The founders of Kobo, an eReader device company that rivaled Amazon's Kindle, have raised $4 million in seed funding for their next venture: Toronto-based mobile health startup League. The new startup is developing a digital health platform focused on preventative health. League's seed round was led by OMERS Ventures with participation from Foundation Capital, Real Ventures and Infinite Potential Group.

Kobo, the Leage founding team's previous company was acquired for $315 million in early 2012.

“Healthcare costs are massive and growing at an unsustainable rate. While nearly half of those costs are preventable, next to nothing is spent on prevention — this needs to change,” Michael Serbinis, CEO and Founder, League, said in a statement. “The future of health is preventative, and it’s about the consumer." 

League plans to launch its "data-rich mobile platform" early next year. The offering will help its members discover the best new health services, according to the company. In the future it will also help members create a "league of their own" or a team of health professionals they handpick to help them follow personalized care programs.

"League makes it easy to discover, schedule, and pay for services while staying conveniently connected," the company wrote. "The platform will store health information — including data from wearables and popular health applications – putting members in control of their information and giving them the ability to safely and securely share their data with their League."

League is currently recruiting health professionals and patients interested in participating in their beta.