Privacy policy
Version 2026-09-28
Who we are
Teach Me is a math practice app for children in kindergarten through 8th grade. It is run by Sati Hillyer, Walnut Creek, California, under the name Teach Me Anywhere. Questions about privacy go to [email protected].
Parents set up the account, not children
A parent or legal guardian creates the family account and agrees to this policy before any child uses the app. Children never sign up, never type an email address, and are never asked for personal details. We ask parents for as little as we need to run the app.
What we collect
| What | From whom | Why |
|---|---|---|
| Parent email address and a password (stored only as a one-way hash) | Parent | To sign in on any device and to reach the parent about the account |
| Each child's first name, school grade and a cartoon avatar choice | Parent | To show the right child's profile and start at the right level |
| Rewards the parent types in | Parent | To show the child what they are working toward |
| Answers, hints used, days practiced and levels passed | Created as the child practices | To pick the next problems and show progress to the parent |
| Parent PIN (stored only as a one-way hash) | Parent | To keep grades, rewards and settings away from children |
| Feedback and thumbs up or down, with the browser type | Parent or child, optional | To fix problems and improve the app |
| Usage events (for example "opened the app", "finished a day") and network address for short-term abuse limits | Created automatically | To keep the service working and secure, and to count usage in total |
We do not collect photos, voice, location, contacts, school names, last names or birthdays. We do not show ads, we do not track children across other sites, and we never sell or rent personal information.
Who else handles the data
We only share personal information with service providers that help run the app, and only for that purpose:
- Cloudflare hosts the app and its database.
- Anthropic reads the photos of school tests a parent chooses to add, and returns which skills were right or wrong. The photo is sent only for that reading and we do not store it; we keep only the per-skill results. A test page may show the child's name, so parents can cover it before taking the photo. If AI hints are turned on, Anthropic also receives the math problem and the child's answer to write a hint, with no name or other personal detail.
We will not share a child's personal information with anyone else unless a parent gives separate consent, or the law requires it.
How long we keep it
We keep a family's information while the account is in use. When a parent deletes the family, we delete every child's profile, progress, rewards, feedback and usage history right away. Accounts with no activity for 12 months are deleted, unless you delete yours sooner. We email the parent about a month before, and signing in keeps the account. Short-term security records, such as failed sign-ins, are cleared within minutes to days.
What parents can do
- See everything: the Parents area shows each child's name, grade, rewards and progress.
- Change it: edit a child, rewards, username, password or PIN at any time under Family settings.
- Delete it: Family settings → Delete family and all data removes everything. You can also remove a single child.
- Stop collection: deleting the family stops all further collection. You can also email [email protected] and we will do it for you.
Security
Passwords and PINs are never stored in readable form. The app is served only over encrypted connections, sign-in attempts are rate limited, and only the operator can reach the admin console. The database is private to the app and cannot be reached from the internet. Only the operator can see family records, and we look at them only to run the service, answer a parent, or fix a problem. If we learn that family information was exposed, we will tell affected parents by email.
Changes
If we change how we collect or use children's information, we will ask parents to agree again before the change applies to their family.