Square to Round Developer is a free Android app developed by Gellis apps under the category of Utilities & Tools. It is designed to help fabricators quickly and easily develop patterns for square to rounds, rectangle to rounds, rounds to squares, and round to rectangles. The app is especially helpful to workshop managers and fabricators who need to calculate developed lengths. With this app, users can enter the required outside dimensions and material thickness, select the type of square to round they need to develop and press "develop." The developed pattern can then be marked onto the plate for cutting and shaping. The app also includes instructions on how to mark out completely by hand and how to mark the developed pattern onto the plate.

As a fabricator of 40+ years, the developer created this app to save time and effort for other fabricators who need to calculate developed lengths. The app is easy to use and is a useful tool for fabricators who need to develop patterns for various shapes. Users can expect to save time and effort with this app. The developer is open to feedback and suggestions to improve the app in future versions.