

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






This looks great so far! I love the concept of an app that makes conversions easy for the most typical use cases.
It looks like you’re still early in the UI phase, so you probably have plans for this already, but I feel like the progress screen could use more feedback than only two progress bars.
Overall though, this looks like it could be solid! Good luck!