About these tools
Explore reaction time, timing, color matching and memory, or play tic tac toe and four in a row on one device.
Processed in your browser
Graphite builds tools that work without an account. File conversion, calculations and games run in your browser rather than an input-processing server.
Design and operation
The sites are served as static assets on Cloudflare and are configured to support operation through advertising. Advertising and request data are described in the privacy policy.
Check your result
Supported formats and features vary by device and browser. Keep originals and inspect converted or generated results before using them.
Creator and contact
Graphite provides creator information and public contact links on its about page.
Available tools
- Reaction Time Test — Measure how fast you react to a visual signal over 5 rounds.
- Time Sense Test — Stop a hidden stopwatch at exactly 5, 10 or 30 seconds.
- Color Test — Spot the one tile with a slightly different shade as the grid grows.
- Number Memory Test — Remember a number that grows by one digit every round.
- Aim Trainer — Hit 30 targets as fast and as accurately as you can.
- Click Speed Test — Count clicks over 5, 10 or 15 seconds and calculate clicks per second.
- Sequence Memory Game — Watch a growing tile sequence and repeat it in order.
- Visual Memory Game — Remember highlighted squares on a 4×4 board and find them after they disappear.
- Two-Player Tic Tac Toe — Play a local two-player game of tic tac toe, undo moves and save the board as an image.
- Four in a Row — Drop pieces into a seven-column board and connect four marks with another player on the same device.