We've released version 1.1 of Subby after we found a few issues on a couple phones. The wide variety of Android devices sure makes it challenging, but this version should work pretty well. Let us know if you run in to any other snags.
We are also enabling medium difficulty in the free game. Easy is a bit, well, too easy. Medium will give you a better feel for the game. We are also working on some music and an additional difficulty (really hard!) for an up coming release.
We are also looking at options for sharing the high score table in the not to distant future.
As always, your comments and feedback are welcome!