It’s a beer recipe planning / brewday helper software.
Personally I’ve been using it for years and been really happy with it.
Yes, Linux support is a big deal for me too.
For any Archers out there, it’s available in AUR: https://aur.archlinux.org/packages/brewtarget
I got from Manjaro after I realised that I don’t need bleeding edge software and I was capable of destroying my installation several times, so Mint with Xfce it is.
Also software that I needed arch for I didn’t need anymore.
Me reading this comment as a brand new all-in full-time Manjaro Xfce user got me sweating, hoping I don’t break my install. I’m already working through my bluetooth drivers exploding when going into suspend state.
Manjaro isn’t a particularly stable distribution. They also have a habit of forgetting to update their encryption keys and other issues. Endeavour OS is probably a better choice.
https://theevilskeleton.gitlab.io/2021/12/05/why-you-shouldnt-recommend-manjaro-to-newcomers.html