Simple Time Converter is a free Android application developed by Mori under the Business & Productivity category. This app is an easy-to-use world clock and time converter that is perfect for travelers and businessmen. With its widget, you can see the time of three selectable cities on your home screen. You can also convert time among the three time zones on the setup screen. The app works offline, so you can set your alarm even when you're on an airplane.

Setting up the app is easy. Once installed, you need to place the application on your home screen as a widget. You can do this by either opening the app drawer and tapping the "Widgets" tab or long-pressing on an empty area of your home screen and selecting the widget from the menu. Once you've added the widget, simply tap the "SAVE" button on the setup menu for the app, and it will appear on your screen and in use.

It's worth noting that the daylight saving time setting is based on the time you convert it, and any further changes may not be reflected in your alarm time. Additionally, the "Alarm ON" display only shows the settings within the app, and any changes on the clock setting will not be reflected.