This is a terrible app. First of all it charges you more than $70 because it charges you for the whole year all at once. It is terrible at reading PDFs on the app and only really works well through the website. It constantly stops when you leave auto-scroll on and if your PDF is even a little bit unclear, it will constantly get words wrong. Also the thing is incredibly buggy and sometimes won't even let you upload pdfs and will not tell you why. Don't waste ur money.