Number Nest — Privacy Policy

📖1. Overview

Number Nest is a maths-learning app for primary-aged children, designed to be used by a child under a parent's or guardian's supervision. This policy explains what information Number Nest collects, how it is used, where it is stored, and the choices and rights available to parents. We wrote this policy in plain language because we believe families should be able to understand it without a legal background.

🏡2. Who we are & who this policy covers

Number Nest ("we", "us", "our") is the developer of the Number Nest mobile application. This policy applies to everyone who uses the app: the parent or guardian who registers the account ("parent", "you"), and the child profile(s) they create within it ("child", "your child").

Only a parent or guardian may register an account. Children access the app through a locally PIN-protected profile that the parent sets up — children do not create, own, or control a login of their own.

🗂️3. Information we collect

From the parent account holder

• Email address, used to sign in (or a Google / Apple sign-in identifier if you choose social sign-in instead of email/password).
• Your account password — we never store your actual password; only a securely hashed form is kept.
• Optional parent display name (for parent-dashboard greetings only).

About your child (entered by you, the parent)

• A display nickname you choose — not a verified legal name.
• A stock cartoon avatar you pick from a built-in set — never a photo.
• A year-group / age-band (e.g. "Year 1") — we do not collect a date of birth.
• Learning progress: sheets and tests completed, scores, streaks, badges earned, and any accessibility settings (font, contrast, text size) chosen for that child.

Technical & crash diagnostics

If the app crashes or hits an unexpected error, we automatically send a technical report — device model, operating system version, and the error's code location — so we can identify and fix the problem. These reports never include your child's name, answers, progress, or any other personal information.

☁️4. Cloud sync & where data is stored

Account and progress data is stored on your device, and is also securely synced to our cloud database (Google Firebase / Cloud Firestore) so that a parent can access their child's profile and progress if they use the app on more than one device. Every record is scoped to the parent's own account — our security rules only allow a signed-in parent to read or write the records that belong to their own account.

This cloud sync is what allows the app to keep working even with no internet connection: your child can always start a sheet or test offline, and progress syncs to the cloud automatically once a connection is available.

🏆5. Leaderboard feature

If a parent opts a child into the leaderboard feature, we create a small record containing only that child's chosen avatar and star count, grouped by year-group. No name, nickname, or any other identifying information is included in a leaderboard entry — other users only ever see an avatar and a star total, never who a child is.

🎥6. Math Lens (camera) & Voice Answer Mode

Math Lens lets a child point their camera at a written sum to have it read automatically, and Voice Answer Mode lets a child speak an answer instead of typing it. Both features process everything on the device only:

• No photo or video is ever saved, uploaded, or transmitted anywhere.
• No audio recording is stored — speech is converted to text momentarily by the device's own operating system, and only the resulting text answer is used by the app.

📊7. Analytics

Number Nest uses Plausible, a privacy-focused analytics service, to understand how the parent dashboard is used — for example, which settings screens are opened. Analytics is:

• Off by default, and only ever turned on if a parent explicitly enables it in Settings → Privacy & Data.
• Limited to aggregate, anonymous event counts — no names, emails, or device identifiers are included.
• Collected only from parent-dashboard sessions — never from a child's play session.

We do not use any advertising SDK or third-party tracking/analytics service besides Plausible.

🔐8. How we protect your data

• PINs used to lock the parent dashboard and child profiles are stored only as securely hashed values — never as plain text.
• Sign-in tokens and account identifiers are kept in the operating system's encrypted secure-storage area on your device.
• Cloud data transfers use encrypted (HTTPS/TLS) connections; we do not use unencrypted connections anywhere in the app.
• Cloud database access rules require a valid signed-in parent account and restrict each parent to their own data.

🧒9. Children's privacy (COPPA & UK Children's Code)

Number Nest is built around verifiable parental consent: only a parent or guardian can register an account, provide information, and create a child profile. A child never independently provides personal information to us — whatever is stored about a child is entered by their parent.

We do not knowingly collect personal information directly from children, do not show advertising to children, and do not allow children to communicate publicly with strangers through the app (leaderboard entries are name-free, as described above). This design is intended to align with the U.S. Children's Online Privacy Protection Act (COPPA) and the UK Age Appropriate Design Code ("Children's Code").

If you are a parent and believe your child has provided us with personal information beyond what is described in this policy, please contact us using the details in Section 16 and we will investigate and delete it.

📥10. Your rights: access, export & deletion

As the parent, you are in control of your account and your child's data at all times.

Access & export

Settings → Privacy & Data → "Export my data" lets you download a complete copy of everything Number Nest holds for your account and your children, at any time. Password/PIN hashes are never included in an export.

Deletion

Settings → Privacy & Data → "Delete all my data" permanently and immediately removes your account and child profiles from the app, including every associated cloud-synced record and any leaderboard entry. No separate request is needed. If you have any trouble with this or a question about it, email us at numbernest@lowcostsolutions.co.uk from your registered address.

🔗11. Third-party services we use

We do not share information with data brokers or advertising networks.

🚫12. No advertising, no data selling

Number Nest contains no advertising SDK, no ad network, and shows no ads of any kind to children. We do not sell, rent, or trade any information about you or your child to any third party, for any purpose.

🗄️13. Data retention

We keep account and progress data for as long as your account remains active, so that progress, streaks, and history are preserved between sessions and devices. If you delete your account (see Section 10), we remove the corresponding records within a reasonable time.

🌍14. International data transfers

Our cloud infrastructure is provided by Google Firebase, which may process and store data in data centres located outside your home country. Google maintains its own safeguards for international transfers; no additional third party is granted access as a result of this infrastructure choice.

📝15. Changes to this policy

If we make material changes to this policy, we will update the "Last updated" date at the top of this page and, where appropriate, notify parents in the app. We encourage you to review this page periodically.