How do you play the alternating tap speed test?

Press A and L in strict alternation, or alternate taps between the left and right touch zones. The highlighted side shows which input is expected next.

How is the standard score calculated?

Standard mode counts correct alternating taps during 20 seconds. It also shows correct taps per second and out-of-order inputs.

How does endless mode work?

Complete each alternating-tap quota before its timing bar empties. Later levels allow less time, and one wrong-side input or missed quota ends the run.

RHYTHM & SPEED · 20 SECONDS

ALTERNATING TAP SPEED TEST

Switch left, right, left, right as quickly as you can without breaking the order.

CORRECT TAPS 0

Alternate for 20 seconds. Wrong-side taps count as errors, but the test continues.

CORRECT0

TAPS / SEC0.00

WRONG ORDER0

LOCAL BEST—

READY?

ALTERNATE LEFT AND RIGHT

The glowing side is always the side you must press next.

TIME REMAINING 20.0

Keyboard: alternate A and L · Touch or mouse: alternate the two large zones.

HOW TO PLAY

Keep the sequence clean while the clock runs.

01
Start the test and look for the highlighted NEXT side.
02
Press A then L on a keyboard, or alternate the left and right touch zones.
03
Do not press the same side twice. In standard mode, recover by pressing the side that still glows.

BILATERAL SPEED

What does alternating tap speed measure?

The test challenges rapid left-right coordination, rhythm control, and the ability to inhibit a repeated input.

Your correct-tap count rewards speed, while the wrong-order count shows whether that speed stayed controlled.

READ YOUR RESULT

Count first, speed and errors for context

Standard mode ranks the number of correct alternating inputs completed in 20 seconds. Taps per second is based only on correct inputs.

Endless mode raises the required tempo by shortening each level window. One wrong-side tap or an incomplete quota ends the run.

QUESTIONS

Alternating tap speed test FAQ

Which keys should I press?

Use A for the left side and L for the right side. On a phone or tablet, tap the large left and right zones instead.

What happens after a wrong-order tap?

Standard mode adds an error and keeps the expected side unchanged. Endless mode ends immediately after the first wrong-side tap.

What is a good alternating tap score?

Use your first complete run as a baseline, then compare correct taps, taps per second, and errors under the same 20-second conditions.

Why does endless mode have a timing bar?

The bar shows the window for the current quota. It gets shorter as levels rise, requiring a faster alternating rhythm.