The app is basically two parts. One instructional video and one very clear timer included walk-through. However, the app isn't designed for SOME phones. (Mine: Samsung Galaxy J7) The video portion played where half of it was off screen; important parts. The testing portion had parts of the text and images covered with the BACK|NEXT buttons. Also: DO NOT BACK OUT OF APP. lol. no seriously, don't. I suggest giving a run through for BOTH PARTS *BEFORE*YOU*START*!!!