SimpleToDo - simplicity todo

SimpleToDo, a simple and efficient to-do list (Todo) and schedule management (GTD) app. At work and study, it can help you better formulate task lists and project plans; in daily life it can also be used to record memos and organize shopping lists. SimpleToDo integrates reminder items, schedule lists, memos, alarms, and collaboration tools into one, and is a capable assistant for your work, study, and daily life.
SimpleToDo, the productivity master tool
To-do list: dual-column layout, streamlined and efficient
Tag categorization: keep your work, study, and life in good order
Progress indicator: focus on your to-do progress, and achieve a sense of accomplishment with each completed item
Period view: view to-do items by period, with daily, weekly, and monthly goals
Persistent reminders: remind you every minute so important things are never forgotten
iCloud auto-sync: seamlessly sync your to-dos across iOS devices