If you live in the UK you'll know about all the taxes and things like national insurance and stuff we have to pay when we get a job. It can get quite complicated working out what you earn and adjusting it constantly to keep up with current trends becomes tedious.
However with apps becoming ever so helpful, there is a neat app for iPhone and iPad which can calculate how much you take home annually, monthly, weekly, daily or hourly.
It includes the tax rate for 2011-2012 and 2012-2013. You can also include things like student loan repayments and how much you put in your pension.
It's a completely free app which is hugely useful.