Vdopia, a profitable iPhone advertising platform, has raised $4 million in Series A funding from Nexus Venture Partners. The Palo Alto, Calif.-based company, which only launched in the U.S. in March, claims it’s seeing 4 percent click-through rates for its pre-roll videos before applications start — an impressive number that Vdopia says does not include accidental clicks, as so many ad stats do.

The iPhone makes an an ideal advertising environment because it eliminates the clutter of a web page, said Vdopia founder Srikanth Kakani during a phone interview Tuesday. Vdopia claims it now reaches more than 10 million U.S. iPhone users through apps like iBaseball and Arcade Hoops, with advertisers including Coke Zero, Warner Bros. and the National Guard.

Alongside the funding, Vdopia has brought on tech entrepreneur and investor Rohit Sharma as its president and CEO. Sharma was previously an investor at Mohr Davidow Ventures and CTO of ONI Systems. Next up for Vdopia is the Android platform. The company also maintains a web-based video ad business in India, where