Both Apple and Google require app developers who use in-app purchasing to pay fees of approximately 30% of the transaction. For this reason, it's not possible to purchase Bookshop.org Ebooks in-app.

We want that money to be used to support local booksehops instead, so the extra step of purchasing on the site and then returning to the app to read is required.

This helps us to maximise the commission that independent bookshops receive for each purchase.