Break Reader is a must-have tool if you are a golfer. The name of the app tells what it does. Yes, it reads the slope once you place iPhone on greens. You can figure out the break from reading and arrow on the screen. You should know it won’t advise putting direction and speed, but it will give you idea how green breaks. All is up to you how to use the information from this app.
Before you start use this app, you need to calibrate it. Place the iPhone on known flat surface and touch calibration button. If you want to lock the reading, you can always touch lock button.
As you know, you are not allowed to use this app in certain condition such as tournaments. Hope this app can help your putting stroke.