If you schedule things across multiple time zones, just buy this app. It will save you time and let you get a better nights sleep.
Ive tried many different clock apps on my iPhone. One of them showed me a nice chart of sunrise and sunset - helpful but I needed to squint to see the times and then compose an email to everybody to tell them what time we should have a call.
This app is direct and to the point. It shows you what you need to know, no more, no less.
The email feature is great. I will be using it this week, since Im expecting a conference call between Quebec, California, Norway and India. The math gets tedious. The fact that emails show the calendar date instead of Today is nice attention to detail.
If you think this app is too expensive : dont buy it. You dont need it. If you do need it, its worth every penny. If this app lets you get an extra hour of sleep by letting you schedule calls better, its worth more than a few dollars.