What is the best platform/solution to develop an app for iOS, Android, and Blackberry? : <p>I will be making a database that is offline and online and wondered what I could use to develop apps for Apple's iOS, Android, and Blackberry all in one sweep.  I know Xamarin does iOS and Android, but not too sure how well it will be on Blackberry?  Are there any other solutions or ideas to nudge me in the right direction.  Thank you.</p>
