1. What Are Cookies?

Cookies are small text files that are stored on your device when you visit a website. They are widely used to make websites work efficiently and to provide information to the website owner. Cookies cannot run programs or deliver viruses to your device.

We also use similar technologies such as localStorage (used to remember your cookie consent preference) and session storage. In this policy, we refer to all such technologies as "cookies" for simplicity.

2. How We Use Cookies

nextprime.app uses a minimal number of cookies. The prime number computation tool runs entirely in your browser — we do not use cookies to track what numbers you search for.

3. Types of Cookies We Use

3.1 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 logging in or setting cookie preferences.

Cookie	Purpose	Duration	Type
np_cookie_consent	Stores your cookie consent preferences	1 year	Required
np_session	Maintains your login session (API users only)	Session	Required
np_csrf	Security token to prevent cross-site request forgery	Session	Required

3.2 Analytics Cookies

These optional cookies help us understand how visitors interact with nextprime.app. They collect anonymised data and do not identify individual users. We only activate these if you consent.

Cookie	Purpose	Duration	Type
_np_analytics	Anonymous page view and interaction tracking	30 days	Optional

3.3 Marketing Cookies

We currently do not use marketing or advertising cookies. nextprime.app does not display advertisements. This section is included for transparency.

4. Third-Party Cookies

When you use Google Sign-In, Google may set cookies on your device. These are governed by Google's Privacy Policy ↗. When you make a payment, Stripe may set cookies. These are governed by Stripe's Privacy Policy ↗.

5. Managing Your Cookie Preferences

You can manage your cookie preferences at any time:

• Cookie Settings panel: Click the button below or the "Cookie Settings" link in the footer
• Browser settings: Most browsers allow you to block or delete cookies. Note that blocking necessary cookies may affect site functionality
• Opt-out tools: For analytics, you can use browser privacy mode or ad blockers

⚙ Open Cookie Settings

6. Legal Basis

Necessary cookies are used on the basis of our legitimate interest (GDPR Art. 6(1)(f)) in operating a functional and secure website. Optional analytics cookies are used only on the basis of your consent (GDPR Art. 6(1)(a)), which you can withdraw at any time.

7. Changes to This Policy

We may update this Cookie Policy from time to time. The "Last updated" date at the top of this page reflects the most recent revision. We will notify you of material changes via the website or by email.