Budget Software that works with Excel and Cell Phones

I want a very simple to use budgeting software system that I can sell to customers on my website.? I want to be able to email the budget to them.? This budget should be able to be downloaded and used offline with excel on PCs, Macs, and cell phones. The budget should have adjustable categories, be usable for years to come, and have graphs.? Also, the budget should be able to print out by month, year, and graphs easily.