A: Yes. It is free on the Apple App Store and Google Play Store. No subscription is required to pair it with the V461.
A: Extremely unlikely. Beware of "free Ucast V461" giveaways on social media—they are almost always scams. Ucast occasionally runs contests for accessories (bags, cables), but not the $600 encoder. ucast+v461+free
Disclaimer: Prices, firmware features, and cloud service costs mentioned are based on market research at the time of writing. Always check the official Ucast website for the latest updates. A: Yes