I read this book using the iGist app to see what a student's experience would be like. The story was engaging, and the interactions with the app were a lot of fun. Unfortunately, I have been unable to locate a sequel (not sure if it has been written, but I know it had been planned). Another drawback to the app was it did not register when I had actually finished the book, so I never got to see what was supposed to happen with that. I know this would have been a major disappointment to my students.
Overall recommend the book for students reading in grades 4 through 8. The heroine Emi, is relatable and realistic in terms of her reactions to her situations. Fingers crossed the series continues.