Two gadgets for your iPod from newbies Koloroo. The $4.99 TipKalc can work out how much you need to leave for that nice waiter who spat in your soup after you complained it was cold (my tip for that is a fat zero and a slap in the chops). It can also calculate how to split your bill, as long as there are not more than five of you at the table. Might as well use your cellphone calculator, IMHO - it is free, after all.
For $7.99, the KolorWheel (what is it with the overuse of the letter K here? Enough already.) gives you access to thousands of "scientifically formulated"* color schemes so that you can match your iPod to your pants**. Or you can tell Tarquin, your interior designer, EXACTLY what shade of Tuscan Aubergine you want for the pedestal mat in the bathroom.
*Eh? Perhaps I am being thick - I frequently am, you know...
**This is a lie.