GraphNCalc83 at App Store analyse

App power index: 2820 (based on ranks around App Stores today)
Utilities Education
Developer: Ernest Brock
Price: 0 free
Current version: 1.6, last update: 11 months ago
First release : 18 May 2014
App size: 13.58 Mb
4.4 ( 4864 ratings )
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Estimation application downloads and cost

> 62.04k
Monthly downloads
~ $ 25.38k
Estimation App Cost


19 Nov 20 Nov 21 Nov 22 Nov
662 + 338 449 + 213 437 + 12 634 -197
GraphNCalc83 is a modern version of the classic graphing calculator. The familiar calculator keyboard, arrow keys and functions are enhanced with full touch input for all graphs, editors and menus. Trace graphs with your finger. Zoom in and out with a pinch. Explore regressions with a tap on the screen. Scroll through the list, matrix and calculation history with a swipe. Tap the ? key for help. Written in objective-C using LAPACK, BLAS, vDSP and the latest 64 bit math libraries, GraphNCalc83 harnesses the amazing computing resources of the iPhone and iPad to provide a colorful, fast and fluid experience. Graphs scroll, glide and zoom smoothly. Matrix, statistics and BASIC programs run 500x times faster than traditional calculators.

GraphNCalc83 includes:

Algebraic entry: Enter problems using full algebraic notation. The command line editor includes interactive parenthesis matching and high lighting, undo and redo, bubble function help and a 200 level calculation history and recall stack. Generate a PDF report of calculations for mailing or printing using the SEND function.

Math functions: Trigonometry, logarithms, function minimum, maximum, numeric integration and derivatives, general solver, real and imaginary numbers, combination, permutation, random number generation, normal, T, chi squared, Fisher, poisson and geometric distributions, binary shift and rotate, test and logic operations, list operations including sort, std. deviation, sum, sequence, matrix determinant, transpose, sum, ref, rref, addition, multiplication.

Graph functions, parametric and polar equations and statistics plots: Full color graphs with touch to trace, pinch zoom, function minimum, maximum, intersections, asymptotes and numeric integration. All graphs can be output as a high resolution PDF file for mailing or printing. Interactively explore function behavior using variables tied to slider bars.

Statistics, Inferential Statistics and Distributions: A set of inferential statistics worksheets and graphs of distributions are included. The regression analysis screen allows you to quickly compute, view and analyze a data set using a variety of curve fitting methods.

Table: Analyze functions using the table viewer. Use the split screen mode to simultaneously view a graph and table.

Matrix and Lists: Matrix and list editors and a full set of matrix and list operations are built in.

Unit Converter and Constants: Convert between a wide variety of scientific, engineering and common units. A large set of physical constants are also included.

BASIC programming: Create, edit, debug and run BASIC programs. An interactive debugging screen allows you to set break points, single step and view program variables. Programs run more than 500 times faster than traditional calculators. Import and execute .83p and .8xp files.

Chemistry: The calculator includes a full featured periodic table, a mass calculator and a data base of element properties. The touch interface allows you to view and interact with the periodic table to view by series, state, melting point, boiling point, electronegativity, electron affinity, valence, ionization, radius, hardness, modulus, density, conductivity, heat and year discovered.

Geometry: The geometry application computes perimeter and area for a variety of 2d geometric figures including squares, rectangles, parallelograms, triangles, polygons, circles, arcs and ellipses. A full triangle solver and interactive unit circle grapher are built in. Solve line intersections, project a point to a line and find a circle given 3 points.

Finance: Compute time value of money problems including annuities, lump sums and uneven cash flow analysis with IRR and NPV

Built-in user guide: A user guide is included and is a touch away using the ? key or ⓘ on any menu. All functions have a full manual page with description of arguments and examples of use. Pop up bubble help displays function arguments during problem entry and program editing.
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# Term Store county Place Priority
1 GraphNCalc83 USA 1 ⭐️⭐️⭐️⭐️
2 calculator infinity 6 ⭐️⭐️⭐️⭐️
Available in countries
Country Price
Canada 1.39 CAD
China 6 CNY
France 1.09 EUR
Germany 1.09 EUR
Italy 1.09 EUR
Netherlands 1.09 EUR
Portugal 1.09 EUR
Spain 1.09 EUR
Poland 7.99 EUR
UK 0.99 GBP
India 80 INR
Japan 120 JPY
Poland 4.99 PLN
Russia 75 RUB
Turkey 3.49 TRY
USA 0.99 USD
Korea, Republic Of 1.09 USD
Ukraine 0.99 USD
Available for devices
iPhone3GS, iPhone4, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,

Latest version GraphNCalc83: 1.6

•Added inequality function graphing
•Added dot mode for seq graphing
•Corrected auto entry
•Improved help screen formatting
•Keyboard sound preference is now saved
•regEqu generation for small coefficients improved
•Improved rref(
•Fixed labels in triangle app

Apps Changes History:
  • New App Version 6.99 -> 0
  • New App Version 0.99 -> 6.99
  • New App Version 6.99 -> 0.99
  • 1 year ago: New App Version 1.5 ☛ 1.6
  • New App Version 5.99 -> 6.99
  • 1 year ago: New App Version 1.4 ☛ 1.5
Simply WOW

Update May 13, 2016: This is officially the best app purchase Ive ever made. That class is finished and not once was this not enough; in fact, in every way possible it exceeded my expectations. Furthermore, based on my little critique below (which was false and just user error--my error), the app developer wrote me via my website and explained how to use the help/info options which explained everything. Thank you so much! I appreciate you making this available at such a reasonable price and saving students money. ________ Previous Review: Im taking a stats class right now and after the shock of textbooks costing $275 and needing to pay ___ for access to this and another ___ for access to that, I realized that I would need a graphing calculator, which would cost another $104+. This app not only saved me about $100 but thus far, I can figure out any differences between this interface and TI-84 and it has worked. Furthermore its on my iPad so everything is bigger and clearer than it would be had I bought a TI-84. Perfect. If I had to ding one thing about this app its that there doesnt seem to be a useful "help" or "how-to" guide, and given that its not actually identical to a TI graphing calculator, I fumble a lot until I figure it out. Would love some directions! Thank you for making this great app available.

7$ instead of over 100$ awesome

This is a great app for only 7$ since most ti calculators cost hundreds of dollars for anyone thinking this is expensive for an app and I dont want to waste my money dont worry this calculator functions just like any normal ti-83, 84 and up 100% recommend

Best ever

This is a perfect one to one to the ti-83. I use it for school and homework. Best 6$ Ive ever spent

Seriously a great app

This app is totally worth the $6 I paid, it does everything the physical calculator does and even more

Supper Great!

Really helpful

LOVE, LOVE, LOVE!

Enough Said!

Great price but a there is a flaw

I am giving this 5 stars because compared to purchasing a ti-84 it is fantastic. A ti-84 is around $120 while this is only $6. We have ti-84s at our school and I prefer those because of the buttons being easier to use and press but they can do much about that because this is a touch screen phone. The one flaw I have found while using this is while zooming in closely to a line on the graph sometimes the line will move or extend a bit while I am zooming in then it will change positions when the zooming stops. I was graphing circles and just messing around with the app when I noticed this. I put y1=-sqrt(64-x^2) and y2=sqrt(64-x^2) and I noticed as I zoomed in to where they should presumably meet along the X axis they were messing up for me. Otherwise amazing app and I believe they actually have more features than a brand new ti-84.

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