IDOUDO Privacy Policy

Effective date: August 24, 2026
App: IDOUDO (com.mawatarishoji.idoudopractice)

IDOUDO is a movable-Do sight-reading practice app developed and operated by 馬渡商事. The app is designed not to collect users' personal information.

1. Personal Information

The app does not collect personal information.

  • It does not ask for your name, email address, location, or similar information.
  • Profile nicknames remain on your device and are never transmitted.
  • No analytics, behavior tracking, or advertising SDKs are used.
  • No ads are displayed, and no usage data is sent to external servers.

2. News Data

To show announcements about new drills and updates, the app periodically retrieves a static news file from mawatarik.com. This request contains no user or device identifier. Downloaded news data is used only for display and may be cached on the device for offline use.

3. Practice Records

Profiles and practice records, including drill results, response times, mistakes, and dates, are stored only on your device. They are not synced to iCloud, and the developer cannot access them. Deleting the app also deletes these records.

4. In-App Purchases

Purchases that unlock additional keys are processed through Apple's In-App Purchase system. Apple processes payment and manages purchase history through your Apple Account. The developer does not receive credit card or other payment details.

5. Sharing

Practice results can be shared using the standard iOS share sheet. Content is sent only to the app or service you select. IDOUDO never posts automatically to an external service.

6. External Links

The app may open Apple's Standard End User License Agreement, this policy, the support page, or other pages on our website in your browser. Privacy practices on third-party services are governed by their respective policies.

7. Changes to This Policy

Any changes to this policy will be published on this page. We will update the policy if a new feature changes how information is handled.

8. Contact

For questions about this policy, contact info@mawatarik.com.

Related page: IDOUDO Support