Who handles your data
Last updated: 21 October 2026
These are the companies that handle your data for NoBookEnds. Section 8 of our privacy policy explains what each kind of company receives and why. We change this page when we start or stop using one.
Processing agreement means the company handles your data for us, on our instructions. Its own terms means we use the company on its standard terms, so it decides what happens to what it receives, under its own privacy policy. Not yet confirmed means we haven't yet checked whether a processing agreement is in place. We'll update the row when we have.
| Company | What it does for us | Where | Processing agreement |
|---|---|---|---|
| Supabase | Our database, sign-in and file storage | Servers in Sweden | Not yet confirmed |
| Netlify | Runs our website and takes newsletter signups | United States | Not yet confirmed |
| Akismet | Checks website signups for spam | United States | Not yet confirmed |
| Apple | Sign in with Apple, and push notifications on iPhone | United States | No, its own terms |
| Continue with Google sign-in | United States | No, its own terms | |
| PostHog | Analytics | A US company, servers in the EU | Not yet confirmed |
| Anthropic, OpenAI and Google | AI features inside PostHog | United States | Not with us. PostHog says its agreement with them doesn't let them train their AI on your data |
| Sentry | Crash and error reports | A US company, servers in Germany | Not yet confirmed |
| Resend | Sends our email, including the newsletter | A US company, set up in its European region | Not yet confirmed |
| ImprovMX | Forwards email sent to hello@nobookends.app | A US company, receives email in France | No, its own terms |
| Google (Gmail) | Our email inbox | United States | No, its own terms |
| Expo | Push notifications and app updates | United States | Not yet confirmed |
| Google (Firebase Cloud Messaging) | Push notifications on Android | United States | No, its own terms |
| Google (Gemini) | Recognises books from your photos | United States | Not yet confirmed. Google may keep the photo under its own terms |
| Google (Books, Maps and Places) | Book lookups, area names and place suggestions | United States | Not yet confirmed |
| Open Library | Book lookups, with your identity not attached | United States | No, its own terms |
| ISBNdb | Book lookups, with your identity not attached | United States | No, its own terms |
| Stripe | Membership payments | Ireland, and the United States | Yes |
| Anthropic | Claude, the AI assistant that helps us build, run and support NoBookEnds | United States | No, its own terms. We have turned off the setting that lets Anthropic train its AI on our chats |
If something here doesn't answer your question, email hello@nobookends.app.