Cog Dunes

Privacy Policy — Cog Dunes

Last updated: July 13, 2026

Cog Dunes (the “App”, the “Game”) is a build-and-watch sand-machine puzzle game developed by Birkin Apps (“we”, “us”). This Privacy Policy explains our approach to your data. The short version: Cog Dunes does not collect any data at all.

Summary

Data we collect

None. The App has no server of ours to talk to and sends us nothing.

On-device data

Your settings (such as language and sound) and your level progress (completed levels and stars) are stored locally on your device using shared_preferences. This data never leaves your device and is never transmitted to us or to anyone else. Uninstalling the App deletes it.

No ads, no tracking

Cog Dunes shows no advertisements and performs no tracking of any kind. It does not use your device’s advertising identifier, so no App Tracking Transparency (ATT) prompt is needed on iOS.

Third parties

The App integrates no third-party data services. Downloading the App is handled by the app store you obtained it from (Apple App Store or Google Play), under that store’s own privacy policy.

Children

Because the App collects no data and shows no ads, it is safe for players of all ages, consistent with COPPA and GDPR-K.

Your rights (GDPR, CCPA/CPRA and others)

Since we hold no data about you, there is nothing for us to access, correct, delete, or sell. You can erase all local game data at any time by uninstalling the App.

Store privacy disclosures

Consistent with Apple’s App Privacy and Google Play’s Data Safety sections, Cog Dunes is declared as: Data Not Collected.

Changes

If a future update ever changes this (for example, by adding optional analytics), we will update this Policy first and reflect it in the “Last updated” date and in the store disclosures.

Contact

Birkin Apps — support@birkinapps.com