Not that I use them anymore anyway, cancelling my old account, but name and shame any companies who conveniently can't support their free base. Also - it's VNC. It's a protocol. There's a dozen free clients out there.
Before it got enshittified with an update a few years ago, I used the RealVNC Android app to connect to a few of my own VNC servers. Wasn't interested in any of the fancy features, I just wanted a good VNC app.
Now I use AVNC. It's solid, performs better than RealVNC used to, and it's open source! You can get it on FDroid.