Math Collector Privacy Policy
Effective date: September 27, 2026
Math Collector (the “App”) values your privacy and complies with applicable laws. This policy explains what information the App handles and how.
1. No accounts, no server storage
The App has no sign-up or login and never asks for your name, age, contact details, email, or precise location.
The following is stored only on your device and is never sent to or stored on our servers:
- Stars per operation and level, and Lightning Challenge best scores
- Collection friends found and stars collected per theme
- App settings such as background music and theme
2. Information sent outside the App
| Recipient | Information | Purpose |
|---|---|---|
| Google Firebase Analytics | App usage (operation and level chosen, answers, stars earned, collection and theme use), a random per-install identifier, device model, OS version, app version, language, approximate country/region | Usage statistics and improvement |
| Google Firebase Crashlytics | Crash logs, app state and technical information at the time of an error, device model, OS version, app version | Diagnosing errors and crashes |
| Google AdMob | Device information, approximate location estimated from IP address, ad impressions and clicks, ad SDK performance and error information | Serving non-personalized ads and measuring ad performance |
- Firebase Analytics is configured not to collect the advertising identifier (IDFA) and not to store ad-related data.
3. Ads and tracking
- The App is free and supported by Google AdMob banner ads, shown only at the bottom of the home and collection screens — never while solving problems.
- Every ad request is tagged as child-directed and under the age of consent, requests only general-audience (G) ads, and does not use ad personalization.
- The App therefore does not request App Tracking Transparency (ATT) permission, does not show personalized ads based on the IDFA, and does not track you across other apps or websites.
4. International transfer
Information may be transferred outside your country when using the services above.
- Recipient: Google LLC (contact: https://support.google.com/policies)
- Countries: the United States and other countries where Google operates data centers
- Items: the information in section 2
- When and how: sent over the network while using the App
- Purpose: usage statistics, error analysis, and ads
- Retention: according to each service's retention policy
If you do not want this transfer, you can stop using and delete the App. No further information is sent after deletion.
More about how Google handles data: Firebase Privacy, How Google uses information from apps that use its services, Google Privacy Policy
5. Children's privacy
The App is designed so children can use it, and it does not collect information that directly identifies a child. Settings can only be opened after a grown-up check (a math problem). Parents or guardians may contact us below to review or delete information.
6. Your rights
- Delete all data stored on the device: delete the App
- Stop sending analytics, diagnostics, and ad information: delete the App
- Request deletion of information sent to Google: contact us by email
We cannot access information stored on your device, so you can delete it yourself by deleting the App.
7. Sharing with third parties
Apart from the transfers in section 2, the App does not share your information with third parties.
8. Contact
- Operator: Jinyeoung Kang
- Email: derricksummerai@gmail.com
9. Changes to this policy
If this policy changes, we will post the update on this page with a new effective date.