Terms of Use

Last updated: 9 May 2026

Acceptance

By using PlayMemorize you agree to these terms. If you do not agree, do not use the site. These terms may change. Continued use after any change constitutes acceptance.

Permitted use

PlayMemorize is provided for personal, educational, and non-commercial use. Current pricing and any paid features are described on the Pricing page. You may:

• Use the trainer to memorise mathematical constants and prime numbers.
• Share links to any page on playmemorize.com.
• Use PlayMemorize in a classroom or educational context.

Prohibited use

You may not:

• Scrape, copy, or redistribute the site's source code or assets for commercial purposes without permission.
• Attempt to interfere with or disrupt the site or its hosting infrastructure.
• Use the site in any way that violates applicable laws.

Intellectual property

The digits of mathematical constants (pi, e, phi, and others) are mathematical facts and are in the public domain. No one owns them.

The PlayMemorize application code, design, visual presentation, and educational content are owned by PlayMemorize. The name PlayMemorize and its visual identity may not be used without permission.

Bitcoin Lightning Rewards and Withdrawals

PlayMemorize may offer promotional Bitcoin Lightning micropayments (Satoshis) to players as an educational reward mechanism:

• Promotional gameplay rewards: Eligible players may earn Satoshis through verified gameplay in supported challenges while the daily reward pool remains active. Unverified actions, repeated rapid submissions, and automated interactions do not qualify for rewards.
• Daily pool limits: Rewards are distributed from a promotional daily community pool. Once the daily pool has been allocated, reward distribution pauses until the start of the next cycle.
• Registered accounts only: Satoshis may be accumulated during gameplay, but withdrawals require an account registered with a verified email address. Anonymous sessions cannot initiate withdrawals.
• Withdrawal verification: Withdrawals are subject to minimum balance thresholds, account standing, and security verification. Each player must use their own personal destination address.
• Fair play and anti-abuse prohibition: The use of bots, automated clickers, headless browsers, script automation, multiple accounts, or any non-human interaction to farm rewards is strictly prohibited. Accounts engaging in abusive behavior or fraudulent patterns will have their rewards forfeited and access terminated.
• No financial guarantees: Rewards are promotional gameplay perks funded out of our own reserves and do not constitute financial instruments, bank deposits, investments, or contractual debts. Lightning transactions are subject to peer-to-peer liquidity and network availability.

No warranties

PlayMemorize is provided as is, without warranty of any kind. We do not guarantee that the site will be available at all times, that digit data is free of errors, or that it will meet any particular purpose. Mathematical constants are computed to reasonable precision but are not certified for scientific or safety-critical use.

Limitation of liability

To the fullest extent permitted by law, PlayMemorize and its operators accept no liability for any loss or damage arising from use of the site, reliance on any content, or inability to access the service.

Accounts

Creating an account is optional. If you sign in with your email, you agree that we may store your email address and account activity as described in our Privacy Policy. You may request deletion of your account at any time by emailing hello@playmemorize.com.

Your data

Game progress is stored in your own browser. Account data (if you sign in) is stored on our servers. See our Privacy Policy for full details.

Contact

Questions about these terms? Email hello@playmemorize.com.