Watch the sequence light up, then repeat it back. Each round adds one more step — find out how many you can hold at once.
No accounts, no servers — your scores are stored locally on your device.
Most people land between 5 and 9 in a row — often called Miller's Law, or "the magical number seven."
NOXR is a digital tools company focused on building free, fast, and reliable web utilities for everyday people. We believe useful tools shouldn't be locked behind paywalls or require you to create an account. To support our mission and keep these tools 100% free for everyone, we display light, non-intrusive advertisements on our website.
Every tool we build follows three principles: it loads fast, works on any device, and gives you accurate results instantly. No bloat, no friction.
Memory Span Test measures how many items you can hold in working memory at once — a concept psychologists call "memory span." Most people land somewhere between 5 and 9, sometimes called Miller's Law, or "the magical number seven."
Have a suggestion for a new tool, found a bug, or just want to say hello? We'd love to hear from you.
Effective date: June 1, 2026 | Last updated: June 22, 2026
NOXR ("we", "our", or "us") operates the NOXR website and all tools hosted under it. This Privacy Policy explains how we handle information when you use our services. We are committed to protecting your privacy and being transparent about our practices.
This tool runs entirely in your browser. We do not collect, store, or transmit any personal data — your sequences and scores are processed locally and never sent to any server.
We may collect anonymous, aggregated usage data through privacy-respecting analytics tools to improve our website. Third-party advertising partners also collect technical information (see Section 3 below).
We work with third-party advertising partners (such as Google AdSense) to serve advertisements when you visit our website. These companies may use cookies, web beacons, and other tracking technologies to collect information about your visits to this and other websites in order to serve ads tailored to your interests. See our Cookie Policy for full details.
Our site also loads fonts from Google Fonts. Google may collect limited technical information (such as your IP address and browser type) to serve these resources. See Google's Privacy Policy for more.
Since we do not collect or store personal data, there is minimal risk associated with using this tool. All computation happens locally in your browser.
This tool is suitable for all ages. We do not knowingly collect any personal data from children under the age of 13.
We may update this Privacy Policy from time to time. We will post the updated policy on this page with a revised effective date.
If you have any questions about this Privacy Policy, please contact us at help@noxr.online.
Effective date: June 1, 2026 | Last updated: June 22, 2026
By accessing or using this tool, you agree to be bound by these Terms of Use. If you do not agree, please discontinue use immediately.
This tool is provided for general entertainment and self-assessment purposes only. NOXR does not warrant that results are error-free or suitable for any clinical or diagnostic purpose.
Our website displays advertisements and may contain links to third-party websites that are not owned or controlled by NOXR. We do not endorse or assume any responsibility for such third-party sites.
All content on this page, including its design, code, and graphics, is the intellectual property of NOXR and is protected by applicable copyright laws.
This tool is provided "as is" and "as available" without any warranties, express or implied.
To the fullest extent permitted by law, NOXR shall not be liable for any damages arising from your use of, or inability to use, this tool.
If you have any questions about these Terms of Use, please contact us at help@noxr.online.
Effective date: June 1, 2026 | Last updated: June 22, 2026
Cookies are small text files placed on your device when you visit a website. They help websites remember preferences and support advertising.
We work with Google AdSense to display advertisements that keep NOXR free for everyone. Google and its partners may set cookies to serve ads based on your visits to this and other websites.
You can control or delete cookies through your browser settings at any time. To opt out of personalized advertising, visit Google Ads Settings or www.aboutads.info.
If you have any questions about this Cookie Policy, please contact us at help@noxr.online.
We're a small team and we genuinely read every message. Whether you've found a bug, have a tool idea, or just want to say hello — reach out and we'll get back to you within 48 hours.