Pretty basic

Basically for creating simple books in landscape mode with preset font sizes, preset page size/layout. Would be great for kids books, cook books, books of photos, handouts, etc. Textbooks, as is mentioned in the write-up for the app, would be difficult and time consuming to create, as text does not flow from one page to the next. Each page will take only so many characters at the then determined font size SO if you change the font size the page formatting / layout gets all screwed up and you must either delete some or add more to put the page in order.

Best to use MS Word and then Atlantis to create a "real" ebook in the ePub format; one that allows the reader to set options like font size, justification to their liking / needs.

Real eNaR about Book Creator for iPad, v1.9