Game Controller for PS5 or PS4 positions itself as a practical solution for PlayStation owners seeking alternative control methods. The app creates a software-based controller interface that communicates directly with Sony consoles, functioning similarly to Sony's official Remote Play feature but with a dedicated control-focused approach. It fills a specific niche for gamers who occasionally need secondary controls or prefer the convenience of smartphone-based input. The core functionality centers on replicating DualShock 4 and DualSense controller layouts through customizable touchscreen interfaces. Key capabilities include configurable button placement, adjustable transparency settings, and support for both landscape and portrait orientations. The app maintains persistent connections to registered consoles and allows quick switching between multiple PlayStation systems. Performance depends heavily on network stability, with local Wi-Fi connections providing the most responsive experience. Real-world usage reveals several practical applications beyond emergency controller replacement. Parents can use their phones to assist children during difficult game sections without purchasing additional hardware. The app also serves travelers who want to access their home consoles remotely, though this requires proper network configuration. Some users report success with touch controls for turn-based games and RPGs where precision timing is less critical than in action titles. User feedback highlights both appreciation for the concept and technical limitations. Positive comments frequently mention the convenience of having an immediate backup controller available without extra cost. However, some reviews indicate connectivity issues with certain router configurations and occasional input lag during network congestion. The touchscreen interface receives mixed responses, with some users adapting quickly while others find it unsuitable for fast-paced gaming sessions. The absence of haptic feedback and physical buttons remains a consistent limitation noted across user experiences. As a Libraries & Demo category app, Game Controller for PS5 or PS4 delivers functional remote control capabilities with understandable compromises. The software provides genuine utility for specific scenarios where traditional controllers aren't available or practical. While the touchscreen interface cannot match physical controller precision, the app serves its purpose adequately for casual gaming needs and emergency situations. Network performance remains the determining factor for overall satisfaction, making this most reliable for local play rather than remote connections.