Amanda > Status Update

Book friends with children.....best practices for setting up accounts for them? I have a 9yo that I want to setup with a kindle app on her iPad and download freebies. Right now she uses my apple ID so when I download the Kindle app all of my content is on there. Eek! I know Apple and Amazon offer family sharing - do you use that? Or do you have separate accounts for each? Need to keep my books far, far away :)