SilverWiz today announces MileWiz 2.1, a major update to their popular automatic mileage tracker for iPhone. Designed for people driving their personal car for business purposes, MileWiz generates IRS-proof mileage logs, and helps claim tax deductions after qualifying miles. Traditionally people had to categorize each trip as business or personal. MileWiz 2 introduces automation that allows customers to predefine rules for automatic categorization making everything automatic. MileWiz 2.1 is completely free and can be downloaded from iTunes.