Privacy Policy
Last updated November 11, 2026
BooksOnFly turns photos of books into listings for eBay and Amazon. This page says, in plain words, what we keep and what we do with it.
Your eBay and Amazon accounts
BooksOnFly never connects to your eBay or Amazon account. We never ask for, see or store your eBay or Amazon password, sign-in codes or account access. The app makes an upload file. You upload that file to eBay or Amazon yourself.
What we store
- Your email address and a scrambled (hashed) password for BooksOnFly.
- The photos you add, the listings the app writes for you, and your shipping and return settings.
- If you sell on Amazon: the blank Amazon spreadsheet template you add, so the app can fill it in for you.
- Your plan, and a count of the listings written for you.
- Messages you send to the help chat, long enough to answer them.
How it is used
- Your photos and notes are sent to Anthropic (the maker of the Claude AI) to identify the books and write the listing.
- When you choose “Not sure” for an item type or a set, the AI may also search the web for book information. eBay is excluded from that search.
- Price suggestions are the AI's starting estimates. They are not live market data.
- eBay upload files contain private links to your listing photos so eBay can copy them when you upload the file. The links are long random addresses that cannot be guessed.
- If you subscribe, your payment is handled by Stripe. BooksOnFly never sees or stores your card number.
- If you ask us to email you a file or a password link, the email is sent through our email provider.
- We don't sell your information, and we don't use it for advertising.
How long we keep things
- Deleting a listing removes it and its photos right away.
- To save space, extra photos are removed 45 days after a listing goes into an upload file (the first photo is kept so you can recognise the listing). Amazon listings keep only their first photo once they are in a file.
- If you close your account, we delete your listings, photos, settings and template. Ask at support@booksonfly.com.
Cookies
We use one cookie to keep you signed in. We don't use advertising or tracking cookies.
Children
BooksOnFly is for adults who sell online. It is not meant for anyone under 18.
Questions
Email support@booksonfly.com, or use the free 24/7 help chat. If this policy changes, we'll post the new version here with a new date.