Last updated: July 2026
ChronoWorld ("the app") is a 3D interactive history and exploration app. This page explains what information the app collects, how it is used, and the choices you have. We designed ChronoWorld to work with as little personal data as possible.
Information stored only on your device (never sent to us):
None of the above ever leaves your device or is visible to us. There is no user account or login in ChronoWorld, so we have no way to identify you personally from this data.
Information collected automatically:
ChronoWorld shows ads through Google AdMob to support the app's development. AdMob may use advertising identifiers and other technical data to show ads and measure their performance.
If you are located in the European Economic Area (EEA), UK, or Switzerland, you will be shown a consent form when you first open the app, letting you choose whether to allow personalized ads. You can change this choice at any time from Profile → Ad Privacy Options inside the app.
You can learn more about how Google uses data from apps that use its services here: https://policies.google.com/technologies/partner-sites
The historical topics, images, and 3D models shown in the app are stored in our Firestore database and delivered to your device when you browse the app. This content is publicly readable by the app and is not tied to your identity in any way.
We do not sell your data. Information is only shared with the following service providers, solely to operate the app:
ChronoWorld is not directed at children under 13, and we do not knowingly collect personal information from children.
ChronoWorld does not use accounts, so there is nothing to delete on our servers on your behalf — every piece of personal data the app stores (favorites, achievements, reading progress, search history, offline downloads, and appearance preference) is saved only on your own device, never on our servers.
To delete all of this data immediately, do either of the following:
What is not deleted by these steps: anonymized, aggregated analytics events already sent to Google Analytics prior to deletion (these contain no personal identifiers and cannot be linked back to you), and any advertising identifier data already processed by Google AdMob under Google's own retention policies.
We may update this policy from time to time. Changes will be posted on this page with an updated revision date.
If you have questions about this privacy policy, you can reach us at: ebajour@gmail.com