I know you can use the simulator to test, but I prefer to test directly on the device and when you need to wait ~1 minute per build it is a bit annoying. I used Corona SDK for a small 2D game two years ago, maybe now the build times is better ...

Reposting what seany wrote 4 hours ago [dead]:

You can also use the "viewer" tool to sync your project with a application shell on the device via dropbox.

You can also use the "viewer" tool to sync your project with a application shell on the device via dropbox.