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Formulus Free - Formulas for Calculus

Formulus Free - Formulas for Calculus
  • #: 4575
  • Price: free ($0.00) In Apple Store
  • Category: Education
  • Updated: 2015-07-30
  • Current Version: 3.1.4
  • 3.1.4
  • Size: 20.00 MB
  • Language: English
  • Seller: Daniel Byon
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © 2010 Daniel Byon
  •  Add to Favorite apps



- Awarded "Best" award from www.iPhoneAppsPlus.com

Have you ever needed to know that one math formula that you always forget? Do you spend minutes flipping through your textbook or searching the internet for it? Then you need Formulus Free - Formulas for Calculus!

Formulus Free is the perfect study tool. It is a simple, easy to use, easy to navigate collection of the most important formulas and topics for high school and college students taking Calculus and Differential Equations.

Includes the following subject areas:


- Algebra & Geometry

- Derivatives

- Graphing

- Hyperbolics

- Integrals

- Limits & Continuity

- Matrices

- Series & Sequences

- Trigonometry

- Vectors

Differential Equations

- 1st Order Linear Equations

- 2nd Order Linear Equations

- Laplace Transforms

Support for Linear Algebra equations COMING SOON!!!

What's New in Version 3.1.4

- Bug fixes
- Fix for crash on Differential Equations -> Terminology

Formulus Free is now a Universal app! The current iPad-only version of Formulus will be removed from the App Store soon.

View iPhone screenshots | View iPad screenshots

iPhone Screenshots

Formulus Free - Formulas for Calculus iPhone Screenshot 1
Formulus Free - Formulas for Calculus iPhone Screenshot 2

iPad Screenshots

Formulus Free - Formulas for Calculus iPad Screenshot 1

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Rated 4/5 based on 3 customer reviews.


3/5 stars

Good calculus resource, could be better

I tutor calculus students for a living and this app is perfect for me - I know the material, I just can't remember all the formulas.

There is no interactivity. It's just a big PDF with a bunch of formulas and an occasional line of explanation. Beginners may frustrated in part because the organization is not great, but since it's free, you might as well have it.

The good news: there is a ton of stuff here, and it is all accurate as far as I can tell (exception: I can confirm an error in Simpson's rule that another reviewer pointed out). There is a sizable section on differential equations (including Laplace transforms), but not much on multivariable calculus.

Problem: there is a glitch with the headers. For example, when I was looking at derivatives, the header said "Algebra & Geometry."

The main complaint I have is that certain things have been overlooked. The derivative of an inverse function is missing. The section on complex numbers does not include Euler's formula. There's no mention of radius of convergence.

The list of power series expansions is too short - surely it should have cos(x), ln(x+1) and the binomial series. In the integration by parts section, why not include the tabular method? By and large, the list of integrals was shorter than I expected, but it does cover the basics.

It would be nice if this had a feature that allowed users to add their own notes (and corrections!).

But it's free, so you can't complain.

5/5 stars

The reason I passed Calc!!

Great app, study tool, and reference guide.

5/5 stars

Great app!!

This app is great for studying If you don't remember formulas or something basic but it'd be nice if it showed an example of the formula being put to use


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