

This isn’t a 3rd party tool, it’s a separate Steam Support page that lists your total purchases. It basically takes the data from the Purchase History section (assuming that you usually pay directly and not using Steam gift cards) and totals it so that you don’t have to do that manually.
I’m currently playing Research Story, that one is pretty cute. There are romances. I don’t know about combat since I haven’t gotten that far (just a few hours of play); it doesn’t really seem like there will be combat, but there could be.
I’d also recommend Apico, Mudborne, Littlewood, or Fields of Mistria. I’m sure I’m missing a ton. I think Steam has “Cute,” “Romance,” and “Slice of Life” tags if you wanted to browse those on the storefront.