Smart Level, from Smart Tools co., is an Android utility app that measures the angle or slope of any object simply and accurately. The app is part of the Smart Tools collection, and it is the first set. Smart Level is perfect for measuring angles in a variety of situations, whether it's measuring the slope of a roof, checking if a surface is level, or measuring the angle of a picture frame.

The app features a surface level (bubble level) and a spirit level (clinometer) that make it easy to measure angles. It also includes zero calibration and tilt units, such as degree, percent, radian, and roof pitch. Additionally, Smart Level has a lock screen feature, and it's designed with a material design interface that is easy to use.

If you upgrade to the Pro version, you will enjoy extra features such as no ads, a ruler, protractor, and thread pitch. If you want more tools, you can download Smart Ruler Pro and Smart Tools package.

Overall, Smart Level is an excellent angle measurement app that is both accurate and simple to use. For more information, you can watch YouTube videos and visit the developer's blog.