Toronto application developer Polar Mobile Group Inc. launched a new “native advertising platform” that will allow publishers using the company’s applications a greater ability to use targeted ads in their newsfeeds, the company said. In a release Monday, Polar Mobile said its new MediaVoice product allows users to integrate sponsored stories, videos, photos and “outbound content” into their content on Polar Mobile-built applications. MediaVoice will also allow those publishers to access real-time analytics of the ads’ performance, and to target users based on their location or other identifying features, the company said. It also facilitates easy integration of content across publishers’ mobile and desktop websites, the release said. Polar...