By Ernest Brock
This app is only available on the App Store for iOS devices.
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.
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.
What's New in Version 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
•Fixed labels in triangle app
I have been looking for a truly powerful calculator for a long time. I've tried variations of the HP top of the line and several were very nice but as I said in one of the other reviews that calculator emulators are great for what they are but the idea is to serve your needs. If a calculator still retains all of the disadvantages of the original then it is not an advancement. This calculator not only provides all the capabilities of the HP that inspired it but also eliminates many of the physical calculator's cons. Ever had a calculator that did everything you needed and more but required a book and a lot of memory work to do any of the sophisticated things? This one does not have that drawback. There is context based help available at the touch of a button. Now you can actually use the full power of the calculator without it becoming a research project. To me, that essentially made the more advanced the calculator the less useful it became. Not so here. I applaud the developer. We don't need exact replicas of calculators, we need something to do a job with the least effort on our part. This is a giant step in that direction. Calculators are not sacred but my time is. Get this. You won't regret it. Now I can get on with my work!
Another great update!!! Thanks!
LOL- all you have to do to get help from the developer is touch the calculator ? key twice. Or just select the “App Support” button in the AppStore (next to the "Write a Review" button) and talk to the developer directly. This developer has amazing tech support and responds very rapidly. If you touch the ? key and then another key a help page with examples of how to use the key is displayed. All the menu functions have a circled i icon. When you touch the icon, a help page is displayed that demonstrates how to use the function.
You don’t need a TRACE button anymore- just go to the GRAPH screen and touch the graph you want to trace with your finger. The Zoom and Calc functions are conveniently located at the bottom of the graph view instead of the keyboard- great shortcut!
This is so much better than anything else on the app store- it has color, it has touch interface for everything, it has a periodic table to kill for and it is blazing fast for graphing FULL SCREEN on iPhone and iPad. And now the developer has added split screen and slide over multitasking for the iPad! All for a small fraction of the cost of a TI.
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.
- Category: Education
- Updated: Oct 10, 2016
- Version: 1.6
- Size: 14.2 MB
- Language: English
- Seller: Ernest Brock
- © Ernest Brock 2013,2014,2015,2016
Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.