Rafter Calculator Free, developed by Igor Lyakshev, is a handy tool for anyone working in the construction industry or dealing with roof measurements. This Android application helps calculate the required measurements for rafters, whether it's by roof height or roof angle. The interface is user-friendly and easy to navigate, with clear instructions on how to use the app.

The app allows you to enter your measurements in both metric and feet & inch systems. You can press the letters on the picture to enter your size, making it easy and convenient to use. Overall, Rafter Calculator Free is an excellent utility tool for anyone who needs to calculate rafter measurements. It is available for free, making it accessible for everyone.