Last updated: 2026-05-14

MathNet (“the app”) is designed so that the developer can’t see your data even if they wanted to. This policy describes what data the app handles and what happens to it.

TL;DR

  • No accounts. MathNet uses your iCloud account for sync. There is no MathNet login.
  • No third-party SDKs. No analytics, no advertising, no crash reporters that ship data to anyone but Apple.
  • No MathNet servers. The developer doesn’t operate any backend infrastructure. All data lives in your private CloudKit database, accessible only to you.
  • The reward webhook (optional) sends data only to the URL you configure. The developer never sees it.

Data the app handles

The following data is stored locally on your device and synced via your private iCloud CloudKit database:

  • Math practice session results (which problems were answered, correctly or not, and how quickly)
  • Mastery state per problem type
  • Earned points and credit balance
  • Per-device settings (admin password if you set one, webhook URL if you configured one, etc.)

This data is stored in your iCloud account’s private database. The MathNet developer cannot access it. Apple cannot access it without legal process directed at you (per Apple’s iCloud Privacy).

Data the app does not collect

  • Names, addresses, phone numbers, email addresses
  • Location data
  • Photos, contacts, microphone, or camera input
  • Advertising identifiers
  • Crash logs sent to any third party (Apple’s standard crash reporting is opt-in by the user at the OS level)

The reward webhook

If you enable the reward system and configure a webhook URL in Settings, MathNet sends a small JSON payload directly from your device to that URL whenever you tap Redeem. The payload contains:

  • The event type (redeem)
  • Number of credits redeemed
  • Post-redemption balance
  • An ISO timestamp
  • The device name (as configured in iOS Settings)

If you set an Admin password in Settings, it is sent as an Authorization: Bearer header on the same request, so your receiving endpoint can verify the request’s authenticity.

MathNet does not proxy, log, or store this request anywhere. It goes directly from your device to your configured URL. The developer has no visibility into what URL you configured or what your endpoint does with the data.

Children

MathNet is designed for use by children practicing math under adult supervision. The app:

  • Does not collect personal information from children
  • Does not display advertising
  • Does not link out to third-party services or websites without admin intervention
  • Stores all data in the family’s private iCloud database

The optional reward webhook is configured by an adult (admin password protected) and sends data only to the URL the adult chose. If you configure the webhook to send data to a third-party service, that service’s privacy policy governs how the data is handled once it leaves your device.

Your rights

Since the developer has no access to your data:

  • To export your data, use iOS’s standard iCloud export tools.
  • To delete your data, delete the app from your devices and (if desired) remove the MathNet app data from iCloud via Settings → [your name] → iCloud → Manage Account Storage.
  • There is no MathNet account to delete because there is no MathNet account.

Changes to this policy

If this policy changes, the date at the top of this page will be updated.

Contact

For questions about this policy, see the support page.