The smallest PythonNative app: a counter with navigation to a detail screen.

From this directory, install the example's dependencies (the preview imports your real app code), then launch it. This app declares emoji in [requirements].packages, so install it locally for the preview:

pip install emoji
pn preview

A desktop window opens running app/main.py's App. Edit any component under app/, save, and the window Fast Refreshes in place (no simulator or device needed). See the Desktop preview guide.

pn run ios
# or
pn run android

Add --hot-reload to push edits to the running app without a full rebuild.