Aereo comes to Detroit on October 28. Can it really hit 22 cities by the end of 2013?

Aereo is coming to Detroit and surrounding counties on October 28, the company announced Friday.

Detroit is the thirteenth city where Aereo has announced plans to launch this year. It’s already available in New York, BostonAtlantaChicago, Miami, Salt Lake City, Houston, and Dallas. A planned Chicago launch has been pushed back. Aereo recently said it will expand to Columbus, Cincinnati, Indianapolis and San Antonio, but hasn’t set launch dates yet.

The counties covered by the Detroit launch: Lapeer, Livingston, Macomb, Monroe, Oakland, Sanilac, Saint Clair, Washtenaw and Wayne.

Aereo lets users watch live TV on laptops and mobile devices and save shows to a personal DVR. It costs $8 per month to store 20 hours of programming and $12 per month to store 60 hours of programming. The service had been iOS (s AAPL) only but will launch on Android (s GOOG) on October 22.

So far, the expansion appears to be a bit slower than what Aereo had promised in January, when CEO Chet Kanojia said it would roll out to 22 cities this year. But there’s still time. The company has been besieged by lawsuits from TV networks who argue that its retransmission of their signals violates copyright. So far, it’s prevailed in several court decisions: Most recently, a judge in Boston refused to shut it down. The networks have also filed a petition with the Supreme Court.

This post was updated to note that Aereo missed its planned Chicago launch date and to list the Detroit counties where Aereo will launch.