I'm a big fan of the mobile version. But I'd love to see a couple things to improve the flow and quick keyboard use in the mobile version:

-- Can "Back to Menu" be selected by "*" or "#" on the keypad instead of having to scroll to the bottom to click on the text?

-- When a task is marked complete, can the browser be directed back to the list from which the task was selected? By staying on the task, the user has to scroll to the bottom of the screen (same as above) to select "Back to [list]" or "Back to Menu."