SteelDesign is a free Android app developed by LetsConstruct that helps you determine the elastic stresses of a beam at the top and in the middle based on the given forces. The app utilizes the theory of ‘Huber-Hencky’ and includes axial force, double shear, and double bending.

One of the notable features of SteelDesign is its ability to input Mx, My, and Mz with both US and metric units. You can also select an arbitrary beam from the Engineering Libraries app and get outputs of stresses and unity check. Moreover, the app can be integrated with the Frame Design 2D app and provides export possibilities and graphs.

Overall, SteelDesign is a must-have app for anyone who deals with beam stresses and wants to calculate the elastic stresses with ease. The app is user-friendly, accurate, and free to use.