Uber Uber is perhaps the most well-known car service app. The app makes it easy to order a taxi, a black car or an SUV. Recently, the company unveiled UberChopper for that getaway to the Hamptons, but that will cost you a pretty penny. Users can see a map of available cars and request a car to come to them. The app predicts how many minutes it will take you and gives you a fare quote. Select a car and you're good to go. Uber recently disputed reports that it was raising financing at valuation of $1 billion. However, Uber previously raised $57 million in venture capital. Investors include Goldman Sachs, Amazon's Jeff Bezos, Universal Music Group and Lady Gaga's manager, Troy Carter. Traditional venture capital firms include First Round Capital and Menlo Ventures. The free app is compatible with iPhone, iPod touch, and iPad, and requires iOS 5.0 or later. It is also available for Google's ( GOOG) Android.