Atom Tickets has signed partnerships with Regal Entertainment and AMC Entertainment theater chains. The digital movie-ticketing startup’s launch, slated to roll out in June, will cover most of the country as a result of the agreement. Atom’s investors include Lions Gate, Disney and Twentieth Century Fox. The startup “uses a mobile app to help moviegoers organize groups to go to movies together,” explains The Wall Street Journal. “The company is betting that making it easier for friends and family to plan film outings on their phones will boost theater attendance and concession sales, particularly among young people.”