Hi! No worries — this is a false positive.
The app does not contain any virus or harmful code.
Some antivirus engines incorrectly flag apps that:
include a built-in local server (NanoHTTPD)
load HTML/JS from assets
use WebView with storage
are unsigned / not from Google Play
These types of ports are very commonly flagged as Riskware even when they're 100% safe.
I’ll look into ways to reduce false detections in the next update, but you can safely install the APK — it does not contain malware of any kind. 👍
Thank you for letting me know!