Formulus Free is a simple, yet powerful educational application designed for high school and college students who need a quick reference for math formulas. Developed by Daniel Byon, this app is available for iPhone users, and best of all, it's free!

The app is easy to navigate, and it provides a comprehensive collection of the most important formulas and topics for calculus. It includes a wide range of subjects such as Algebra & Geometry, Derivatives, Functions, Integrals, Limits, Logarithms, Matrices, Partial Derivatives, Series & Sequences, Trigonometry, and Vectors. With Formulus Free, you can easily access the formulas you need without wasting time flipping through textbooks or searching the internet.

The app is perfect for students who need to study on the go, and it's a great tool for those who want to have a quick reference guide to math formulas. Overall, Formulus Free is a must-have app for any student who wants to excel in math.