With just a few more features, this would be perfect – Prioritask Review

Love the simplicity and usefulness of this app. Ultimately, it enables great to-do management without all the (counter-productive) GTD features that make you spend more time managing tasks than actually doing them, especially when you have no more than 50 or so tasks. However, there are a few things that would greatly improve this app to the point of perfection, IMHO. First, there should be an option to have "done" tasks automatically removed/deleted/etc. I hate having all my completed tasks remain in the list and require me to manually remove them. This is especially problematic when it is so simple to change a task from completed to not-completed: a single tap on the task. Please create an option to have all tasks -- maybe subtasks should be treated as-is, however? -- immediately removed from the view upon completion. Or, better yet, given that one could still easily accidentally make a task as complete as the app works now, have the completed task change color (gray text and tab?) and be automatically moved to a new "category" below "Low" that is simply "Done," that way one is unlikely to accidentally re-activate the task and they can be "cleaned-up" anytime at a later date. Second, the red/purple/blue colors are not typical for representing priority. I would go to red/orange/yellow or something more traditional.
Review by chriskobar on Prioritask.