Sciral Consistency
Application (iOS, Mac, PC) for tracking recurring tasks with flexible intervals (e.g. get a haircut every 4-5 weeks, call home every 3-5 days).
Tasks can be organized by tags and sorted in multiple ways: name, due date, priority, and your consistency in completing them. Color coding is used to highlight tasks too soon to do (blue), within the target range (green to start, yellow on the last day), and red (overdue). Completion of a task resets the target range.