I'd be cool to have this as a python script somewhere but I am not quite sure wether I would visit this site whenever I need to calculate some physical units, especially since google already covers most of my needs
dont get me wrong, I think otherwise it looks and feels great and is easy to use but I dont know who will use this.
* The REPL: I wanted an interactive terminal-style calculator where I could press Arrow-Up and easily change a few things. It also lets me define my own variables and use them in my calculations. It saves the history so I can come back and press Ctrl-R to find a recent calculation.
* Combination of Web- and terminal version. I often work in the terminal instead of the browser where I can easily use the CLI version of insect.