Sources and verification

The reference: the app

The rules described on this site are those of the Tap Tap app, read from its code: modes, delays between colors, allowed delay, sequence length, grid sizes, score calculation. When the in-app help and the code differ, the site follows the code.

Sources consulted

• Reaction time (new tab) (Wikipedia): what a reflex game measures: the delay between a signal and the response (Follow mode).
• Memory span (new tab) (Wikipedia): the length of sequence you can remember at once, and the benefit of splitting it up (Memorize mode, Strategy page).
• Working memory (new tab) (Wikipedia): the memory that holds a sequence while you replay it.
• Mental chronometry (new tab) (Wikipedia): the history of measuring reaction times.

Links checked on October 30, 2026.

How the examples are verified

Before each publication, two independent programs redo all of the site's calculations:

• a tool connected to the app's engine, without modifying it, plays each example game like a player: it lets the app draw the colors, taps the right tiles and records the delays and score calculated by the app;
• it checks, over 2,000 draws, the color of the tiles and the sequence length of each round;
• a second, separately written program redoes the draws, delays and points, and blocks publication at the slightest discrepancy.

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