The web preview shows the engine — but the new v6.1 native features are build-time flags that only come alive inside a real installed app. Download the demo APK to try them.
Heads up: because this APK is downloaded outside the Play Store, Android will ask you to allow “Install from unknown sources” for your browser the first time. Tap Settings → Allow from this source, then re-open the downloaded file to install.
Close and re-open the app — it asks for your fingerprint, face or device PIN before the site loads.
A native Material tab bar at the bottom jumps between sections of the site — no web menu required.
Flip your phone between light and dark in system settings — the app follows it instantly.