We still have some work to do to best support the different hardware (better landscape views mostly). Other than that, it was pretty easy to create new assets for the different screen sizes...

What was more difficult was dealing with lower memory devices (like the G1). The app is best when used on a high end device (duh!) but at least it shouldn't crash on the lower end devices. This was not the case until we started getting reports from people with older phones. At some point they'd run out of memory and the app would die or behave very unexpectedly.

We spent a lot of time on memory optimization.

True for bug testing. It was great to get all the USER testing though. We made some major changes based on user feedback during the beta period.

As I say in the original post (http://blog.tweetdeck.com/android-ecosystem), it's great that our app can run on so many different devices. It has been a bit more work supporting all the custom ROMs and hardware specs, but there are more difficult platforms to develop for.

One REALLY nice thing about developing for Android was that we could have a beta period that involved 36k users. Being able to distribute the APK outside the Market was a real blessing. It's much harder to test iPhone software before submitting it to Apple.