Wingnut Task Tracker’s Reliability as an Excel task Plugin

I am a very busy person with various meetings, business appointments, conferences, coffee-talks and the like. My office colleague recommended regarding Excel task plugin, such program is said to be very helpful in organizing daily work schedule, pertinent business reminders and report creations. I am interested to use this plug-in, however, I am doubtful of its reliability, in terms of accurately saving my reports and updating me with important reminders for my various business schedules. Can I really rely on this one? Furthermore, may I know the best feature or highlight feature of such type of Excel task plugin.
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