One star for the idea and one for the app starting and looking nice, but unfortunately I must report that pressing 'Scanner' in the main view crashes the app on my device. I've also tried pressing 'Open Scanner' from the Gallery, but that instead opens the main view again. Also I'm a lefty, which means wet ink is a real pain to me.
Love Bambook but the app... Not so much. I don't get the crop functions that are shown in the screenshots in the play store. Using S4 mini.
Just does not work. It does not recognize the pages of its own book. I switched back to OfficeLens, which did the trick.