The app looks good at first glance but soon gets frustrating. You cannot scroll on a page and although the page breaks are slick the bottom line of text on each page is often missing. You can search for the missing text by changing from portrait to landscape or by changing the font size with the sticky font facility in the top right corner. I soon lost interest and the inclination to struggle through articles, a disappointing effort from such a notable publication.
This is at best a child's toy and at worst a waste of money. If you want to learn riffs on the guitar go elsewhere. If you want to learn single note melodies for 'Name that Tune', then this may be of use!