Mechanical Assistant is a free Android application designed to help engineers and designers with their day-to-day tasks. Developed by Vedran Majnaric, this app falls under the Business & Productivity category. It is a comprehensive tool that offers a wide range of features to help users with their mechanical calculations, unit conversions, and steel database searches.

The app's main features include the ability to calculate the weight of various shapes and send the results to a calculator or unit converter. The app also offers calculations for bending sheet metal, a steel database, and the ability to search for steel by color. Additionally, the app includes a calculator, a threads section that covers a variety of thread types (Metric, USA, British, Trapezoidal, Buttress, Pipe, Knuckle), a unit converter, and a bearings section. With such an extensive range of features, Mechanical Assistant is an ideal tool for engineers and designers looking for an all-in-one solution for their mechanical calculations.