A local-first productivity tracker inspired by a chess clock.
Unlike traditional focus timers that only measure productive time, Productive Gambit tracks both focused work and time spent away from work, giving you a more accurate picture of how efficiently you use your time.
The application runs entirely in the browser using HTML, CSS, and vanilla JavaScript. No account, backend, or third-party services are required.
Most productivity tools answer one question:
How much work did you complete?
Productive Gambit answers another:
How much of your available time was actually productive?
By tracking both productive and non-productive time, you can measure efficiency instead of simply accumulating focus hours.
Example session:
Focused Work: 4h 00m
Time Pass: 1h 20m
Total Time: 5h 20m
Productivity: 75%
Instead of knowing only that you completed four hours of work, you also see how much time it actually required.
A chess-clock style timer where only one side runs at a time.
- Focused Work timer
- Time Pass timer
- One-click switching
- Spacebar and keyboard shortcuts
- Automatic idle detection
- Custom timer labels
- Custom time allocations
- Overtime tracking
- Active side highlighting
- Start, pause, and reset sessions
- Automatic session recovery after refresh
- Persistent timer state
- HH:MM:SS precision
- Optional session review before reset
Automatically attributes inactive time to the appropriate timer.
- Browser inactivity detection
- Optional system-wide idle detection (supported browsers)
- Configurable timeout (1–60 minutes)
- Automatic timer switching
- Browser notifications
- Audio alerts
- Overtime notifications
- Focus budget expiration alerts
- Accessibility announcements
Each completed session includes:
- Focus time
- Time Pass
- Total elapsed time
- Productivity ratio
- Focus efficiency rating
- Daily productivity
- Focus totals
- Time Pass totals
- Session count
- Best and worst days
- Average productivity
- Monthly focus totals
- Monthly distraction totals
- Average daily focus
- Productivity averages
- Long-term trends
A GitHub-style heatmap visualizes daily productivity over the previous three months.
- Productivity intensity
- Historical trends
- Hoverable daily statistics
- Responsive layout
Compare current performance with previous periods.
- This week vs last week
- This month vs last month
- Focus time changes
- Productivity improvements
Generates simple local insights from historical data, including:
- Productivity trends
- Most productive weekdays
- Average focus duration
- Focus efficiency patterns
- Consistency observations
All analytics are calculated locally.
| Key | Action |
|---|---|
| Space | Switch timers |
| 1 | Focused Work |
| 2 | Time Pass |
| P | Pause |
| R | Reset session |
| S | Open settings |
| Esc | Close dialogs |
Configure:
- Timer durations
- Side names
- Notification settings
- Sound effects
- Wake Lock support
- Idle detection
- Pause controls
Example timer labels:
- Focus / Distraction
- Work / Break
- Study / Leisure
- Coding / Browsing
Productive Gambit is completely local-first.
- No accounts
- No login
- No backend
- No analytics
- No cloud dependency
All settings, session history, and productivity data are stored locally in your browser.
- Full keyboard navigation
- Semantic HTML
- ARIA labels
- Screen reader support
- Live announcements
- HTML5
- CSS3
- Vanilla JavaScript
- LocalStorage API
No frameworks. No build tools. No dependencies.
Planned features include:
- CSV/JSON export
- Multiple productivity profiles
- Additional charts
- Custom themes
- Goal tracking
- Backup and restore
- Optional cloud sync
Released under the MIT License.