Simple Rule of Three is a useful calculator app developed by IGNMobile for Android users. The app is free to download and use without any annoying ads. Its main function is to calculate the simple rule of three with the parameters passed. It is a handy tool for anyone who needs to solve simple math problems quickly.

One of the great features of this app is the option to calculate inversely proportional. This makes it a versatile tool for solving a wide range of math problems. Additionally, the app comes with automatic language detection, which supports English and Portuguese. This makes it accessible to a wider audience.

Overall, Simple Rule of Three is a simple and effective calculator app that does its job well. Its clean interface and ad-free experience make it a great choice for anyone who needs a reliable tool for quick math calculations.