World Clock + Widgets is an iPhone app developed by Micro Application that offers a comprehensive solution for tracking time across different time zones. With a clean and intuitive interface, the app is easy to navigate and allows users to choose from over 30,000 cities worldwide.

One of the app's standout features is the ability to use offline functionality, which is especially useful for travelers who don't always have access to the internet. Users can also add multiple widgets to their home screen for quick access to the time in different cities. Additionally, the time converter feature allows users to adjust the time in different time zones to their local time.

Overall, World Clock + Widgets is a great app for anyone who needs to keep track of time across different time zones. With its extensive database of cities, offline functionality, and easy-to-use interface, it's the perfect world clock app. However, users should be aware that the app offers a subscription service, which automatically renews unless turned off at least 24 hours before the end of the current period.