Abstract: A method of determining a flow rate of a gas leak in a pressurized gas system includes applying a liquid soap solution to a region of a component, and capturing, via a camera of a portable electronic device, a plurality of sequential images of bubbles formed in the region by an interaction between the liquid soap solution and a gas leak from the component. The plurality of images are analyzed by a first algorithm executed by a processor to determine a total area of the bubbles in the region produced by the leak. A flow rate of the gas leak is then determined via a second algorithm executed by the processor based on the total area of bubbles in the region, a size of the component, and a pressure of the gas.