By Ernest Brock

  • Category: Education
  • Release Date: 2014-05-18
  • Current Version: 2.1
  • Adult Rating: 4+
  • File Size: 12.52 MB
  • Developer: Ernest Brock
  • Compatibility: Requires iOS 11.0 or later.
Score: 4.5
From 368 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.



  • Great Calculator

    By Magnolia0160
    Works just like my TI-84!!! Love it!!!
  • Awesome App

    By Szimitar
    This is a great app. Obviously it can’t be used in test situations but students will have their phone with them all the time other than that and won’t need to take the TI along. I’m a tutor and this is a great tool to use instead of buying the TI for $100+. Manipulating graphs by touch screen, highlights for important points on the graphs, not to mention the benefit of taking screen shots for making study helps. This would be worth it at twice the price.
  • Graphncalc83 beats TI-84CE

    By Teacher Abe
    Best $0.99 ever spent! Even better features than TI has. Especially the graph and intersect features. No longer need to ‘enter, enter, enter’ which is so anti-pedagogical and ludicrous. Graphncalc83 just lets you easily find the exact point of intersection with one step.
  • Great app

    By BeakerBrn
    This app just keeps getting better!
  • The only calculator app

    By Quwttja
    Thisbis, by far, the best calculator app I've used. It is is exactly like the old ti-83 calculator, which in my opinion is the best one ever made. But this adds in the power of the iPhone with a lot more bells and whistles to make it a modern calculator suitable for all levels from the middle school student to the corporate finance executive. Keep up the great work!
  • Really good

    By Friday's pro
    This is great cheap substitute for the real version.
  • Awesome

    By Dan The Electrical Engineer
    I use this app daily for all of my engineering responsibilities! Excellent app and well worth the modest cost.
  • Incredible!

    By mstrube67
    Use this app daily. So fast!
  • Super good app

    By Passitalongsomore
    You might not be allowed to use this app on a test, but it is as functional as any standard graphing calculator out there. The developer has done a good job implementing all the features and even enhancing the experience with the phone touchscreen. It is not buggy or slow, and the design is well thought out. For me it was worth the investment.
  • TI-8X calculator for $7

    By TVShowBuyer
    Not only does this do an excellent job of emulating the TI-84/83 calculator, but it fixes many of the short comings of said calculator. The periodic table app is worth the money by its self. The update just makes it even that much better than a physical TI-84