Add another interest for Android app... recently made the switch from iPhone but looking forward to options on both platforms as my iPhone is still in use as a backup/ipod touch and I'll likely be using an iPad (or Android equivalent if a decent one emerges) before long as well.
Just a note to tablet users, in the meantime activeCollab works very well in the Android and iPad browser already. I use it often from my Asus Transformer with and without the keyboard.
Also we have just released an update to our productivity module Quickify that will make working from any touch device even better.... You just touch and slide on any ticket or task link to get access to the Quickify view from the Dashboard... To quickly reply, add tasks, view the last comment, etc for an existing item showing up in your dashboard activity or Tabinator tabs.