Level & Ruler Pro (Free), developed by Softatics, is a versatile alignment tool for Android users. This free app is also known as a Spirit Level, Bubble Level, Torpedo Level, Construction Level, Carpenter's Level, and Level Tool. It can be used as a digital protractor, angle finder, inclinometer, and much more. It is ideal for aligning picture frames, tables, and anything that requires accurate alignment.

The app includes horizontal and vertical levels, which can be calibrated independently for maximum accuracy. It also has digital angle indicators to measure angles accurately. Furthermore, it comes with two rulers in inches and centimeters, which can be used to check the size of nails, bolts, screws, or drill bits, and measure the thickness of lumber. With its user-friendly interface and multiple features, Level & Ruler Pro (Free) is a must-have tool for anyone who needs to align objects accurately.