Credit Karma via iTunes App Store offers Credit Karma for iPhone and iPod touch for free. (Click here and register for an account for access to all features.) That's tied with last week's mention as the best deal we've seen for this credit monitoring app. It offers on-the-go credit monitoring, free credit score, notifications of certain events on your credit report, and more. Credit Karma provides registered users a variety of financial tools and calculators, comparisons, and more.