1. aydjc's Avatar
    I'm the author of this app and it is one of the last 32 apps of Next App Star competition. Because I only know Chinese & English language and Facebook or Twitter can't be visited in China, I can't promote it in other countries.

    Although it is one of the Top5 paid apps in USA, China & Hong Kong SAR, almost no people download it in other countries, so I decided to make it free for at least one week in other countries' Marketplace.
    This is the best
    Graphing Calculator for Windows Phone and it is FREE now in almost all the countries (except USA, China & Hong Kong SAR)!

    You can find it from: Grapher Calculator | Windows Phone Apps+Games Store (United States).

    Users of USA, China or Hong Kong SAR can use the lite version or trial version of it.

    It supports:
    - includes a powerful and easy to use scientific calculator
    - cartesian, polar ,parametric & implicit functions plot
    - save functions image to picture
    - polynomial & linear system solver
    - save calculation history
    - radians and degrees angle modes
    - pinch to zoom and drag for scrolling the graph in real time
    - unlimited amout of equations added and plotted simultaneously
    - customizable graph colors
    - function tracing in cartesian
    - graph view supports both portrait and landscape
    - functions: sin, cos, tan, log10, ln, sinh, cosh, tanh, asin, acos, atan, asinh, acosh, atanh, √, 3√, rand, abs, sgn, fac, sfac, round, fpart, ceil, floor
    Laura Knotek and James8561 like this.
    04-27-2013 12:26 AM
  2. Laura Knotek's Avatar
    I bought your app last year, and it is excellent.
    04-27-2013 12:55 AM
  3. James8561's Avatar
    wow was eyeing this but since I didn't need it right away I delayed the purchase. great!
    just checked posted link. $1.49?
    04-27-2013 02:26 AM

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