Angle Meter PRO is a utility tool that helps you measure angles or slopes with ease. It offers two modes of measurement - direct surface measurement and distance measurement. With the direct surface measurement, you can measure the angle of a surface with respect to the horizontal axis. On the other hand, the distance measurement allows you to measure the angle of a target away from you, using the camera aperture as a reference line.

The app features real-time display of angle values, ranging from 0 to 90 degrees, and supports measuring angles with the camera mode. You can also take a screenshot of your measurement to save it for future reference. Additionally, the app offers a level meter that allows you to measure the degree of tilt in the vertical plane. The measurements in each axis are locked to the screen, making it easier to measure.

Overall, Angle Meter PRO is a handy tool for anyone who needs to measure angles or slopes. It is user-friendly and offers accurate measurements. With its various features, it can be used in different scenarios, making it a versatile tool to have on your iPhone.