Some things that may have helped him not get into issues with Android - You can create AVDs (Android Virtual Device) that have different hardware capabilities

Some things that may have helped him not get into issues with Android - You can create AVDs (Android Virtual Device) that have different hardware capabilities (RAM, Camera, SDCard, Screen Sizes etc.) and run different versions of Android - 1.6 to 2.3 as of now. This makes testing your app very easy - you just set a minimum SDK version and if your app doesn't do weird things (uses features that don't work on a version of Android and declares support for that version)- most times it works very well. API Levels - API changes are mostly additive and old APIs are carried forward as-is. http://developer.android.com/guide/appendix/api-levels.html http://developer.android.com/guide/appendix/api-levels.html More than anything though - the developer can just push a beta in the Market and receive excellent feedback from users - user submitted stack traces, device info, feedback etc. can be very valuable in identifying and fixing compat issues.