The app is extremely simple. I cannot organize any of it myself. Such as creating a shelf/collection like I can on audible or Kindle. That alone to me is worth a few bucks since I have 600+ books in one app. Prices aren't really that cheap either. If I can get the book under my Kindle Unlimited then the audio is usually just $7.49 ad on. The only time I find ones that are worth it is if I havent heard of the author, or they're doing promotional/clearance sales before a new book comes out.