Memory Test (Simon)
Watch the lit-up sequence, then repeat it back — each round adds one more.
How to use Memory Test (Simon)
Follow these steps — everything happens instantly in your browser.
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Step 1. Click Start. Watch the pads light up in sequence — listen to the tones too.
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Step 2. When the sequence finishes, repeat it back by clicking the pads in the same order.
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Step 3. Each round adds one new step. The current round and your best score are tracked above.
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Step 4. Make a mistake and the game ends — click Play again to retry.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about memory test (simon).
Number Memory Test
Memorize a number, type it back — each level adds one more digit.
Color Vision Test
Ishihara-style plates drawn on canvas — see if your color vision is normal.
Typing Speed Test
Measure your words-per-minute with a live paragraph and accuracy tracking.
Reaction Time Test
Wait for green, click as fast as you can — measures reflexes in milliseconds.