The reviewer rates the Roby R2 4K Pro dash cam highly in terms of its functionality and ease of use. They appreciate the hardware and software upgrades, including the ability to run higher resolutions and frame rates, the inclusion of a super capacitor, and the improved Wi-Fi capabilities. The reviewer finds the dash cam to be reliable and worth the money. The only improvement they suggest is removing the need to sign up for a username and password in the app. Overall, the reviewer recommends the Roby R2 4K Pro dash cam.