Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download the free app Calculator # by Incpt.Mobis, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

Calculator #

By Incpt.Mobis

Open iTunes to buy and download apps.


◉ Pro Version: 5th ANNIVERSARY SALE 40% OFF !!!
◉ Very Limited Time Only !!!

◉ Over 2,000,000 Downloads Worldwide
◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,...
◉ Rated & Reviewed on

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

Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide 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, 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 KB ²
▸ 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 Only)
▸ Fraction and Degree/Angle Calculation
▸ Numeric Integral Calculation
▸ Dual Skins (Silver Light & Carbon+)

▸ Big Integer & Rational Number (Up to 30!)
▸ Expand and Factor Polynomials
▸ Basic Indefinite integral

▸ Quadratic Equations
▸ System of Linear Equations (2 Unknowns)

▸ Snap to Points
▸ Smooth Zoom & Transformation

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

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

We love your feedback, Thanks a lot !

What's New in Version 4.3

◉ Pro Version: 5th ANNIVERSARY SALE 40% OFF !!!
◉ Very Limited Time Only !!!

◉ 4.3:
▸ Stability Improvements
▸ Russian Language Fixes.
▸ Minor Bug Fixes.


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4
iPad Screenshot 5

Customer Reviews

The Best free Calculator !

One of the best free calculator for math class as far as I know. I dont need my heavy hardware calculator with me anymore. It supports a ton of features. One of the most useful one is equation solvers for algebra. Also, the tutorials section and videos are really handy, take a look if you cant handle somethings. On my conclusion, You cant expect more for free. Plus, you can do the upgrade for a lot more features for 5$ which is very cheap(It is sometime 3$ on promotion), . But it is fine for me. Thanks you guys for keeping this up !!!

The best

It was the best. I knew it was the best. I have friends and people, very important people, who told me it was the best. These people are the smartest people. Just amazing. I'm friends with the maker too. Just great friends. They told me this was the best and I told them it was the best. I have some really smart people who told me to use this. They are really great friends. This is great, just great.

Best Calculator Ever

I've been using the calculator for weeks now, and it's the best I've ever used (I'm a high school student in pre calculus). The only comparable calculator is an actual graphing calculator. But, this is conveniently on a phone, so you always have it, unlike the bulky, large TI-84. Overall, this is the best [free] calculator on the App Store, and I plan on upgrading to the full version.

Calculator #
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Utilities
  • Updated:
  • Version: 4.3
  • Size: 64.7 MB
  • Languages: English, Arabic, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions: