HPR - Human Pattern Recorder

Know where your time actually went.·hpr-cpp.netlify.app

HPR is a compiled, offline, zero-account activity tracker that watches the user's active window every 50 milliseconds and builds a local history of application usage. It shows current focus, time per app, and switch history, and includes a pattern analysis engine, app limits/goals, and a day-construction timeline. It runs as a single compiled C++23 binary with no telemetry or accounts unless the user opts in.

What it's for

Track total time spent per application each daySee a chronological switch history between applicationsTrack which VS Code or JetBrains project is currently activeTrack which browser tab is active without a browser extensionSet daily time limits or usage goals on any application with notifications and optional auto force-quitVisualize a day's activity on a zoomable timelineAnalyze cross-day productivity patterns such as escape patterns, focus dips, and weekend habitsQuery historical activity data by single day, last N days, or a custom date rangeExtend tracking behavior with custom Lua scripts/extensionsEdit the app's UI at runtime without recompiling

Features 17

Alias system for applications, tabs, and projects with hot reload
Browser tab tracking without an extension (Chrome, Edge, Firefox, Brave, Zen Browser)
Day Construction Timeline with zoom presets, adaptive hour markers, and gap capping
Function Overriding API to intercept 28 core C++ functions from Lua
Historical data loading in Single Day, Last N Days, and Date Range modes
Interpreted UI mode allowing runtime editing of Slint UI files without recompiling
Live time accumulation per application
Non-blocking, parallel N-thread historical query loading
Opt-in only telemetry, analytics, and networking; offline core by default
Pattern Analysis Engine producing real-time daily metrics and 9 advanced cross-day insights
Per-app daily time limits and usage goals with system notifications and optional auto force-quit
Real-time active window tracking polled every 50ms
Sandboxed Lua 5.4 extension engine with EventHub messaging and SQLite access
SQLite database stored as one file per day with WAL mode
Tab View (raw) vs Site View (aliased) tab grouping via tabAliases.csv
Timestamped switch history between applications
VS Code and JetBrains IDE project tracking without editor extensions

At a glance

free tieropen sourceAPI

TypeDesktop app

DeploymentInstalled (local)

PlatformsWindows, Linux

Integrations

Zen BrowserPhpStormVisual Studio CodeMozilla FirefoxGoLandRiderPyCharmMicrosoft EdgeIntelliJ IDEAWebStormBraveCLionDataSpellGoogle ChromeRustRoverDataGripRubyMine

Resources

Docs

Pricing

HPR is entirely free and open source; a formerly separate premium version has been merged into the free version, so all features are available at no cost. Optional donations are accepted via Ko-fi.

FreeFree

Open source and free forever; no premium tiers or feature gating.