Privacy Policy
Last updated: April 2026
Data Controller
BlueberryML Ltd
2nd Floor, College House, 17 King Edwards Road
Ruislip, London, HA4 7AE
United Kingdom
Contact: david@blueberryml.com
What Data We Collect
- Child's first name and age
- Learning progress and session history
- Session transcripts (voice-to-text)
- Parent's email address
- Payment information (processed by Stripe — we do not store card details)
Why We Collect It
To deliver the tutoring service: personalise sessions to your child, track learning progress, and show session reports to parents.
Third-Party Processors
- Google — Gemini Live API for voice tutoring
- AWS / Cloudflare — data storage and content delivery
- Stripe — payment processing
What We Don't Do
- We do not sell your data to third parties
- We do not use student conversations to train AI models
- We do not share data with advertisers
Your Rights (GDPR)
You have the right to:
- Access your data
- Rectify inaccurate data
- Erase your data
- Port your data to another service
- Object to processing
- Withdraw consent at any time
To exercise any of these rights, contact david@blueberryml.com.
Children's Data
ClassGrade is designed for use by children with parental consent. We apply additional safeguards to children's data, including limited data collection, restricted access, and regular review of stored data.
Cookies
We use privacy-first analytics (Plausible or PostHog) that do not require cookies for tracking. We do not use advertising cookies or third-party tracking scripts.
Contact
For any questions about this privacy policy or your data, contact us at david@blueberryml.com.