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NoteCalc HD

NoteCalc HD

 

Description

NoteCalc HD is a new approach to the classic scientific calculator.

It shows your complete calculation formula just in the way you would write it on a notepad. NoteCalc allows you to alter any values or functions in your calculation at any time.

Accidentally entered a wrong value? Put a 'sin' where a 'cos' was supposed to be? With a classic calculator you have to start over again. With NoteCalc, just tap the value or function in your calculation formula and correct it. It's as simple as that.

In addition, each of your calculations can be given a name and saved for later usage. So if you have to do the same kind of calculation over and over again, NoteCalc will be a real time saver.

NoteCalc includes the following features:

- Displays the calculation formula and its result at the same time

- Change any entered values or functions at any time

- Solve a calculation by entering a target value for the result

- Recall the last result and insert it into your calculation

- 6 variables to store constants, results, or other values

- Save an unlimited number of your calculations for later usage

- Enter a comment for each value in order to reuse your saved calculation easily

- No need to put multiplication signs in expressions like 2(6π+1)

- Up to 20 levels of parentheses

- Accurate 15 digits

- 3 different button designs

- 2 font sizes for displaying your calculation (more font sizes soon)

For a detailed example of use please visit:

http://en.reinholdmeyer.com/page2/page11/page11.html

iPad Screenshots

NoteCalc HD iPad Screenshot 1

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Rated 4/5 based on 3 customer reviews.

 

4/5 stars

Pretty good

:
Ok, it's a little hard to learn how to use, but this math program packs a lot in. Several scientific computations are included (no erf or cosh, though). 15 digit accuracy. Clean equation interface.

The most surprising thing is that this thing can solve 1 variable, implicit, non-linear equations. I like what I see here, but I can only hope that this will one day solve many equations simultaneously or minimize/maximize variables.

Good work. Keep the features rolling.

4/5 stars

Great start-very powerful!

:
Real good calculator with many functions, plus it is easy to use. The ability to save calculations is very nice, as is the solve function. The use of variables is great ( A,B,C,X,Y,R).

However I would recommend a couple of upgrades. For the variables, it would be good to be able to assign them on the calculation page, like:
A=3
B=4
solve: A^2+B^2

Also, the spiral wire graphic at the top is distracting, and of no use, the 'page' scrolling is horizontal, but the spiral is on top, implying vertical 'page' flipping.

5/5 stars

After browsing thru 900+ calculator apps

:
...this is the only one I've found that really allows you to scribble notes and calculations as you would on a sheet of paper. And that is the whole point; a garden variety calculator will do instantaneous calculations; a more advanced calc app will let you email figures, but these assume that you have a piece of paper handy to write down your work or that you are going to open another app to record your brainstorm. It's the electronic equivalent of a "back of the envelope calculation" -- that moment when you want to do some rough calculations and add just enough info so you can look at your notes later and know what you were thinking about.

Of course, this app is also handy for basic calculations that you don't need to save. The real estate is well-thought out. The upper half displays your work, while the most frequently used keys are on the lower right hand side. The lower left hand side can be toggled to show blank space (less distracting), memory keys, or editing functions.

One improvement I would suggest would be the ability to insert parentheses into a formula during the editing process.

My one quibble about the real estate is that location of the "clear" button. By design, after you have entered one calculation, you cannot simply hit an enter key and move to new line of text because this would interfere with the ability to save each result. So after each calculation you either save it with optional notes, or you clear the screen. (Clearing the screen does not clear the memory; the last calculation on the display--either from current or saved work-- is automatically saved in "R".)

But the fact remains that the "clear" button is the most frequently used button in the app. Now the number/function keys can be used with forefinger or thumb while lightly gripping iPad with remaining fingers. To use the clear button, you have to take one hand off the iPad. This sounds minor, but can be very irritating, because you are doing it so frequently. Originally I thought it should be grouped with the keys on lower RHS, but first, the keys are well-chosen and secondly, you don't want to risk clearing a complicated formula before you could save it. My vote would be to place the clear button in the top right-hand corner of the screen, so you could use it without shifting the iPad to one hand.

But I must say again that I have not found an equivalent iPad app, and I have gotten so irritated at times with the clear button that I have looked. Time after time, I find myself returning to NoteCalc, because it was designed so well and seems to be a labor of love.

To conclude, despite my quibbles, NoteCalc really is the thinking man's (and woman's) calculator, and I highly recommend it.

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The information may be outdated (2011-04-30 15:57:13). For actual information go to iTunes

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