What's cheaper

比较两种产品的重量和价格，它显示最便宜的产品

When you are in the store, you often have two of the same products that are comparable in quality. Both products usually do not have the same weight and not the same price. To determine the most advantageous product you need to do the math.

This app let you enter the weights and prices, and it shows the product that is the cheapest of the two.