Last updated: 25 September 2026
Crossmath ("the app") is a number puzzle game published by Dewdew ("we", "us"). This policy explains what information the app collects and how it is used.
The app does not require an account, and we do not collect your name, email address, or precise location. Game progress, coin balance, settings, and daily-challenge streak are stored only on your device (local storage) and are never sent to us.
The app shows ads to keep it free. Ads are served and mediated through Google AdMob, which may include ads from Google and from third-party ad networks connected through AdMob's mediation, including Meta Audience Network (Meta Platforms, Inc.).
These partners may collect and process, for the purpose of serving, measuring, and (where permitted) personalising ads:
Advertising identifiers (such as the Android Advertising ID / GAID)
IP address and approximate (non-precise) location derived from it
Device information (model, OS version, language, time zone)
App usage and interaction data related to ads (impressions, clicks)
Each partner processes this data under its own privacy policy:
Google AdMob — policies.google.com/technologies/ads
Meta Audience Network — facebook.com/policies/ads
Ad personalisation: In the European Economic Area, the United Kingdom, Switzerland, and other regions where required, we ask for your consent before personalised ads are shown, through an in-app consent form. You can change your choice at any time from the app's Settings.
Advertising ID: You can reset or delete your Android Advertising ID, or opt out of ad personalisation at the device level, from Settings > Privacy > Ads on your Android device.
Meta-specific controls: Review Meta's ad settings at facebook.com/adpreferences/ad_settings or use youradchoices.com.
The app is not directed to children under 13, and we do not knowingly collect personal information from children. If we learn that a child under 13 has provided us with personal information, we will take steps to delete it.
Because game progress is stored only on your device, uninstalling the app removes it. Data processed by our ad partners is retained and deleted according to their own policies, linked above.
A summary of the data this app and its ad partners may collect is also available in the app's Google Play Data safety section.
We may update this policy from time to time. The latest version will always be available at this page, and the "Last updated" date above will reflect the most recent change.
If you have questions about this policy or how your data is handled, contact us at [asril.rochman@gmail.com].