Compare like with like

REACTION TIME BY DEVICE

Name your current setup — phone, laptop, gaming PC, mouse, monitor, touchscreen — and Reaction Lab will attach that profile to new sessions. Compare profiles without pretending browser hardware differences are biological differences.

CURRENT DEVICE PROFILE

Changing the profile does not rewrite old sessions. New completed tests use the new label.

DEVICE COMPARISON

Profile	Sessions	Timed average	Fastest	Modes

WHAT CAN CHANGE A SCORE?

Display refresh and processing delay can change when a visual stimulus becomes visible.

Mouse, keyboard and touchscreen hardware report inputs at different rates and through different software paths.

Bluetooth audio can add substantial output latency to Sound Reaction.

For progress tracking, consistency of setup is usually more useful than comparing two completely different devices.

WHY DEVICE COMPARISONS NEED CARE

A phone and a desktop can produce different reaction scores even for the same person. Display refresh rate, touch processing, mouse polling, browser scheduling and operating-system input handling all contribute to the measured delay.

Use this page to organise your own like-for-like observations rather than to declare one device universally faster. Repeat several trials on each setup, keep the test mode the same, and record the input method. The mouse vs touchscreen guide and refresh-rate guide explain the main sources of hardware timing differences.