Cookie Policy

Last updated: August 2026

1. What Are Cookies?

Cookies are small text files that are placed on your device when you visit a website. They are widely used to make websites work more efficiently, to provide a better user experience, and to give website owners useful information about how their site is being used.

Similar technologies such as pixels, web beacons, and local storage serve comparable purposes. When we refer to “cookies” in this policy, we include all such technologies.

2. How We Use Cookies

We use cookies and similar technologies on our website (zevlian.com) for the following purposes:

  • To ensure our website functions correctly
  • To remember your preferences and settings
  • To understand how visitors interact with our website so we can improve it
  • To deliver relevant advertisements and measure their effectiveness

3. Types of Cookies We Use

Strictly Necessary Cookies

These cookies are essential for the website to function and cannot be switched off. They are usually set in response to actions you take such as setting your privacy preferences or filling in forms. You can set your browser to block these cookies, but some parts of the site may not work.

CookiePurposeDuration
zevlian_cookie_consentStores your cookie consent preferencesPersistent

Functional Cookies

These cookies enable enhanced functionality and personalisation, such as remembering your language preference or region. If you do not allow these cookies, some or all of these features may not function properly.

Performance / Analytics Cookies

These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us understand which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated.

ProviderPurposePrivacy Policy
Google Analytics 4Website traffic analysis, page views, user journey trackingGoogle Privacy
Google Tag ManagerTag management for analytics and marketing scriptsGoogle Privacy

Marketing Cookies

These cookies may be set through our site by our advertising partners. They may be used to build a profile of your interests and show you relevant ads on other sites. They do not store personal information directly, but are based on uniquely identifying your browser and device.

ProviderPurposePrivacy Policy
Meta (Facebook) PixelAd conversion tracking, audience building, retargetingMeta Privacy

4. Mobile Application

The Zevlian mobile app does not use cookies. However, the app uses the following technologies for analytics and crash reporting:

TechnologyPurposeData Collected
Firebase AnalyticsApp usage analytics, screen views, user engagementAnonymous usage data, device type, OS version, app version
Firebase CrashlyticsCrash reporting and stability monitoringCrash logs, device state at time of crash, stack traces

You can opt out of analytics data collection through the app settings. Firebase Analytics uses a randomly generated instance ID to identify unique app installations — it does not use advertising identifiers unless you separately grant permission.

5. Managing Your Cookie Preferences

When you first visit our website, you will be presented with a cookie consent banner that allows you to accept or reject non-essential cookies. You can change your preferences at any time by clicking the “Manage cookies” link in the footer of any page.

You can also control cookies through your browser settings. Most browsers allow you to:

  • View what cookies are stored and delete them individually
  • Block third-party cookies
  • Block cookies from specific sites
  • Block all cookies
  • Delete all cookies when you close your browser

Please note that blocking all cookies may affect the functionality of our website and other websites you visit.

6. Changes to This Policy

We may update this Cookie Policy from time to time. When we make changes, we will update the “Last updated” date at the top of this page. We encourage you to review this policy periodically.

7. Contact Us

If you have any questions about our use of cookies, please contact us:

One Stone sp. z o.o.

Registered in Poland

Email: [email protected]