Our daily work is comprised of testing a product and improve its quality. However, here and there, we can come to a state where we find a need to build a tool, that can make our work easierbetter. I will share from my experience when I found myself in a situation where building a tool was needed. We will start with a web application that allows you to know when a food delivery you ordered arrives to the office, and then we will focus on a tool that test the performance of an app from the UI side. We will do a live demo for both of them.