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By Chirsoft

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Considered one of the TOP 50 IPAD APPS at
FxIntegrator is a mathematical tool that evaluates the area under a function curve for a given interval.

It's extremely handy for math students or engineers who need to calculate integrals using an iPad or iPhone.
Unlike other calculators, its elegant function editor makes it possible to write expressions in natural mathematical notation. It's a dream come true.

✔ Natural expression editor: write your functions just like they appear in math textbooks.
✔ Three integration methods to choose from: rectangle, trapezoidal, Simpson.
✔ Finite or infinite boundaries: compute improper integrals just as easily as proper integrals.
✔ Adaptive approximation: get results faster for most functions while maintaining accuracy for difficult functions.
✔ Built-in functions supported: acos, acosh, asin, asinh, atan, atanh, cos, cosh, ln, log, sign, sin, sinh, tan, tanh, square root, absolute value.
✔ Displays the computation time used.

fxIntegrator was officially recommended by Utrecht University:

fxIntegrator was considered an excellent teaching tool by the University of British Columbia:


What's New in Version 1.28

- added UNDO button in the iPhone version.


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1

Customer Reviews

Definite Integrals only….

I had hoped that this would have a CAS component, so that if I told it to integrate cosxdx it would reply sin x + C, but it will not do indefinite integrals. Hopefully the authors will include a CAS in later upgrades.

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This app is designed for both iPhone and iPad
  • $1.99
  • Category: Education
  • Updated: May 08, 2012
  • Version: 1.28
  • Size: 1.2 MB
  • Language: English

Compatibility: Requires iOS 3.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
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