There are many digital design tools around they all look alike but do things a little different. I have explored through playing which one I think is most powerful. The tools I played around in are: Sketch, Figma, Adobe XD, Axure and Framer X. My conclusion is that it really depends on what you want to make which tool is the most suited. Overall in my case using sketch to make the screens and visual explorations and Framer X to make the final prototype is the best workflow. I have coding skills and Framer x allows me to use them which speeds up the process and enables me to easily get live data into my prototype from an API for example.