By Ernest Brock

  • Category: Education
  • Release Date: 2014-05-18
  • Current Version: 2.4
  • Adult Rating: 4+
  • File Size: 12.53 MB
  • Developer: Ernest Brock
  • Compatibility: Requires iOS 11.0 or later.
Score: 4.5
From 471 Ratings


GraphNCalc83 uses touch, color and blazing speed to handle your math problems. The familiar calculator keyboard, arrow keys and functions are enhanced with full touch input for all graphs, editors and menus. Enter calculations in natural textbook format. Enter fractions and view result as fractions. 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 using 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 textbook 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. Output graphs in high resolution PDF format 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. 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.



  • The best graphing calculator you can get!!

    By JAKE32819
    It’s absolutely fantastic!
  • Just a Ti-83 but better

    By williamworldt
    Great educational information, love the trig identities built in. and I’m floored at how well lists work. Thanks Ernie for your hard work
  • Great app

    By Puma482
    Does all the things a normal TI-83/84 does. Looks and reacts like it too. But you also get the benefit of being able to pinch and zoom, etc on graphs. Fantastic app.
  • Perfection

    By Compensating
    I love this calculator! I was able to use it for my college math class. Came in really handy when I accidentally left my graphing calculator at home several times, and when I didn’t want to lug an extra expensive object around.
  • don't waste your time or money 🙄

    By ImCrazeh
    this app is useful once in awhile, but a lot of the times, when entering an equation, the graph part doesn't even show up correctly. if you want an actual USEFUL graphing calculator app, try using DESMOS. it's free and actually works! you're welcome, i just saved you some $$ and some 🕟
  • Please fix.

    By Whitegurlway
    I'm taking Interactive Statistics right now. I'm using Z-test and it's not coming out the same numbers as my professors. And when I seed a value and do randInt, it keeps coming out differently..
  • Excellent

    By Richard H C
    I have used this in front of students as I teach. I cannot be any happier. It is as good as Webb it on the android, only 100% legal!
  • Love to use in classroom

    By Volleygirl 718
    As a trig/pre-calc teacher I love this app! I use notability on my ipad to project notes (SO much better than writing on the whiteboard) and can easily go back and forth between this and notability to show them graphs, how to enter things into their TI calculators etc. My graphing calculator is very old (I taught years ago then took a break to be home with my kids and recently started teaching again) and this is so much better than carrying it or buying a new one that has color. Thank you for creating this!!
  • Amazing and solid app

    By eagle602
    Such a great tool to have all the power of a full blown graphing calculator on my iPhone and iPad.
  • Very poor design!

    By samanthahopbs
    The y-intercept will not graph correctly.