In bars and restaurants in the US, we order bottles of booze by the liter, serve their contents by the ounce, and charge by the dollar based on a target cost percentage. This makes for taxing math that we’d all rather not do. The Pour Cost app does that math for you, without the need to type anything in. You adjust the sliders to fit the product, cost, pour, and pour cost you desire — and Pour Cost does the work.