The free version allows you to input only 50 books so I gave it a try and then upgraded to pro. I had a few hiccups with importing my typed book list so I contacted their support - who was very detailed and very supportive.
With the scan feature sometimes the isbn is not in the bar code - so you may have to look up using an in app search - which is also super quick and easy.
I highly recommend and now can export list to my friends and we can start a library share for our children! Well worth the $5 for pro!
MomAndPeanut about BookBuddy: My Library Manager, v7.7.0