◉ Top Paid Educational Apps in US, UK, AUS, GER,...
◉ Rated 9/10
◉ Users Reviewed: "Top Class Calculator !"

The BEST Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,...

Calculator Infinity (∞) – The sleek, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy all ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, programmers, engineers, and math students. Calculator ∞ makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes!

◉ Official Website:

▸ Universal Calculator App
▸ Support All the Latest Devices ¹
▸ Support Multitasking (iPad)
▸ Support Wireless KB²
▸ Mathematical Display
▸ Edit & Export Expression/Result
▸ History Tape View
▸ Basic Calculations (+, -, x, ÷, %, Abs,...)
▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…)
▸ 14 Memory Variables (Including X,Y,Z,M)
▸ Assignment Operator
▸ F(x) Customize Functions (F1, F2, F3)
▸ Unit Converter (21 Categories, 400+ Units)
▸ Over 40 Common Constants
▸ Fraction and Degree/Angle Calculation
▸ Numeric Integral & Derivative Calculation
▸ Dual Skins (Silver Light & Carbon+)
▸ No Ads

▸ Big Integer & Rational Number (Up to 500!)
▸ Expand and Factor Polynomials
▸ Indefinite integral & Derivative
▸ Two-side Limit
▸ Taylor Series Expansion
▸ Hints and Solutions

▸ Simultaneous Graph
▸ Smooth Zoom & Transformation
▸ Conic Equations (Parabola, Hyperbola, Ellipse)
▸ Get Intersections, Min, Max & Special Points

▸ Advanced Two-side Limit
▸ Advanced Indefinite Integral
▸ General Equations (Accurate Roots)

▸ General Equations (Numerical Roots)
▸ Quadratic & Cubic Equations
▸ System of Linear Equations (2 & 3 Unknowns)

▸ Modify & Sort Data
▸ Single Variable Statistics
▸ Linear, Quadratic, Power Regression
▸ Logarithmic & Exponential Regression

▸ Polar & Rectangular Notation
▸ Argument, Conjugate Function
▸ Trigonometry Functions
▸ Logarithmic & Exponential Functions

▸ Support Up to 7x7 Matrix
▸ Support Complex Numbers
▸ Cross, Dot Product
▸ Det, Inverse, Transpose
▸ Cramer’s Rule Solver
▸ Numerical Real Eigenvalues

▸ 15 Different Bases
▸ Support Up to 64 Bits Integer
▸ Binary Operation (NOT, OR, XOR, 2’S, …)

▸ English, Spanish, German,
▸ French, Japanese, Chinese

¹: Include iPhone 6/6S+ HD Retina Display
²: Standard English KB

Calculator ∞ is not only the Calculator

We love your feedback, Thanks a lot !
Please contact us for questions, bugs/crash reports, conversion requirements, etc....

What's New

Version 5.0

▸ Stability Improvements
▸ Minor Bug Fixes.

Ratings and Reviews

4.8 out of 5
770 Ratings
770 Ratings
Clurichaun ,

Easiest To Use, Beyond Full Featured

This calculator is probably much more than what most would use it for but it does have an immense amount of features. As for being the best, if are not that concerned with "the fancy looks" I would say calculator infinity does it all and makes everything really easy to understand. For someone that has to perform higher level functions I would recommend Calculator Infinity at home or st a job. They have a PDF on their website for it and if you get the bundle I think it was super cheap and get a unit converter along with it and it also has a PDF. These are just options because I do use and like 42 but not for everything. If are in school this will be a problem unless you have a really cool professor that will allow you to have your phone open in class, especially during a test. You basically build visible calculations into this, like on paper and it solves the problem but ultimately, it is cool and fast at home but most professors would never allow you to use a phone during a test, so if are trying to skirt around learning how to solve problems without resorting to a scientific calculator, this probably won’t be of much help in a college or high school class.

The emusifyer ,

Great calculator

I use this calculator for many advanced and all of my variable based calculations for one reason - this calculator allows you to input the equation in its original form. For students, that means they can input their equations in textbook format father than a long string of numbers and variables with excess parentheses so the program can sort it out.
A couple things I would like to see. Needs and updated manual. Also, still can’t find the infinity button needed for some calculations. Also, would like the ability to tell it which variable to solve for. Right now it automatically solves for x but there are times i have multiple variables and need specific ones.
Also, I would like to complement this developer for always upgrading the existing app instead of trying to get people to repurchase a newer version as other app developers have been trying. I feel confident this developer won’t let his existing customers down and that says a lot these days.

lsume82 ,


I use this calculator almost every day if not every day. As a retired mechanical engineer, I spend most of my days doing research on about everything that pops into my head. The calculator uses numerical methods for calculating single integrals but does do numerical trigonometric solutions. The calculator also has plenty of memory slots. The shift key opens up other nice functions. It doesn’t allow for easy copying and pasting of results or equations that led to those results. Obviously, for people who really know how to do serious programming, Excel is almost infinitely better for calculating anything with the bonus of being able to print just about anything you like. I’ve written single cells with about 7 nested if statements using Excel. For a carry around calculator that isn’t programmable, this one is great and well worth the $4.99 or whatever it costs close to the aforementioned amount.


An Truong
94.4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish
Age Rating
Rated 4+
© 2018 Inception Mobile


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