Last updated: 2026-06-27
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Checked June 27, 2026. This page was compared with the public App Store and Google Play listings. Where a store privacy or data-safety label was visible, it said the developer does not collect user data.
Accurate app behavior: Recovery logs, photos, datasheet cache, and optional location sorting stay local. Maps and optional NOAA NGS datasheet downloads are handled by their providers; purchase or restore is handled by Apple App Store or Google Play. No accounts, ads, analytics, tracking, or developer backend are used.
Markline is an offline survey-mark reference app. It has no account, no ads, no analytics, and stores your recovery logs on your device.
The app stores the information you create or choose to save in the app on your device. This may include settings, notes, photos, documents, journal entries, study material, or other app-specific content.
The app does not require an account and does not collect your name, email address, phone number, advertising identifiers, contacts, or usage analytics for the developer.
The app does not include third-party analytics, advertising, tracking, or cross-app tracking SDKs.
The app is designed to work locally or offline where possible. If you choose to open a link, use a store purchase, fetch public reference data, or use a map or government data service, that request is handled by the relevant service and its own privacy policy.
If you export, share, or back up app content, you choose the destination. That destination may have its own privacy practices.
The app does not knowingly collect personal information from children.
Privacy questions: rizkcorsight@rizkcorsight.com