Making apps with Godot is actually very doable, it takes care of a lot of the typical annoyances involved with that process like UI layout, theme support, and cross platform distribution. The Godot language (GDScript) is very approachable and powerful, too.
The Godot editor itself is made with Godot, and here's a few other nice examples of apps that I know of:
GodSVG

Wonderdraft (paid app)

Pixelorama
