Legal

Privacy Policy

Effective October 15, 2026 · Version 1.8

The short version

• Numblewick^™ is operated by G10 Media LLC, a California company.
• Children only use Numblewick through a profile a parent creates. Kids never enter an email, phone number, or address.
• We collect the minimum needed to run a math tutor: a display name (usually the child's first name), grade, and a few setup answers (favorites and hardest topics) for each child, and an email and first name for each parent.
• We show no ads. We never sell, rent, or license personal information, and we never build ad profiles.
• We use aggregated, de-identified statistics only to improve Numblewick.
• You can delete a child profile, an uploaded worksheet, or your entire account at any time from the Parent Dashboard.

1. Who we are and who this policy is for

Numblewick is operated by G10 Media LLC, 10536 John Way, Cupertino, CA 95014 (support@numblewick.com). This policy explains what we collect, why, how we protect it, and your choices. It applies to numblewick.com and the Numblewick apps (the "Service") and works alongside our Terms of Service.

2. Data we collect from children

Numblewick is built for children in grades 1–7. We collect only what's needed to run the tutor:

• Display name: usually the child's first name, though a parent may enter a nickname or initial. It is shown on the child's own screens and in the Parent Dashboard, never to other families.
• Grade level.
• Setup answers: the first time a child signs in to the profile a parent created, they are asked their favorite animal, food, color, and TV or movie character; optionally, a favorite singer or artist; and which math topics feel hardest. Earlier versions of the app asked for the first names of friends and of brothers or sisters. We no longer ask for them or use them, and we have deleted those already stored. Later, from their own profile screen, a child can optionally add which math topics they're studying in school. We use these answers only to personalize practice (favorites appear in word problems, and the hardest topics and school topics get extra practice), and they are never shown to other families. You can delete them by deleting the child's profile from the Parent Dashboard.
• Practice activity: problems attempted, answers, scores, hints used, session length, and items earned or bought in the Glimmer Shop.
• Uploaded worksheets (optional, parent-initiated only): see section 3.

We do not collect a child's email, phone number, home address, photo, precise location, biometric data, or contacts.

3. Uploaded homework and worksheets

Parents can optionally upload a photo, PDF, or Word document of their child's schoolwork from the Parent Dashboard. Numblewick reads it with an AI model and generates similar practice problems.

• What files contain: a photo of schoolwork often includes the child's handwritten first name, and may include a teacher's name, class, school, or date. We don't ask for these; they are what's visible on the page.
• Parent-initiated only: children cannot see or use the upload feature.
• Sent to Anthropic: the file is sent to Anthropic's Claude API to read the problems. Under Anthropic's standard API terms, inputs and outputs are not used to train its models and are retained by Anthropic for up to 30 days solely for abuse detection and trust-and-safety review.
• Short-lived storage: the file is deleted from our storage as soon as it has been read, and always within 24 hours; a daily cleanup is a backstop. Uploaded files are never shown to other families or used for advertising.
• What we keep: the practice problems generated from the worksheet stay in your account until you delete them from the Problem Library.

4. Data we collect from parents

• Email address: for sign-in and the emails described in section 12.
• First name.
• Optional profile fields such as state and school name, used only to align practice to your state's standards.
• Technical data such as device type, browser, and IP address, used for security and debugging. We use no analytics or advertising services: no Google Analytics, no tracking pixels.
• Membership records if your family subscribes: status, renewal and end dates, and Apple's transaction identifiers (see section 10).

We do not collect a parent's phone number, home address, payment card, or government ID.

5. How we use the data

• Run practice sessions and adjust difficulty.
• Generate hints, walkthroughs, and progress reports.
• Sign you in and keep your account secure.
• Send the emails described in section 12.
• Improve our curriculum using aggregated, de-identified statistics (section 7).
• Comply with legal obligations and detect abuse or fraud.

6. How we do not use the data

• We do not show advertising in the Service.
• We do not sell, rent, or license personal information about any child or parent.
• We do not use a child's data for advertising or any commercial purpose.
• We do not let third parties track users across the internet from within Numblewick.
• We do not share individual practice data with schools or districts without your written consent.
• We do not allow children's data to be used to train AI models (see section 9).

