Last updated: June 12, 2026
1. Introduction
Welcome to Spine, operated by Stupid Human Ltd (Company No. 16995751, registered in England and Wales) ("we," "our," or "us"). We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and safeguard your information when you use our reading tracker application.
2. Information We Collect
Account Information
When you create an account, we collect your email address, display name, and username. If you sign in with Google or Apple, we receive basic profile information from those services.
Reading Data
We store information about books you add to your library, including titles, authors, your ratings, reviews, reading status, and dates. This data is essential to provide our core service.
Usage Data
We collect anonymous analytics about how you use the app to improve our service. This includes pages visited, features used, and general interaction patterns.
Imported Data
If you import data from Goodreads or StoryGraph, we process and store that data to populate your library.
3. How We Use Your Information
- To provide and maintain our service
- To personalize your experience and generate reading cards
- To enable sharing features and public profiles
- To send you updates about your account (if you opt in)
- To improve our app through anonymous analytics
- To prevent fraud and ensure security
4. Sharing Your Information
We do not sell your personal information. We may share data with:
- Service providers: Companies that help us operate (hosting, analytics, email)
- Public features: If you share a card or have a public profile, that content is publicly visible
- Legal requirements: When required by law or to protect our rights
5. Your Privacy Controls
You have control over your data:
- Make your profile private or public in Settings
- Choose what reading activity is visible to others
- Control email notifications
- Delete your account and all associated data at any time
6. Data Security
We implement appropriate security measures to protect your data, including encryption in transit (HTTPS) and at rest, secure authentication, and regular security audits. However, no method of transmission over the internet is 100% secure.
7. Third-Party Services
Our app uses third-party services that may collect data:
- Supabase: Database and authentication
- Google Books API: Book metadata and covers
- Unsplash: Background images for cards
- Vercel: Hosting
- PostHog: Anonymous analytics
- Stripe: Payment processing
- RevenueCat: Subscription management
Each service has its own privacy policy governing their data practices.
8. Children's Privacy
Our service is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us.
9. Changes to This Policy
We may update this privacy policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.
10. Contact Us
If you have any questions about this privacy policy, please contact us at [email protected]
Spine is operated by Stupid Human, a company registered in England and Wales (Company No. 16995751). Registered office: 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ.