It's passable on my OG Droid. It was a weekend hack, and I need to revisit it with an eye towards speeding things up. Overuse of the Google Maps Javascript API is probably the source of a lot of the pokiness...
As an Android-user, web-apps which seems made to mimick the iPhone-look really turns me off (and I say that as a former iPhone-user).
Aesthetic nitpicking aside, it doesn't work very well on my Samsung Galaxy S (GT-I9000, international model) running CM7. The rendered page is wider than the actual screen and you are not allowed to scroll sideways to see what you are missing.
Once logged in, scrolling vertically causes a full page-update and then all of a sudden the screen-width has adapted. It definitely feels clunky and a bit ... slow, even on what should be a reasonably powerful phone.
Hopefully some of these are issues which can be fixed. Seems like a useful enough service otherwise.