I am quite impressed by the tool so far.
The generated code is very clean. The UI builder is well designed. Two suggestions:
1 - more languages and supported frameworks:
On the web I use SvelteKit which is getting more and more traction.
On mobile there is Flutter.
I know it would be a lot of work than only supporting React and its variants (Preact, Vue...).

2 - More templates:
I would like to have a lot more templates, better diversity and better template organization by category.
Some ideas for templates: quizz, forms, mobile apps, dashboards, crud backends, metrics/charts (would be great to have some prebuilt charting components)

It is already a great tool. Please keep up your incredible work !