Calculations and local data
Your entries, results, preferences, and calculation history remain locally on your device. They are not sent to or accessible by Matinformatics. Device and operating-system backups are controlled by your Apple settings.
Purchases
Apple processes App Store and in-app purchases. Matinformatics does not receive or store payment-card credentials. The app may receive purchase status from Apple so it can unlock features you have purchased.
Third-party services
The app does not include advertising, tracking, analytics, or data-collecting third-party SDKs. If a future version introduces a service that changes these practices, this policy and the App Store privacy disclosures will be updated before release.
Support email and questions
If you email support, Matinformatics receives the information you choose to include so we can respond. This is separate from app telemetry and is kept only as long as needed to resolve the request or meet legal obligations. You may request deletion by emailing support@matinformatics.org.