I absolutely loved this little clock until… I updated to LION OS X today. After the update, which this little Mach Clock apparently is not compatible with, the times are all wrong, and one can no longer change the time zone. So then, it has lost functionality due to the update to LION. I hope the producer corrects this compatibility issue.

Nice looking. Easy to set up the five possible clocks. But: missing the option between 12 and 24 hours, missing many cities in America and around the world. Also I personnaly need more that five clocks. I hope that some futur upgrades will increase options. In comparison with some other world clocks app for the same price but offering more, this one is too expensive.

This app works extremely well, even though you can't resize anything. But the main drawback is the amount of CPU it utilizes. If you install it on a laptop, watch your battery go quickly, along with the CPU. I ran the Activity Monitor and was floored by the amount of data it uses while just sitting there running. It's only a clock, and it should not use that much of the CPU. Fix that and it'll be great. In the meantime, only 2 stars, and that's being very generous.

Pros: Gives you both analog and digital clocks.Cons: Doesn't search for cities, you have to scroll through the list of time zones. Can't change the number of clocks, it's fixed at 5.Can't select analog/digital for individual clocks.