I’m sure this can all be done in Excel... except I don’t know how, and will sooner reach for Python when faced with a task like this.

Definitely will have a look when a Linux version is available.

Looks pretty neat! Any plans for Windows or Linux releases?

Thanks! Will definitely aim for Windows and Linux builds in the near future. The app itself is built in ES6 on Electron and has virtually no OS-specific dependencies, so I don't anticipate any difficulty. Also: If any enterprising hacker that uses Windows or Linux as their primary platform wants to volunteer to try building Tad on their platform, please get in touch -- I'd be delighted to have the help.

If you press CMD+SHIFT+4 then SPACE you can take a nicer screenshot. Looks kinda ugly as it is now.

Thanks for pointing this out! Was due to some unfortunate scaling happening because the image was just slightly bigger than the CSS for the page would accomodate; now fixed.

Just in time for extracting useful data from downloaded CSV files for tax returns!

You should add [MacOS] in the title.

Tough crowd! Code is not OS-dependent in any way; I just haven't tested or pre packaged binaries for these other platforms yet. Anyway, sources all on github; I would welcome your PR for other platform builds.

Oh, it's an Electron app. I thought that it's built with Swift.