Calculator ‪#‬ 4+

Scientific Calculator


Designed for iPad

    • 4.6 • 31.4K Ratings
    • Free
    • Offers In-App Purchases



◉ Over 11,000,000 Downloads Worldwide
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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 !

Terms of Service:

What’s New

Version 5.9.1

▸ ZOOM Key Function
▸ Stability Improvements
▸ Minor Bug Fixes.

Ratings and Reviews

4.6 out of 5
31.4K Ratings

31.4K Ratings

Snev H. ,

great for homework/online students

Because of schools closing due to COVID-19 it’s been hard to adjust to online learning especially because i don’t have all of the resources and supplies that i would have at school regularly. Especially in math because i don’t have the money to buy a nice calculator and the school doesn’t provide any. This really saved me because it had all of the tools needed to help solve and understand the stuff that we’re working on and learning at this time. I could just use a website on my computer buts it’s way easier and more convenient to have it on my phone rather than switching the tabs back and forth :)

pepewinswars ,

Advertisements are awful

This calculator would get a 5 star review from me if it didn’t have ads with sound that come up randomly. This makes this calculator useless if I am using it in a classroom, since I have no idea when these stupid and intrusive advertisements will interrupt my studying or the rest of the class. In fact, I was interrupted from my studies just now from an advertisement, and I decided enough is enough and wrote this review with the hope that the devs will remove the intrusive and interrupting advertisements. I’m fine with the banner ads, I understand they need to make money, but having these ads pop up in your face and making sounds interrupting classes or studying is just way out of line. If the devs remove the intrusive ads I will change this review and give 5 stars. Functionally, it works great, the display is awesome with a history of previous calculations to make multiple operations easy. It has all the functions of a scientific calculator that you would need. But

Zunitalks ,

Absolutely Excellent

Before retiring I was An intercontinental ballistic missile designer. Mathematical calculations were my daily bread and butter. This calculator can do, for free!, what our most expensive calculators could do. I am amazed that such a powerful calculator is now being offered at no cost to anyone who needs a small hand-held calculator. Thank you so much for making this calculator available. I highly recommend this calculator. (The only down-side to this calculator is that it does not use reverse-Polish notation which requires fewer key strokes. But no one uses reverse-Polish nowadays anyway, much less knows what it is.)

App Privacy

The developer, Incpt.Mobis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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