Q: How Does IMDB Follow Up a Hit App? A: With a Trivia App.

IMDB’s first mobile effort was a hit — the company says that 15 million Apple iOS users and 10 million Google Android users have downloaded the app since 2009. So here’s the next effort from Amazon’s movie database site: A trivia game. IMDB says 25 million users access the service from phones each month, either via apps or its mobile site.