I found this app “Quest: Level Up Your Life” as a new way that helps you organize your daily agenda or to-do list ( like Reminder on iPhone, but in a much more appealing way).
We often find normal To- Do lists boring and a waste of time. But this app takes the mechanic from video game as the motivation, instead of regular progress bar. This way is more interested and attached (or even addicted) to organize your to-do list.
from link to App Store