InputMetrics

A lightweight macOS menu bar app that tracks your keyboard and mouse usage with beautiful charts, heatmaps, and detailed statistics. Entirely private, entirely local.

macOS 15+ · Free · Open Source
Download Latest Release

Installation

Download the ZIP from the latest release

Extract and drag to Applications

Launch from menu bar

Grant Accessibility & Input Monitoring

Features

Mouse Distance

Tracks cursor travel in pixels, converted to real-world meters, kilometers, feet, or miles. Includes fun comparisons showing your progress toward circling the Earth or reaching the Moon.

Click Tracking

Separate counters for left, right, and middle mouse clicks. View today's counts and all-time totals at a glance.

Scroll Distance

Measures both vertical and horizontal scroll distance in pixels, with automatic shorthand formatting for large numbers.

Keystroke Counter

Counts every keypress with per-key frequency tracking. See your top 5 most-used keys each day and all-time keystroke totals.

Mouse Heatmap

A 50×50 grid heatmap showing where you click most. Multi-monitor aware with per-display and aggregate views. Color scale from blue to red.

Keyboard Heatmap

Full QWERTZ keyboard layout rendered with color-coded intensity, showing which keys you press most. Tracks modifier combinations (Cmd, Shift, Ctrl, Option).

Interactive Charts

Smooth line charts with area fills and data points for weekly, monthly, and yearly views. Hover tooltips show exact values for any day.

Menu Bar & Dashboard

Quick-access popover from the menu bar for daily stats. Full dashboard window with expanded charts and heatmaps for deeper analysis.

How It Works

InputMetrics lives in your menu bar and passively listens to input events using a read-only CGEventTap. It cannot intercept, modify, or block any input — it only counts.

Data Collected

Mouse: Cursor distance (pixels), click counts (left/right/middle), scroll distance (vertical/horizontal), click positions bucketed into a 50×50 grid
Keyboard: Per-key press count by virtual key code and modifier flags
Timing: Daily and hourly aggregates for trend charts

Data NOT Collected

What you type (no keystroke content, sequences, or text)
What is on your screen (no screenshots, window titles, or app names)
Personal information of any kind

In-memory buffers flush to the local SQLite database every 30 seconds and on app quit. You can configure automatic data pruning (3 months, 6 months, 1 year, or keep forever) in Settings.

Settings & Data Management

Launch at Login: Start InputMetrics automatically when you log in
Live Menu Bar Stats: Optionally display today's distance and keystroke count next to the menu bar icon, refreshed every 2 seconds
Distance Unit: Switch between Metric (m/km) and Imperial (ft/mi)
Data Retention: Auto-prune data older than 3 months, 6 months, 1 year, or keep everything forever
Export CSV: Export all data (daily summaries, mouse heatmap, keyboard heatmap) to a CSV file at a location you choose
Reset All Data: Permanently delete all stored data with a confirmation prompt

Tech Stack

Layer	Technology
Language	Swift 6
UI	SwiftUI with AppKit bridging
Charts	Swift Charts (LineMark, AreaMark, PointMark)
Event Capture	CGEventTap (listen-only)
Database	SQLite via GRDB.swift
Login Item	SMAppService (ServiceManagement)
Architecture	MVVM with @Observable ViewModels
Minimum macOS	15.0 (Sequoia)

Permissions

InputMetrics requires two macOS permissions to function. Both must be explicitly granted by you in System Settings > Privacy & Security:

Accessibility: Allows the app to monitor global input events (keyboard and mouse)
Input Monitoring: Required by macOS for apps that observe key and pointer events

The app runs outside the sandbox to enable input event monitoring via CGEventTap. It has no network entitlements and makes zero network requests. If permissions are not granted, InputMetrics will prompt you and open the relevant System Settings pane.

Privacy Policy

Last updated: March 11, 2026

The Short Version

InputMetrics collects zero personal data. Everything stays on your Mac. Nothing is ever transmitted anywhere.

Data Collected

InputMetrics records only aggregate usage counts, stored locally in a SQLite database at ~/Library/Application Support/InputMetrics/metrics.db:

Mouse cursor distance traveled (in pixels)
Mouse click counts (left, right, middle)
Scroll distance (vertical, horizontal)
Click position heatmap (50×50 bucket grid per screen)
Keystroke count per virtual key code and modifier combination
Daily and hourly aggregate summaries

Data NOT Collected

Keystroke content, typed text, or character sequences
Screen content, screenshots, or window information
Application names or browsing history
Personal information, identifiers, or account data
Location, contacts, or any other sensitive data

Data Storage & Transmission

All data is stored exclusively on your device
The app makes zero network requests — no analytics, no telemetry, no crash reporting, no update checks
The app runs outside the sandbox (required for CGEventTap) and has no network entitlements
There is no server, no cloud sync, and no third-party service integration

Data Control

Export: You can export all data to a CSV file at any time from Settings
Delete: You can reset all data from Settings, which permanently erases the database
Retention: Configure automatic data pruning (3 months, 6 months, 1 year, or forever)
Uninstall: Removing the app and its container at ~/Library/Application Support/InputMetrics/ deletes all data

Third-Party Services

InputMetrics uses no third-party services, SDKs, or libraries that collect data. The only external dependency is GRDB.swift (local database), which does not perform any network activity. Login item management uses the native macOS ServiceManagement framework.

Children

InputMetrics does not collect personal information from anyone, including children under the age of 13.

Changes

If this policy changes, the updated version will be posted on this page with a new date.

Contact

Questions about this policy? Open an issue on GitHub.