Add a button where you can type in a system of linear equations and you have to hit the down arrow to tyoe in a new equation to the system or set of equations.

x/y. i need fractons

Calculating the Percentage is not correct.... 10-10% should give 1

the history "highlighted" part should be more in contrast with background...chose something like gray

When selecting a number value in the converter view, the selection range is automatically extended to include the unit designator, which makes copy/pasting the value into the calculator view more difficult than it needs to be.

I suggest not auto-extending the selection, allowing the user to only select the numerical portion of the result.

i^2=-1 + 1.224646798818428e-16i the answer suppose to be -1
so why the extra term?

just make it bigger so it's easier to press

Unit names, like Angstrom, are long and are likely to be accompanied by a long number, especially if not using scientific notation, since the unit size is so small. Converting even a small number like 1 cm to Angstroms results in a large number that is truncated. League is another kind of long name. Not sure what the abbreviation is for that.

Like the GCF of 9t and 15m

I would like to use Numerics also on my Android phone. Are you planning Numerics app in Google Play ?

like where u can add up bills then save for a later date

enter in A, B, and C values and have the calculator substitute them into the equation

only square and no other root can be calculated

% button after all it is 2013 lol

Converting for Cooking; spoons to tablespoons, cups to Tbsp & tsp etc. Or if you wish to make your calculator more valuable, then add specific info like; convert cup of butter to weights of metric and or pounds. and same for all ingredients which available in many food calculators.

I would like there to be the ability to calculate polynomials.

Please add a tape function