7. Aggregated & de-identified data

We may combine data across many users into statistics, for example "students in grade 4 solve long-division problems with 68% accuracy on average." These cannot be traced to any child, family, or account. We use them only to improve the Service.

8. When we share data

• Service providers that host and run the Service, listed in section 9, only to provide it.
• Family members you invite (for example, a co-parent), who can see the practice data for your children.
• Legal compliance: if required by valid legal process. Where the law permits, we will try to notify you first.
• Business transfers: if G10 Media LLC or Numblewick is acquired or merged, personal data may transfer to the successor, which must honor this policy or notify you and let you delete your data.

We do not sell personal information to advertisers, data brokers, or anyone else.

9. Third-party services we use

• Google Firebase: authentication, database, file storage, and hosting.
• Anthropic Claude API: AI-generated hints and worksheet-derived problems. Uploaded worksheets and prompt text are sent to Anthropic only to fulfill the immediate request, are not used to train Anthropic's models, and are retained by Anthropic for up to 30 days for abuse detection and trust-and-safety review only.
• Apple (App Store): membership payments, once memberships begin. Apple processes the payment with your Apple ID; we receive only the subscription's status, dates and transaction identifiers, never card details.
• Resend: email delivery. Resend has access only to the email address and the message contents.

10. Payment information

Paid memberships have not started yet. They begin on the date we announce to families by email. From then, memberships are bought only through Apple's App Store, as described below.

Memberships are bought only through Apple's App Store, in the Numblewick app on iPhone or iPad. Apple processes the payment with your Apple ID; we never see or store your card details. Apple tells our servers that a membership started, renewed, ended or was refunded, with the dates and Apple's transaction identifiers, and we store those so every device in your family knows whether it is active. Nothing about your children's practice is ever sent to Apple.

11. Data security

Data is sent over TLS, stored encrypted at rest by our infrastructure providers, and access is limited by authentication and role-based controls. No system is perfectly secure; please use a strong, unique password for your parent account.

12. Emails we send

Practice-progress emails about your own children are on by default. Product news and learning tips are opt-in only, through a checkbox on the sign-up form that starts unticked. Change either at any time in the Parent Dashboard (Settings → Email preferences) or with the unsubscribe link in any Numblewick email. Account emails (invites, password resets, membership and account-deletion notices) are sent when needed.

13. Parents' rights (COPPA) and your choices

As a parent or guardian you can, at any time:

• review the information we hold about your child in the Parent Dashboard;
• delete your child's profile and all associated practice data and setup answers;
• refuse further collection by deleting the profile;
• ask for a copy of your child's information, or ask us to correct it, by emailing support@numblewick.com. We will respond within 30 days.

Residents of California (CCPA/CPRA) and other places with data-protection laws have additional rights, including to know, access, correct, delete, or port their personal information, and not to be discriminated against for exercising them. We do not sell or share personal information for cross-context behavioral advertising. To exercise any right, email support@numblewick.com.

14. Data retention & deletion

• Uploaded worksheet files: deleted within 24 hours of upload (section 3).
• Child profiles: kept while the profile is active. Deleting a profile from the Parent Dashboard removes it, with its practice history and generated problems, from our production database.
• Parent accounts: kept while the account is open. You can delete your account at any time from Settings. Nothing is deleted at once: we email you, and for 7 days you can cancel. Then every child, session, uploaded document and your login are deleted. We keep a copy of the family for 30 days after that only so a mistaken deletion can be undone, then delete it. Everything is gone from our production systems within 40 days of your request.
• Aggregated, de-identified statistics may be kept indefinitely, since they cannot identify anyone.
• Encrypted backups may hold data for up to 90 days before they rotate out. We restore from backups only to recover from a disaster, never to bring back data you deleted.

15. Cookies, local storage, and where data is stored

We use browser local storage and first-party cookies to keep you signed in and remember settings. We use no third-party advertising cookies or cross-site trackers. Numblewick is offered in the United States, and data is stored and processed in the United States.

16. Changes and contact

If we make material changes, we will tell you by email or in-app notice at least 14 days before they take effect, and the app will ask you to review them before continuing. Questions, data requests, or COPPA concerns: G10 Media LLC, 10536 John Way, Cupertino, CA 95014, support@numblewick.com. We aim to reply within 5 business days, and complete any data request within 30 days.