Pretty impressive for a pricey app. Of course, that's chump change when you consider exactly what MLB is dealing with -- the app integrates the Gameday Audio service, which sells for $14.99 on its own, and baseball's television and video content makes much, much more than a million dollars. The iPhone revenue, big as it is, is just a drop in the bucket for MLB, really.
But nevertheless, the MLB app stands out as proof that, even if you have to include exclusive live audio content from major sporting events around the country, it is possible to make an app that people will happily pay $9.99 for. Stands to reason that if developers can make their app at least as functional and useful as At Bat, they too can make a million dollars.