record the KMP migration and Android implementation. For the current state, refer to this README and the source code:

• KMP development guide
• Android Gateway stage 12 validation
• Android UI stage 13 validation

Whaleness is under active development. The KMP shared module and native Android and iOS apps are implemented. Protocol support, platform consistency, and the mobile experience continue to evolve alongside DeepSeek Harness and Mobile Gateway.

This is an independently developed third-party client for DeepSeek Harness.

Both apps' About screens use AppRelease/release-info.json and AppRelease/release-notes.md. The JSON version must match the app version; minimumGatewayVersion specifies the required minimum Mobile Gateway plugin version. Markdown contains the release notes for that version. Apps load these bundled resources locally without fetching the text over the network.

The KMM dual-release skill writes reviewed release notes and synchronizes the resource version before compilation. It verifies that the resources in the APK, AAB, and iOS bundle match the source files, and restores resources and version files if packaging fails. Changes to release notes require rebuilding the apps; editing only the release output directory does not update bundled content.

The Build Metal Library phase runs scripts/build_metal_library.sh, locates an installed Metal toolchain, and writes default.metallib into the app bundle. It clears Android Studio's injected TOOLCHAINS and SDKROOT only in its subprocess, while explicitly preserving the current iOS SDK and deployment target. This avoids false missing-Metal-toolchain errors caused by forcing XcodeDefault.

Android checks https://download.whaleness.cc/latest.json first and falls back to GitHub Releases if the request fails or the configuration is invalid. The schemaVersion: 1 configuration includes version, versionCode, packageName, downloadUrl, size, and sha256, with optional githubDownloadUrl and releaseNotes. Downloads accept only configured trusted accelerated-download domains and this project's GitHub URLs. If the accelerated source fails, the app switches to the fallback while verifying package size, SHA-256, version, package name, and signature against the same configuration.

Publishing uploads an immutable versioned APK before updating the root latest.json. Update manifests should bypass CDN caching; APK files may be cached. When no newer build is found, no GitHub request is made. Startup checks remain silent, while manual checks in Settings display their result.

Run python3 scripts/configure_r2_release.py to save S3 object read/write credentials for the configured bucket in ~/.config/whaleness/r2-release.json with permissions 600. sh scripts/r2_release.sh --check only verifies connectivity. sh scripts/r2_release.sh --prepare <release-directory> generates a manifest; --publish <release-directory> performs the remote publication. The S3 SDK is installed in the isolated build/r2-tools environment.

When local configuration exists, the KMM dual-release skill publishes automatically: validate local packages, upload an immutable APK whose filename includes the build number, verify both the remote object and public download, then conditionally update latest.json. A failed upload can be retried with the same release directory without rebuilding. Set R2_UPLOAD=0 for local packaging only. Full upload tests may generate R2 read requests; the initial connection check does not modify remote objects.