While Garmin is no stranger to mobile navigation apps, it has continued charging $30 or more for its StreetPilot software even after breaking out some components as in-app purchases. That's a hard bargain in an era when phones offer GPS tricks like lane assistance for free. Clearly, the company is aware of this discrepancy -- it just unveiled Viago, an app for Android and iPhones that tries to bridge the pricing gap. Fork over $2 ($1 until July 13th) and you'll get worldwide maps alongside lane assistance, realistic junction views, speed limits, weather and traffic. You only pay more for the features you want, and some of them are unique -- Real Directions gives you directions based on landmarks rather than street names, while Active Lane Guidance simplifies taking that next off-ramp.