Appsperience, Chillantro's blog, reviews Due iPhone reminder app. Due is a paid app that costs $4.99. It is a super fast iPhone reminder which helps you to better organize your day. It allows you to add reminders = tasks, timers= tasks that strictly depend on time, and logbook = history of completed tasks. The app interface and design are very cool and nice. Most of the features go smooth and are very intuitive. Definitely it is an iPhone reminder app worth buying.