The biggest challenge with creating meetings and appointments in Ical is coordinating your free time with the free time of whomever you want to meet with. Cogsworth syncs with your Apple Calendar in 15 minute increments, reading your busy slots and only displaying times based on your preferences and availability. Whether you set your availability on an ongoing basis (such as if you are running a service based business) or an adhoc basis, where you just want to quickly find a time that works.
One of the most frustrating things about meetings is when people run late, or worse, don't show up at all! With Cogsworth you can set email and text message reminders that can be configured to go out with your message people with whom you are meeting in your Apple calendar. Set reminders to go out weeks, days, hours or minutes before your meeting to ensure they turn up!