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Developer: Jittapong Kumtara , Kunawut Pakdee
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Jittapong Kumtara


  1. Brian
    August 25, 2010 at 4:39 am

    First of all, very well done. Brilliant idea – this indeed is quite a revolutionary way of entering equations.

    A couple of things I would like to see, apart from more functions – especially inverse trigonometric functions (atan acos etc)…

    I feel switching to Pan Mode to move the view around is quite tedious and slows things down. When entering very large equations, it’s important to be able to move around quickly and easily.

    I suggest using 2 fingers to pan the look around, pinch to zoom in and out, and one finger to write. Then you won’t need the left and right buttons or the pan mode switch. The less buttons on the screen, the more space we have for writing and drawing.

    Very important : how do I undo the last stroke? I think shaking should undo – undoing the last stroke is a much more common thing to do than clearing the whole equation.

    Also, there has got to be an option to disable sound. In fact, I suggest just removing sound completely because places where calculators are used, sound is often not wanted. (Libraries…classrooms…labs)

    Another thing you might want to add is a history of previous functions.

    Finally, the app’s load time could be improved – you might want to make use of iOS4’s backgrounding so I don’t have to wait for it everytime I want to use it.

    This app you’ve made is incredible. I think it would be even more incredible on an iPad, where there’s more space to write. Right now, I still use another calculator app when I need to do serious work, but I look forward to your future updates. Please expand on this further – it hasn’t been done as effectively before, and it will certainly become very powerful if you can streamline the interface to make it faster to use.

    • BoMb_Za'
      December 6, 2011 at 1:42 pm

      Thank you very much for your suggestions that really help me.
      I will release new version of this app in few weeks. It will be a major change and also a lot of improvements.

  2. Bobby Jones
    January 1, 2011 at 6:02 pm

    I love this app. it is a great tool for kids and adults. I use it to help me teach.

    Question? How to enter a decimal. I need this.

    Request: Undo stroke, maybe a few levels. Clear is great unless you have a big calculation.
    Output to screen through blue tooth or hdmi. I could use this to help me teach young and old.
    How about a few scientific equations, Sin,Cos,Tan ASin, ACos and Atan (if they are in there, please excuse, if not, please include)
    Eraser tool that would allow erase of entries in long equations.

    Keep up the good work.

    • Bobby Jones
      January 1, 2011 at 6:12 pm

      Please ignore eraser tool. I found that I can scratch to erase or draw a circle around number or symbol to delete.

  3. Bobby Jones
    January 1, 2011 at 6:24 pm

    Finally watched movie and saw how to access scientific functions. Lots of hidden stuff in the program, this is fantastic. Recommend linking movie in help section adding a bit more help to some of the really fantastic tools.

    Did I mention I really like this program. Lots of fun, very useful.

    Thank you, I look forward to the future of this product.

    Idea for the future.

    What if I wrote an equation using variables and the user could enter numbers for variables without rewriting equation.

    A =
    B =

    Equation A + B =


    C = A = B

    User could enter multiple variables and use those in any equation. Contact me directly if you would like to discuss this idea in more detail.

    • BoMb_Za'
      January 3, 2011 at 11:49 am

      Thank you very much for your nice idea. The feature that you explain above is already in our plan.

      We are really glad that our application can help you : )

    • BoMb_Za'
      November 7, 2011 at 2:30 pm

      Sound interesting. We also have similar idea.
      It will be great to discuss with you : )

  4. January 2, 2011 at 5:27 pm

    Have you the Handwriting Calculator for Android (Samsung Galaxy)?
    Thanks for advance
    Bernard Clausen

    • BoMb_Za'
      November 7, 2011 at 2:27 pm

      Yes, we plan to port this application to Android platform.

  5. Mack
    July 11, 2011 at 3:04 am

    Could you add VGA support? This will help in classrooms in middle school and high school. Have you thought of adding functionality similar to smart board features and targeting teachers. Some schools are using iPad as an alternative in the classroom for the smart board. Teachers need more apps that are VGA supported.

  6. Alberto
    December 4, 2011 at 7:50 pm

    Hi! I have the handwriting calcolatore.
    Log(10)=1 ok!
    Ln(10) not egual 1

    Solve the bug, please!

  7. Tony
    December 5, 2011 at 2:57 am

    Does the app do integrals and derivatives?

  8. Jon DAnna
    December 28, 2011 at 5:02 am

    More support for advanced math (i.e. calculus, differential equations, etc.) I know this is difficult but if technology can advance in this way it would be amazing. This allows you to learn , practice, and solve math all in one easy fun step (kinda how i wish i would have always done math).

  9. January 7, 2012 at 2:40 pm

    Hi, love this app, still learning how to best create symbols, etc. Just installed on my iPad yesterday, today the info tab only shows black
    , is there some way to restore this feature?
    Scott (Scarrman)

  10. January 7, 2012 at 9:48 pm

    Update, the feature has returned, I would not be a bit surprised if I had done something incorrectly. Anyway, all the best to you guys!


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