vapCycleCalc is a simple app that was created to help students analyze Rankine cycles. The idea behind the app is to provide a simple and accessible tool that makes the analysis process easier and more intuitive. vapCycleCalc has two key features, the first feature allows you to draw a Rankine cycle on your mobile device (right now it is limited to just simple Rankine cycle), providing a clear visual representation of the cycle. The second feature includes is a calculator that help you analyze the cycle, gain time and look for the values that results in a good efficiency.