Product Introduction

1. Mousio is a macOS utility application that enables full control of the mouse cursor and system interactions through keyboard shortcuts. It eliminates manual mouse handling by converting standard keyboard inputs into precise cursor movements, clicks, and drag operations. The app supports both direct cursor control and grid-based navigation for enhanced accuracy.
2. The core value lies in optimizing workflow efficiency for keyboard-centric users by minimizing context-switching between input devices. It reduces physical strain from repetitive mouse usage while maintaining full system control. The solution is particularly valuable for multi-display setups and precision tasks requiring coordinated keyboard-mouse actions.

Main Features

1. Keyboard-driven cursor control utilizes WASD, HJKL, or ESDF key layouts with adjustable acceleration curves for pixel-perfect pointer positioning. Users can press modifier keys (Ctrl/Cmd/Opt) twice to activate mouse mode, then employ arrow-equivalent keys for movement with variable speed control through sustained key presses.
2. Dynamic grid navigation mode divides the screen into resizable quadrants (activated via [C] key) for rapid area targeting, with recursive subdivision for precision adjustments. The grid system supports automatic UI element detection and visual highlighting through the Focus Screen feature.
3. Multi-monitor management enables seamless cursor transitions across displays with automatic boundary detection and display-specific grid configurations. The system preserves spatial awareness through coordinate mapping that accounts for varying screen resolutions and arrangement layouts.

Problems Solved

1. Addresses productivity loss from frequent hand movement between keyboard and mouse during text-heavy workflows or developer environments. Eliminates the need for precision pointing devices in graphic design or spreadsheet management tasks through programmable keyboard macros.
2. Primarily serves power users including software developers, data analysts, and accessibility-focused operators who require sustained keyboard workflow maintenance. Secondary beneficiaries include multi-monitor traders and content creators managing complex UI layouts.
3. Enables efficient text selection across non-contiguous document regions through [Space]+[ASWD] modifier combos. Facilitates rapid file organization between Finder windows and cross-application drag-drop operations without manual cursor tracking.

Unique Advantages

1. Combines direct keyboard control with adaptive grid navigation unlike conventional mouse-replacement tools limited to single interaction modes. The hybrid system allows real-time switching between macro-level screen navigation and micro-adjustments through modifier states.
2. Custom Dock implementation provides persistent shortcut access to system functions and third-party apps through user-defined icon panels. This integrates with macOS Dock APIs while adding keyboard-triggered activation through positional grid coordinates.
3. Technical superiority comes from low-level Quartz Event Tap integration ensuring sub-20ms input latency, outperforming Electron-based alternatives. Native Metal-accelerated overlay rendering maintains system performance during grid navigation and Focus Screen operations.

Frequently Asked Questions (FAQ)

1. How do I activate keyboard mouse mode? Press either Control (⌃), Command (⌘), or Option (⌥) key twice consecutively to enable cursor control, then use configured movement keys (WASD/HJKL). The activation sequence is customizable through hidden preference files using Terminal commands.
2. Does grid navigation work with multiple monitors? Yes, the grid system automatically adapts to each display's resolution and extends across all connected monitors. Users can press [C] to create display-specific grids or [⌘+C] for unified cross-screen navigation.
3. Can I customize mouse wheel scroll directions? Scroll mappings are adjustable via the app's configuration plist file, supporting vertical/horizontal scrolling through U/I/O/J/K keys. Advanced users can implement acceleration profiles through JSON configuration imports.
4. How does data privacy work? Mousio operates entirely locally without internet permissions, confirmed by macOS notarization. Input event handling uses Apple's secure Accessibility API without data logging or keystroke recording capabilities.
5. What happens during system updates? The app maintains compatibility through silent background updates via Sparkle framework, with version rollback options available through Time Machine backups. Critical functions are preserved across macOS updates through kernel extension alternatives.