Cookie & Browser Storage Policy
Last updated: July 17, 2026
1. What BrainBuzz uses
BrainBuzz uses limited browser storage to provide account access, security, user-requested preferences, offline-capable app features, and privacy choices. We do not use advertising cookies, cross-site tracking, session replay, or behavioral advertising.
2. Necessary and functional storage
| Storage | Purpose | Typical duration |
|---|---|---|
| auth | Keeps a signed-in user authenticated and stores the minimum account state needed by the app. | Until logout, account state is cleared, or browser storage is deleted. |
| darkMode | Remembers the display theme selected by the user. | Until changed or browser storage is deleted. |
| brainbuzz:privacy-consent | Records an analytics preference so BrainBuzz can honor an opt-out. | Up to 180 days, or until the policy version changes. |
| Application cache | Caches app code, images, fonts, and short-lived API responses for performance and offline-capable features. Account-changing API requests are never cached. | Varies by file; outdated caches are removed automatically. |
Blocking necessary storage may prevent sign-in, saved preferences, or offline-capable features from working. It is not used for advertising.
3. Aggregate analytics
BrainBuzz loads Cloudflare Web Analytics unless you turn analytics off through Privacy Choices. Cloudflare provides aggregate page views, referrers, general browser and country information, and performance measurements. BrainBuzz configures no custom behavioral events and does not send names, email addresses, account or student IDs, form contents, or puzzle content. Cloudflare Web Analytics does not place cookies, use browser storage, or fingerprint people to create individual visitor profiles.
You can turn analytics off without losing access to BrainBuzz and can change your choice at any time. BrainBuzz stores that preference solely to honor your selection.
4. Payments
When a user initiates checkout or manages a subscription, BrainBuzz loads Paddle's payment service. Paddle may use cookies or similar storage needed for checkout, fraud prevention, security, and payment processing. Paddle controls its own payment-domain storage and retention. BrainBuzz does not use Paddle storage for advertising.
5. Browser controls and contact
You can delete or block browser storage through your browser settings, although necessary features may stop working. To ask a privacy question or exercise a privacy right, use the BrainBuzz contact form. See the Privacy Policy for broader information about personal data.