Hey, I'm the developer of Globaclock, a universal iOS app. Globaclock allows users to find the time of multiple cities all on one clock. So instead of having to sort through a long list of cities, with Globaclock, you can take on quick glance and know what time it is in another city. Globaclock also has Timezone Aware Alarms. These alarms allow you to choose a time and a city. So if you want to be alerted when it's 10 PM in Tokyo or any other city, you can.
For more information and screenshots visit http://www.globaclock.com
To download this app go here: http://itunes.apple.com/us/app/globaclock/id452568408?mt=8#
I hope you like this app. If you have any questions or feedback, post here and I'll try to get back to you as soon as possible.