Last updated July 11, 2026
This Cookie Policy explains how Vruyr Saribekyan, an individual developer operating the Christians mobile application and related websites ("we," "us," or "our"), uses cookies and similar technologies when you use our Services.
This policy should be read alongside our Privacy Policy, which provides fuller information about how we collect, use, and protect your personal data.
Cookies are small text files stored on your device when you visit a website. In mobile applications, equivalent technologies are used instead of browser cookies, including:
| Technology / identifier | Purpose | Essential? |
|---|---|---|
| Session tokens and refresh tokens | Authentication and maintaining your login session across app restarts | Yes — cannot be disabled |
| Local preference storage | Remembering your language, timezone, and app settings | Yes — cannot be disabled |
| Locally cached ad-region data | Storing the country code detected from your IP address to select the correct advertising provider (Google AdMob or Yandex Advertising); cached on-device for up to 7 days | Functional |
| Firebase Cloud Messaging (FCM) token | Delivering push notifications (messages, calls, social alerts) | Required for notifications — can be disabled via device notification settings |
| VoIP push token (iOS) | Delivering incoming call alerts on iOS | Required for call alerts |
| Google AdMob SDK identifiers (GAID / IDFA) | Delivering advertising to users outside Russia; personalized ads require consent. We also use cookies and local storage to detect invalid traffic and prevent fraud, which is carried out on the basis of our legitimate interest in ensuring the security of the service. | No (for ad personalization) Yes (for fraud prevention) |
| Yandex Advertising Network SDK identifiers | Delivering advertising to users in Russia | No — requires consent where applicable |
| Diagnostics and error data | Detecting crashes, errors, and performance issues to improve reliability | Functional |
The app selects an advertising provider based on your country, which is detected from your IP address via a geo-IP lookup. If you are in Russia, Yandex Advertising Network is used; in all other regions, Google AdMob is used. The resulting country code is cached locally on your device for up to 7 days.
Personalized advertising — which uses advertising identifiers such as GAID or IDFA — is shown only where you have given consent:
For users in the European Economic Area (EEA) and United Kingdom, we rely on your consent before placing or accessing non-essential technologies on your device, including advertising identifiers and third-party SDK identifiers used for personalized advertising. Essential technologies (authentication, session management, preferences) are used on the basis of our legitimate interest in operating the Services and, where applicable, as strictly necessary to provide the service you have requested.
However, for security and fraud prevention purposes (such as detecting invalid traffic), we may use a limited set of technical data (including cookies and local storage) when requesting ads. This is necessary to ensure the proper operation of advertising mechanisms and protect the interests of our users and partners, and is done on the basis of our legitimate interest.
You can withdraw or update your advertising consent at any time via Settings → Privacy & Data → Privacy Preferences in the app.
Essential technologies required for account functionality — such as session tokens and preference storage — cannot be disabled while using the Services.
We may update this Cookie Policy from time to time to reflect legal, technical, or operational changes. When we do, we will revise the "Last updated" date at the top of this page. For material changes, we will provide additional notice via the app or by email.
If you have questions about this Cookie Policy or our use of tracking technologies, contact: