LTG EXAM PLATFORM, a Boston, MA-based developer of mobile test prep apps, has raised $5.3 million in a Series A round led by Square Peg Capital. Other investors include Atlas Venture, Jamie McCourt, Edward and Mitch Roberts, and Margot Lebenberg Carter of Living Mountain Capital. According to the press release, the funding will help the company further build out its mobile apps, which cover exams like the SAT, GMAT and GRE, and add more senior management staff. The company also recently rolled out a college recommendation service. Founded in 2012, LTG Exam Platform’s apps have been downloaded by half a million students around the world.