(Inc.) — Turbotax Taxcaster: This well-designed Intuit app provides a rough estimate of your tax bill or rebate after you tap in details such as marital status, age, income, and deductions. The app, which is available for the iPhone, Android, and Windows Phone 7 platforms, also has a robust Help section. Cost: Free.
Capturengo: After you snap a photo of a receipt with your phone and hit Submit, Capturengo, available for iPhones and BlackBerrys, creates an IRS-approved digital receipt that you can access through an online account. You can organize receipts online and export data into Excel. Cost: Free for up to 50 receipts a month, then $99 a year.