Cookie Policy
Last updated: 14 June 2026
What Are Cookies?
Cookies are small text files that are placed on your device when you visit our website. They help us provide you with a better experience by remembering your preferences and understanding how you use our site.
Types of Cookies We Use
Essential Cookies Only
We only use essential cookies that are necessary for the website to function. These cannot be disabled and include:
- Authentication cookies - Keep you logged in securely
- Security cookies - Protect against fraud and abuse
- Session cookies - Remember your preferences during your visit
- Device management cookies - Track active devices (for paid tiers)
Legal basis: Legitimate interest (necessary for service delivery)
No Tracking Cookies
We use PostHog Analytics, a privacy-focused analytics platform that:
- Does not use cookies - No consent banner required
- Does not track individuals - Only aggregate statistics
- Does not collect personal data - GDPR compliant by design
- Does not share data - All data stays on PostHog's secure servers
PostHog helps us understand which games are popular, which features are used, and how to improve the platform - all without compromising your privacy.
Interview Practice — No Additional Cookies
The Interview Practice feature does not set any additional cookies. Video uploads go directly from your browser to Cloudflare R2 using short-lived signed URLs — no new cookie is created during this process. Your existing authentication cookie is used only to authorise the session creation and completion API calls.
How We Use Game & Interview Statistics
When you complete a game, we store the following in our database:
- The full game state — every trial, your responses, and timing data
- Raw score, normalised score, and percentile ranking
- Session start/end times and duration
- Game-specific metrics (e.g., reaction time, accuracy)
- A generated feedback report with strengths, weaknesses, and recommendations (generated on-demand, not stored)
When you complete an Interview Practice session, we store:
- AI-generated transcript of your spoken answers
- Content scores (relevance, clarity, structure) and non-verbal scores (eye contact, posture, confidence)
- Detected filler words, improvement suggestions, and an overall score
- Interview credit transaction records
This data is stored in our secure database and is only accessible to you. We use it to:
- Show you your scores, progress charts, and improvement trends
- Generate personalised feedback and recommendations
- Calculate your percentile ranking against anonymised population benchmarks
- Track your daily practice streak and personal best
- Display interview feedback and history in your dashboard
Game session data is automatically deleted after 2 years. Interview feedback and transcripts are deleted after 2 years or when you delete your account. Raw interview video files are deleted from cloud storage as soon as AI processing completes — they are never retained beyond 24 hours.
Third-Party Services
We use the following third-party services:
- Stripe - Payment processing (essential for checkout, may set cookies)
- Supabase - Authentication and database services (essential, may set cookies)
- PostHog - Privacy-focused analytics (no cookies, no tracking)
- Cloudflare R2 - Cloud storage for interview video uploads (no cookies set — uploads use signed URLs, not session cookies)
- OpenAI - AI processing for interview feedback (server-side only — no cookies set in your browser)
No Cookie Banner Needed
Since we only use essential cookies and cookieless analytics, we do not require a cookie consent banner under GDPR. Essential cookies are necessary for the service to function and do not require consent.
Cookie Retention
Essential cookies have the following retention periods:
- Session cookies - Deleted when you close your browser
- Authentication cookies - Up to 30 days
- Device management cookies - Up to 1 year
You can clear cookies at any time using your browser settings, but this may log you out and reset your preferences.
Your Rights
Under GDPR and other privacy laws, you have the right to:
- Access your data
- Correct inaccurate data
- Request deletion of your data
- Object to data processing
- Export your data (data portability)
- Withdraw consent at any time
Contact Us
If you have questions about our cookie policy, please contact us at:
- Email: support@cogniprep.app
Changes to This Policy
We may update this cookie policy from time to time. We will notify you of any significant changes by posting a notice on our website or sending you an email.