A free app for Android, by lingen.me.

The Retro Clock Widget is one of the most popular clock widgets for Android phones and tablets. It is based on a classical mechanical clock and provides the user with a quick way to check the current time and date. This widget is great for those who want to customize the look and feel of their phone or tablet. The app also allows you to set up shortcuts to the most common alarm and calendar applications.

To customize the look and feel, you can change the colors, transparency, and even the shortcut to your favorite application. You can also set it up to appear on the home screen, lock screen, and notification screen.