An error occurred while saving the commentAlejandro Figueroa Yi commented
This is an excellent idea. With the calendar integration feature, completed tasks should be kept within each day of its completion for tracking purposes. Also, open a completed task to review file attachments or notes that might have been included within each task for additional details or subtasks. Any.do currently offer in the Settings menu the Completed Task list that doesn't show completion date, and you are not able to open the task unless unmarked as uncompleted to review notes or attachments. This is feature benefits not just business-wise, but also personal in being able to too what you did and when did you do it.
Any.do Team; please consider this idea for a future update.