Privacy & children's privacy notice

You can read every page and play every simulation on this site without an account, and we do not run analytics, advertising or third-party tracking scripts. The only personal data we ask for is an email address, and only if you choose to join the launch waitlist.

• Waitlist signups. The email address you type and the role you pick (learner, parent, educator or developer). Used to email you at launch and when a new module ships. Nothing else.
• Server logs. Our host records standard request logs — IP address, timestamp, requested path, user agent — to keep the service running and to block abuse. These are retained for 30 days and then deleted.
• Nothing from the simulator. The slider, the readouts and the lending chain all run in your browser. Your inputs are never sent to us.

• No cookies for advertising, profiling or cross-site tracking.
• No analytics or session-recording services.
• No names, addresses, phone numbers or payment details.
• No selling, renting or trading of any data, ever.

OpenMacro is written for young adults and kids, so we treat children's privacy as a design constraint rather than a policy page.

• The app requires no account and no sign-in. Lesson progress, streaks and reward points are stored on the device and are never uploaded.
• We do not knowingly collect personal information from children under 13. The waitlist form asks that anyone under 13 have a parent or guardian sign up instead.
• MacroXP and MintBucks are a learning score. They are not currency, not a wallet, and cannot be exchanged, transferred or cashed out. There is no purchase path anywhere in the product.
• Skill credentials are issued only when a learner asks for one, and for anyone under 13 only with a parent or guardian. We do not publish a child's attainment, name or identifier to any public ledger or third-party registry.
• Prize pools are created, funded and awarded by the sponsor — a parent, a school or a community group. OpenMacro never takes custody of the money and never handles a payout. Entry is always free, and nothing in the product is a wager.
• There is no advertising, no in-app purchasing, and no chat or other child-to-stranger communication anywhere in the product.
• If you believe a child has given us an email address, write to privacy@openmacro.org and we will delete it. No proof of identity is required to ask for a deletion.

The website runs on Google Cloud Run. Waitlist signups are recorded in Google Cloud Logging and, where a mailing provider is configured, forwarded to it so we can send the launch email. We keep waitlist entries until you unsubscribe or ask for deletion, whichever comes first.

• Every email we send carries a one-click unsubscribe link.
• Email privacy@openmacro.org to see, correct or delete what we hold. We answer within 30 days.
• Delete the app to erase all on-device progress. Nothing survives on our side.

Material changes will be posted here with a new date, and anyone on the waitlist gets an email. This notice lives in the same open-source repository as the site, so its full history is public — read it on GitHub. Questions go to privacy@openmacro.org.