This well-designed client for Remember the Milk, the popular cloud-based task management service, presents to-do lists in large, legible text. Enter tasks in a bright blue box using RTM's Smart Add syntax or just type in the item and manually add tags, a due date, and a priority ranking, then view by tasks, lists, or tags.
WIRED Caches for offline viewing. Postpone tasks for later.
TIRED A live, daily task count would be handy. App authorization might take a few tries.