LeanType 4.3.1
Private, customizable open-source keyboard with smart productivity tools
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About LeanType
LeanType is a fast, privacy-focused, and highly customizable open-source keyboard for Android, built on the solid foundations of AOSP and HeliBoard. Designed for smooth typing, rich ergonomics, and modular productivity, LeanType gives you complete control over your keyboard experience with zero data tracking.
Privacy & Offline First:
o 100% Open Source: No telemetry, no ads, and no background tracking.
o Strict Data Privacy: Your keystrokes and data remain entirely on your device.
o Zero Sensitive Permissions: Operates without contacts, location, or intrusive permissions.
? Ergonomics & Fluid Typing:
o Gesture Typing: Smooth swipe typing with adjustable sensitivity and preview.
o Multilingual Support: Multi-language typing with auto-correction, suggestions, and Gboard dictionary import.
o Trackpad Cursor & Text Editing: Swipe across the spacebar or use the dedicated DPAD text editing panel for precision cursor movement and selection.
o Floating Keyboard: Native, draggable, and resizable floating window for comfortable multitasking without overlay permissions.
o One-Handed & Split Modes: Optimized layouts for phones, foldables, and tablets.
o Hardware Keyboard Support: Full candidate selection and auto-correction for external Bluetooth/USB keyboards.
Deep Customization & Sound Packs:
o Material You & Themes: Dynamic system color matching, dark/light themes, and custom background wallpaper with blur.
o Key Ergonomics: Independent corner radius controls for normal, function, and action keys, plus adjustable key gaps and padding scales.
o Tactile Key Audio: Built-in low-latency sound engine featuring Cherry MX, Vintage Typewriter, Retro CRT, Soft Velvet, and custom sound pack import.
? Clipboard & Productivity:
o Smart Clipboard Manager: Search clips in real-time, edit text directly in the toolbar, pin favorites, and 5-second undo for deletions.
o Inline Math Solver: Type equations directly (e.g., 25*4= or 150-20%=) for instant calculation in the suggestion strip.
o Dynamic Text Expander: Expand text shortcuts with dynamic variables like date, time, and clipboard content.
o Screenshot Suggestions: Instant 1-tap sharing and text extraction for recently captured screenshots.
o Modular Backup & Restore: Selectively export and import your layouts, themes, dictionaries, and clipboard history.
Modular Input & Plugins:
o Voice Typing: Accurate on-device speech-to-text powered by Whisper models.
o Handwriting Recognition: Draw characters and symbols directly on an in-keyboard canvas.
o Camera & Screenshot OCR: Extract text from real-world documents or screenshots with an in-keyboard viewfinder.
o In-Keyboard Translation: Translate text instantly via offline models or cloud translation.
Smart AI Tools (Completely Optional):
o On-Demand Proofreading: Fix grammar, adjust tone, or rephrase text when you choose to use it.
o Flexible Providers: Connect to Google Gemini, Groq, OpenAI, or self-hosted local LLMs (Ollama, LM Studio, LocalAI).
o Custom AI Keys: Program quick toolbar buttons with custom prompt instructions.
o Fully Opt-in: Network access is only used if you provide an API key and explicitly trigger an AI request.
Built with ? by LeanBitLab.
License: GPL-3.0-only
Privacy & Offline First:
o 100% Open Source: No telemetry, no ads, and no background tracking.
o Strict Data Privacy: Your keystrokes and data remain entirely on your device.
o Zero Sensitive Permissions: Operates without contacts, location, or intrusive permissions.
? Ergonomics & Fluid Typing:
o Gesture Typing: Smooth swipe typing with adjustable sensitivity and preview.
o Multilingual Support: Multi-language typing with auto-correction, suggestions, and Gboard dictionary import.
o Trackpad Cursor & Text Editing: Swipe across the spacebar or use the dedicated DPAD text editing panel for precision cursor movement and selection.
o Floating Keyboard: Native, draggable, and resizable floating window for comfortable multitasking without overlay permissions.
o One-Handed & Split Modes: Optimized layouts for phones, foldables, and tablets.
o Hardware Keyboard Support: Full candidate selection and auto-correction for external Bluetooth/USB keyboards.
Deep Customization & Sound Packs:
o Material You & Themes: Dynamic system color matching, dark/light themes, and custom background wallpaper with blur.
o Key Ergonomics: Independent corner radius controls for normal, function, and action keys, plus adjustable key gaps and padding scales.
o Tactile Key Audio: Built-in low-latency sound engine featuring Cherry MX, Vintage Typewriter, Retro CRT, Soft Velvet, and custom sound pack import.
? Clipboard & Productivity:
o Smart Clipboard Manager: Search clips in real-time, edit text directly in the toolbar, pin favorites, and 5-second undo for deletions.
o Inline Math Solver: Type equations directly (e.g., 25*4= or 150-20%=) for instant calculation in the suggestion strip.
o Dynamic Text Expander: Expand text shortcuts with dynamic variables like date, time, and clipboard content.
o Screenshot Suggestions: Instant 1-tap sharing and text extraction for recently captured screenshots.
o Modular Backup & Restore: Selectively export and import your layouts, themes, dictionaries, and clipboard history.
Modular Input & Plugins:
o Voice Typing: Accurate on-device speech-to-text powered by Whisper models.
o Handwriting Recognition: Draw characters and symbols directly on an in-keyboard canvas.
o Camera & Screenshot OCR: Extract text from real-world documents or screenshots with an in-keyboard viewfinder.
o In-Keyboard Translation: Translate text instantly via offline models or cloud translation.
Smart AI Tools (Completely Optional):
o On-Demand Proofreading: Fix grammar, adjust tone, or rephrase text when you choose to use it.
o Flexible Providers: Connect to Google Gemini, Groq, OpenAI, or self-hosted local LLMs (Ollama, LM Studio, LocalAI).
o Custom AI Keys: Program quick toolbar buttons with custom prompt instructions.
o Fully Opt-in: Network access is only used if you provide an API key and explicitly trigger an AI request.
Built with ? by LeanBitLab.
License: GPL-3.0-only
| Release info | Update on Nov 04, 2026 |
|---|---|
| Release notes | Support Our Work As an open-source, community-funded project, we operate on a very limited budget. If LeanType helps you daily, please consider supporting us on GitHub Sponsors or Open Collective. Sharing LeanType with friends and family makes a huge difference! LeanType 4.3.1 --- ? Added o Full Keyboard Swipe Delete Word Option (#757): Added "Delete word" as a selectable action for full keyboard horizontal swipe gestures under Gesture Typing settings. Allows swiping left or right across the keyboard to delete the preceding word, including active composing word reset, selection deletion, dictionary unlearning, and repeated DEL key events for web editor compatibility, with localized translations across all 30 languages. o Clear Learned Words & User History: Added a dedicated, privacy-focused option in Text Correction / Suggestions settings to reset learned words, personalized dictionary history, and session word boost caches, complete with a security confirmation dialog and localized feedback toasts. o Irish & Group 1 Latin Input Subtypes: Added standardized input subtypes in method.xml for Irish (ga, ga_IE), Bosnian (bs, bs_BA), Norwegian Nynorsk (nn, nn_NO), Cebuano (ceb), Malagasy (mg), Sardinian (sc), and Toki Pona (tok), backed by comprehensive unit tests. Fixed o Dictionary Traverse Session Concurrency (SIGSEGV Fix) (#759): Synchronized native traverse session access during word suggestions in BinaryDictionary to prevent concurrent traversal race conditions between background suggestion lookups and rapid typing, eliminating fatal native segmentation faults (SIGSEGV). o Samsung & Multi-Profile IME Crash Resolution: Replaced rigid InputMethodInfo equality checks with resilient package matching and PackageManager fallbacks, resolving fatal RuntimeException crashes on Samsung devices (such as Galaxy S25 Ultra) and isolated environments (Knox, Secure Folder, Work Profiles, Direct Boot) where system inputMethodList excludes third-party IMEs. o Multilingual... |
| Listing data | F-Droid |
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Private, customizable open-source keyboard with smart productivity tools
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