Functionality completeness and coverage refer to the extent to which an application provides a comprehensive set of features that cater to user needs across different scenarios and use cases. For PGT, this aspect is particularly crucial as it positions itself as a versatile launcher utility aimed at enhancing gaming performance on Android devices. The app demonstrates remarkable functionality completeness by offering support for all major Android OS versions from 4.3 to 13+, ensuring broad compatibility. It covers essential graphics settings manipulations such as changing resolution, applying HDR and UHD graphics even on low-end devices, unlocking various FPS levels up to 90 FPS, customizing shadows, enabling anti-aliasing, and setting ultra audio quality. These features collectively ensure that users can fully customize their game graphics to achieve both visually appealing images and smooth gameplay. Additionally, the inclusion of unique features like Potato Graphics and Simple Shaders adds to its functional coverage, providing options for performance optimization tailored to device capabilities. This wide-ranging functionality empowers users to fine-tune their gaming experience according to personal preferences and hardware limitations, making PGT a valuable tool for gamers seeking to maximize their device's potential.

Usability and operational smoothness are critical factors that determine how easily and efficiently users can interact with an application to accomplish their goals. In the case of PGT, usability is enhanced through its intuitive design that allows users to customize basic, miscellaneous, advanced, and experimental graphics settings effortlessly. The app's interface likely presents these options in a clear and organized manner, facilitating easy navigation and adjustment of parameters such as resolution, HDR, FPS levels, shadow customization, anti-aliasing, and audio quality settings. Operational smoothness is further augmented by the app's ability to apply and back up graphics settings, enabled by storage permissions, ensuring that user preferences are preserved and can be restored when needed. Moreover, the permission to kill background apps for boosting memory contributes to maintaining optimal device performance during gaming sessions. By streamlining these processes, PGT minimizes the learning curve for new users while maximizing efficiency for experienced ones. The emphasis on providing help and FAQ sections for useful tips also underscores the app's commitment to ensuring a seamless user experience. Overall, PGT's focus on usability and operational smoothness translates into tangible benefits for gamers who can now spend less time configuring settings and more time enjoying enhanced gaming experiences on their Android devices.