Stand is a simple clock app with simple UI and many customization features.
Heres what you can do
-Clock Modes
You can change between an analog clock and a digital clock.
-Color Customization
Customize text, background and hand colors.
Some colors support dark mode which can be seen in the settings view
-Font Customization
Change the font of the text from the settings view
Default, Rounded, Monospaced, and Serif.