And Tor Browser.

Although I would argue using tor plus a vpn is bit redundant unless you need serious privacy. As long as your proton VPN is always on and routes all of your traffic on your phone, you're generally okay. And you don't need to pile tor on top of it. Also it can cause serious latency, making a lot of apps unusable.

I use orbot for specfic apps. For instance mull allows split tunneling, meaning my apps that actually require the Tor network, I don't pass through the VPN first. Like robosats, and Samurai when I was using it.