GraphNCalc83 User Reviews

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  • Great for a Stats class

    I downloaded this for my Math 103 class and it worked fantastic. Colors, capabilities, zooming in and out, just limitless in my opinion .

    Although it was hard having to use an archaic piece of plastic in my proctored exam. I am so surprised that graphing calculators have not changed at all since 1998 and they are still so expensive.

    I’m hoping soon the colleges will adopt policies that allow us to use this technology such as this app. You would think that if were being video taped in a proctored exam that we could use this program and not the junky piece of plastic they provide.
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  • Fantastic App!

    Thank you so much for this, I can imagine how useful this will be for me in the future for my college years! The reason why I bought this is so I am able to help my friends out much more effectively when I am not at home (meaning I don’t have access to a calculator to check). I absolutely love this also because of the button layout and everything is exactly like my TI-84 Plus CE so I am able to use this to its full potential. Please keep this fantastic app running, you (the developer Ernest Brock) are amazing to say the least.
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  • Thanks from a blind student

    Hello,

    I’ve been using this app for 4(?) or possibly even 5 years now. It’s the best app I’ve ever downloaded. I don’t think I would have been able to get through Calc BC without it because I couldn’t see a regular Ti-83 well enough. If I could give it more stars, I would. Most of the time, it’s far better than Desmos. Being legally blind, and having the capabilities to do complex math is a life changer. Only thing that sorta bugs me is the splash screen and app icon because if a teacher is peaking over my shoulder they may believe me to be goofing off (happened a few times) because my original iPad Air takes forever to load it (I’ve been looking at an iPad Pro for the bigger screen but they are way too expensive.

    Well anyway, thanks to the developer for literally changing my life. I appreciate it.
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  • Best thing ever made for the iPhone!

    I absolutely love this app! Ive had it for years and I still use it every day! I love all the new features! One complaint I do have about the newest update is that the older versions let you simply click your previous calculations and it would copy it right into the place where you are typing ! that saved me so much time especially when they are really long numbers. This new update isn’t letting me do it anymore ? Is there some way to turn it back on? If there is and you are reading this please let me know !
    But if not I hope they add that part back in the future update, besides that this is the app MY iPhone was invented for !
    It is amazing !
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    Developer Response

    Select the calculation you want to copy then touch the ENTER key. The new version lets you horizontally scroll any calculation or result that is wider than the display by swiping sideways with your finger which is why ENTER is now required to copy. As always, if you have additional suggestions or questions, you can directly contact me by touching the ? key twice, then touch the "Ask a question" button. I hope this helps. Ernie Brock Developer
  • 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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    Developer Response

    Fixed! As of version 1.6 the ends of discontinuous functions are accurately drawn. Your circle function now graphs smoothly at all zoom factors. It does way better than an actual TI graphing calculator! Update to the latest version and try it out- I think you will like it. If you have questions or comments, please feel free to contact the developer directly. Touch the ? key twice and then touch the "ask a question" or "report a bug" button.
  • EXCEPTIONAL!

    PERFECTLY DESIGNED AND IMPLEMENTED GRAPHING CALCULATOR!!! Best app ever, best graphing calculator ever -- bar NONE!!!! I cannot believe I have been hauling around my bulky "ti 84 plus c silver edition" (for 2 years) when I could have been using this app. i cannot believe I have taken five junior college math courses (int algebra, trig, precalc algebra, nature of math, finite math) and no one has told me about this app. I cannot believe I have suffered with not being able to easily see/know window mins/maxs and have labelled tick marks while looking at "graph." This app is what the physical ti graphing calculator SHOULD be doing, but cannot, because ti graphing calcs dont have a touchscreen like our smartphone!!!! With this app and the wolframalpha app, I can do anything. (Please make a CAS calculator, too!) I wish i could give the rating of INFINITE stars...
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