Having a great idea for an app or game is one thing, but scaling it to become a successful business is quite another. A new fintech startup called Sanlo aims to help. The company, which is today announcing an oversubscribed $3.5 million seed round, offers small to medium-sized game and app companies access to tools to manage their finances and capital to fuel their growth. To be clear, Sanlo is not an investor that’s taking an equity stake in the apps and games it finances. Instead, it’s offering businesses access…