WeatherThan is a free iPhone app developed by A Relatively Unique Inc. It falls under the category of Lifestyle, specifically in the subcategory of Weather. The main purpose of WeatherThan is to compare today's weather with yesterday's, providing users with information on whether it is hotter, colder, warmer, or cooler.

With WeatherThan, users can easily track the temperature changes and stay informed about the weather trends. The app offers a simple and intuitive interface, allowing users to quickly view the temperature comparison between the two days. Whether it's planning for outdoor activities or just wanting to know how the weather has changed, WeatherThan provides a convenient way to stay updated.

Overall, WeatherThan is a useful tool for anyone who wants to keep track of temperature changes and stay informed about the weather trends. Its straightforward approach and easy-to-use interface make it a handy companion for daily weather updates.