UI Theme

Since iOS 13, users can choose to adopt a dark system-wide appearance called Dark Mode.

In Textastic, you can set separate themes and keyboard appearances for light appearance and dark appearance.

Appearance

System: Automatically switches to light or dark appearance according to system settings.
Light: Always use the light appearance.
Dark: Always use the dark appearance.

The default light UI theme is Blue. You can also switch to the Gray UI theme.

The default dark UI theme is Blue. You can also switch to the Yellow or Gray UI theme.