REGLA DE TRES SIMPLE COMPUESTA is an Android app developed by MAPFERRIL ACADÉMICO that aims to help students and professionals in solving complex mathematical problems related to the rule of three. It is available for free and falls under the category of Education & Reference.

The app comes with four calculators that provide quick solutions for both direct and inverse simple and compound rule of three problems. Additionally, it includes theory and solved examples to help users understand the concept better. The app has a simple and easy-to-use interface that makes it accessible to users of all ages.

However, the app lacks a few advanced features that could have made it more efficient. Also, the absence of an iOS version limits its reach to Android users only. Overall, REGLA DE TRES SIMPLE COMPUESTA is a handy and comprehensive calculator app that can be used by students and professionals alike for quick and accurate solutions to complex mathematical problems.