I don't think it's a matter of them choosing to not work with Blackberry users, it's a matter of trade offs between time and resources. As a startup, you may on

I don't think it's a matter of them choosing to not work with Blackberry users, it's a matter of trade offs between time and resources. As a startup, you may only have time to build one great app for one platform and iOS was the chosen one. To come to that decision, it was probably a factor of what you know and also some insight into the customer base. For example, maybe iOS users tend to be more likely to pay a premium for convenience or that in San Francisco, iOS penetration is higher than Android, etc etc. If the product picks up traction, I will bet that their next move is to port to Android, then web, then maybe ... maybe windows phone and blackberry.