Zones is a free iPhone app developed by Squircle Apps LLP that simplifies the process of time zone conversion. With its easy-to-use interface, Zones takes care of any daylight savings conversions and provides accurate time information for each city, including sunrise and sunset times.

One of the standout features of Zones is its iCloud sync, which allows you to add cities on one device and have them show up on all your other devices. This makes it incredibly convenient for keeping track of multiple time zones across your Apple devices.

Zones also offers widgets that let you pin time for different cities on your Home Screen, making it even easier to access the time information you need.

In addition to time zone conversion, Zones provides detailed weather information for cities added to the app. You can select a specific date and time and view temperature, humidity, and UV Index data for the chosen cities.

Another useful feature of Zones is the ability to create custom reminders for different cities. This is great for setting reminders for important events or birthdays in different time zones.

Zones even offers a smart iMessage app that eliminates the need for complex time zone conversions in messages. Simply share the time with the iMessage app, and your friend will see the time displayed in their own time zone.

Overall, Zones is a user-friendly and feature-rich time zone conversion app that is completely free of advertisements, login flows, and tracking systems. With its accurate time information, weather support, and convenient features like iCloud sync and widgets, Zones is a must-have utility for anyone who needs to keep track of multiple time zones.