Ratio Calculator for Factorio is a free Android app developed by Ogg Technologies. This app is a utility tool designed for Factorio players who want to calculate how many items and machines they need to produce a certain quantity of an item. The app creates a list of dropdown menus to help users figure out how many items and machines they need at each step of the factory.

The interface of the app is simple and user-friendly. Users can select the desired item from the dropdown menu and enter the quantity they want to produce. The app will then calculate the number of machines and items required to produce the desired quantity of the item. The app is easy to use and it can save a lot of time for players who are trying to optimize their factories.

It is worth noting that some images used in this app are from the game Factorio and belong to Wube Software. Overall, Ratio Calculator for Factorio is a useful tool for Factorio players who want to optimize their factories and save time.