Menlo Park, Calif.—Facebook Inc. is introducing a new ad unit that allows advertisers to promote their mobile apps. It will be priced on a cost-per-click basis.
The ad units will show up along other suggested apps based on users' own Internet activity, but will be labeled as “sponsored.” Clicks will take iPhone users directly to Apple Inc.'s App Store and users of Android-powered phones to Google Play.
The company said it is testing the ad unit with a limited set of beta partners but is also inviting
other companies to take part. Facebook said it had 543 million active mobile users as of the end of June.