There has to be something exemplary about a “Pro” device, especially to justify the $170 price compared to the $100 you pay for the Backbone One. If you judge it merely by its on-paper feature set, there’s not so much that stands out.

A controller that wants to be wherever you're gaming? The Backbone Pro sets out on that path and covers a fair bit of ground -- for a nontrivial $170 price tag (thank you, tariffs).I tested the iPhone version of the app;

Backbone's Pro Controller adds a pair of remappable back buttons, upgraded analog sticks, Bluetooth, and a bunch of customization features.