Astrid, the popular cross-platform to-do list, has updated its free Android app to version 4.0. The new version updates the UI for all platforms and adds new themes. On tablet, you'll also be getting an optimized three-panel interface that shows your full menu, list of tasks, and individual task details all on one screen, as seen above. Besides the UI, the new app also adds support for subtasks and lets you outsource tasks with TaskRabbit. The initial release seems to have had a few bugs, but a quick patch (version 4.0.1) should have put everything in order.