All the functions you would expect in a scientific calculator are here, with the full advantage of floating-point numbers that have a full 14 digits of precision and exponents up to about 1e308. Come on, you’re dying to know what 170! is. Not to mention wanting a technically accurate calculator that doesn’t tell you the natural log of 0 is negative infinity. (That’s the limit, not the value, as any true geek knows.)

Need to convert gallons to liters? Grains to ounces? This calculator will do it, with conversions for length, area, volume, mass, temperature and speed.

It also does logic calculations, with support for base 2, 8, 10 and 16.

Visit the App Store to get your copy. Not that you probably need it, but just for completeness, you can also download a PDF manual that gives all of the techie details about the calculator.