This is an Electron app, that uses Materialize for styling, and a bit of jQuery for event handling. Its meant to do one and only one thing. Delete your Messages history from any Mac that you run it on.
If you are comfortable using the command line you can simply copy and paste the commands listed below and it will achieve the same results. In fact, if you downnload the app, that is all that it's doing, except with buttons and colors.
rm -Rf ~/Library/Messages/*
rm -Rf ~/Library/Containers/com.apple.ichat/Data/Library/Messages/Archive/*
osascript -e 'tell app "loginwindow" to «event aevtrrst»'Disclaimer: This project is not affiliated with or supported by Apple, Inc. All logos and trademarks are the property of their respective owners.