Google has begun a public beta test of AdSense advertising embedded into mobile applications. The program currently supports contextual ads within Android and iPhone software, which can target users according to application, location, category or keyword. Apps must be free, however, and generate a minimum of 100,000 daily pageviews.

Developers must also be prepared to implement ads within four weeks, and remain in the beta test for three months. The conditions of the test may be geared to limit the number of participants, as few apps are capable of producing 100,000 pageviews in a day; prior to this week, Google had previously restricted mobile app testing to just 10 developers, such as Shazam and Urbanspoon. A finalized AdSense program should allow any advertiser to select mobile apps as a campaign option.