Just came across something I'd been looking for months for......a calculator for my iPhone. Yes, I know there's a calculator already on the phone when you buy it, but this new one has something very unique about it (as far as I can see).
It's called Calc Pro Free, and as the name suggests, it's free. There are paid versions (€5.99) available for both the iPhone and the iPad, which add features like currency converter, finance, statistics and graphing functions. So check those versions out if that's what you're after.
For me, though, I just want a simple calculator and an option to do some relatively basic scientific computations. Exactly what the standard iPhone calculator can do, I hear you say. But......have you ever done trigonometry on the iPhone calculator? Sure, it has the Sine, Cosine, Tangent bits and bobs: but how do you enter the angles? Maybe you're comfortable with decimal angles, but for me (with a geo-surveying background), I like to use Degree Minute Second when entering angle values.
And you can't do that with the standard iPhone calculator. Or any of the dozen or so alternatives that I've downloaded, tried out, and deleted over the past year or so.
With Calc Pro Free you can easily enter angular values in the D M S format, there's a button specially for that. And as far I can tell from the other calculator apps I've tried, it's the only one available that can do that.
For that reason alone (and given that it can do everything else the standard one can do also) it has replaced the standard calculator app on my homescreen. The standard one now resides in a folder called "Rubbish", alongside Stocks, YouTube and Game Center.
image from "mobilephoneadvise.com"