Feedback and Reply
Q: How to prevent the user from fabricating the completeness of the challenge?
A: To prevent users from fabricating, we designed a verification mechanism. Users are required to upload the result of the completed task to finish the challenge. We will have a manual verification to check the result.
Q: What's the relationship between schedule and challenge and the relationship between schedule and to-do list?
A: The content of challenges strongly connect to the schedule, for example, the challenge could be: The user should complete the task the day before the deadline. Moreover, the to-do list is a summary of users' schedules. It's a different way of presenting the tasks set by users.
Q: What's the purpose to invite friends to complete a task together? The purpose is to work with the same task or the task only belongs to one of them?
A: The purpose of inviting friends to complete a task together has two reasons. First, if both of the users have the same task to do, by inviting friends to work together, they can supervise each other and reduce the possibility of procrastination. Second, if only you have this task, by inviting friends, your friends could supervise you to work to reduce the possibility of procrastination.
Q: Why is the "Challenge" place at the second position of the sidebar? Is this design according to some specific findings? As the main function of the APP, after adding schedules to the calendar, it's more instinctive to check the to-do list for users.
A: The reason we place "Challenge" at the second position of the sidebar is because "Challenge" is the main function to reduce the possibility of procrastination and the to-do list is only a different presenting way of users' schedule.
Modified and New Design

Task's Deadline
The original design needs to enter the deadline by the keyboard. We change it into selecting date and time.

Sidebar
Add personal information on the top.

Friends
Redesign the friend list. Change percentage to accumulated score.

Schedule Revision
Add schedule revision window and combine it with schedule completion.

Task Verification
Add a design to prevent users from fabricating the completion of their schedule and challenge. Users are required to upload the result of their finished task and will be verified manually by us.