package icon

LeanType

Privacy-focused keyboard with AI enhancements
New in version 4.2.6
- Floating Window Layout Fix: Eliminated persistent bottom dead space in floating mode by intercepting framework insets, toggling fitsSystemWindows, and performing clean deferred re-measurement.
- Flavor Consolidation: Fully merged standardfull into standard, delivering a streamlined two-flavor lineup (standard & offline) with zero sensitive permission overhead.
- Input Compatibility & Dialer Search: Fixed TYPE_NULL fields in generic search bars and dialer apps by properly respecting explicit sh
LeanType is a privacy-conscious, customizable open-source Android keyboard. Based on the robust foundations of AOSP and HeliBoard.
LeanType (Standard) offers a hybrid experience: a private, secure offline core for everyday typing, with powerful AI capabilities available whenever you choose to enable them.

Key Features:

  • AI Proofreading & Translation: Instantly fix grammar, rewrite text, or translate sentences using powerful AI. Choose between Gemini, Groq, or OpenAI-compatible backends.

  • Floating Keyboard: Detach the keyboard into a draggable window for seamless multitasking and improved accessibility.

  • Clipboard Power-tools: Search your clipboard history directly, enjoy visual previews, and undo accidental clip deletions.

  • Screenshot Suggestions: Instantly paste recently taken screenshots directly from your keyboard suggestions.

  • Custom AI Keys: Program up to 10 customizable toolbar keys with distinct AI behaviors (e.g., #editor, #proofread, #toneshift) to quickly transform your text on demand.

  • Touchpad Mode: Swipe up on the spacebar to control your screen cursor like a trackpad.

  • Split Toolbar & Suggestions: Dual-layer interface allowing simultaneous access to suggestions and utility keys.



Standard Features:

  • Multilingual typing with auto-correction

  • Import dictionaries from Gboard/Google

  • Fully customizable themes (Colors, backgrounds, Day/Night integration, Material You dynamic colors)

  • Customizable special layouts (NumPads, Symbol layouts)

  • Glide typing support (Requires external library)

  • One-handed mode and Split keyboard

  • Backup & restore for all your settings and learned words



Privacy Policy:
We believe your keyboard shouldn't spy on you. LeanType is fully open-source and respects your data. While this version includes Internet permission to support AI features, network access is only ever used if you explicitly provide an API key and actively trigger an AI request. Your keystrokes are never logged or sent anywhere without your direct action.

Built with ❤️ by LeanBitLab.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.2.6 (4206) suggested Added on Sep 22, 2026

    arm64-v8a armeabi-v7a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • android.permission.READ_USER_DICTIONARY
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • android.permission.WRITE_USER_DICTIONARY
    • com.leanbitlab.leantype.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 10 MiB PGP Signature | Build Log

  • New in version 4.2.5
    - Native Floating Window: Replaced overlay window with native IME window architecture (eliminating SYSTEM_ALERT_WINDOW permission), bottom control bar, and persistent mode memory.
    - Privacy Hardening: Removed READ_CONTACTS and REQUEST_INSTALL_PACKAGES permissions; unified GitHub release viewing across flavors in preparation for v4.2.6 merger.
    - App Profiles & Typing Compatibility: Added per-app Allow Symbol Composing (fixing Tasker underscore variables) and Force Non-Incognito toggles; fixed bro
  • Version 4.2.5 (4205) - Added on Sep 21, 2026

    arm64-v8a armeabi-v7a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • android.permission.READ_USER_DICTIONARY
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • android.permission.WRITE_USER_DICTIONARY
    • com.leanbitlab.leantype.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 10 MiB PGP Signature | Build Log

  • New in version 4.2.4
    - Hardware Keyboard Overhaul: Fixed suggestions with physical keyboards, resolved NumLock composition bypass, numpad keys, and dead-key crashes.
    - App Profiles: Added offline per-app compatibility configuration (direct commits, auto-space, per-app auto-correct toggle).
    - Calibrated Cursor Gestures: Eliminated cursor jumping and calibrated spacebar/touchpad swipe speeds.
    - Settings Overhaul: Separated Suggestions and Correction with coordinated preset sliders and drawers.
    - UI Polish & Stability:
  • Version 4.2.4 (4204) - Added on Sep 20, 2026

    arm64-v8a armeabi-v7a

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • android.permission.READ_USER_DICTIONARY
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • This app can appear on top of other apps
      This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • android.permission.WRITE_USER_DICTIONARY
    • com.leanbitlab.leantype.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 10 MiB PGP Signature | Build Log