There are a lot of things you can do with an iPhone, and track your expenses is one of them, so one application you must have is shoeboxed. Minibooks can help you to keep track of the time you invest in your projects. Another tool you can't miss is Contractor, Freelancer, Small Business tax calculator (it will calculate your monthly rate).

Salesforce Mobile (to keep track of your customers), SurePayroll, Roambi Visualizer (to get access to important data in graphical form), and Top Business Summaries ( text and audio recapitulations) are things you must have if you're running a small business.

There must be other apps to help you with your daily chorus so make sure to visit this website.