Looking to enhance the performance of your Android device? Try SmartHertz ROOT, a free app available on the Google Play Store under the Utilities & Tools category. Developed by Naprzod, it enables users to adjust their device's refresh rate based on the application they're using.

SmartHertz ROOT uses an Accessibility Service to identify the app you're actively using and automatically adjusts the refresh rate for an optimized experience. It's smart enough to recognize the type of app running and apply your preferences for similar apps. You can also manually set your preferred refresh rate for any app, reduce the refresh rate when your battery is low, and use a lower refresh rate for your ambient display - perfect for always-on screens!

Do note that while SmartHertz ROOT adjusts the screen refresh rate, some apps may be designed to operate at a fixed number of frames per second. The app works on most devices, but in case you encounter any issues, you can get in touch with the developer via email for assistance.

In short, if you're seeking a way to personalize your device's refresh rate and boost its performance, SmartHertz ROOT might just be the tool for you!