Shake To Lock and Unlock is a free Android app developed by AppzMakerz in the Utilities & Tools category. The app allows you to lock your device by shaking it, which reduces the usage of the power button. With Shake To Lock and Unlock, you can lock your screen without pressing any hardware buttons. The app is very easy to use and offers a dark mode feature. If you need any new functionality, the developers are just a click away to add your favorite feature.

To use Shake To Lock and Unlock, simply press the switch button on the top of the home screen to enable the service. Then allow all the mandatory permissions like Accessibility/Device Administration based on the Android version. Once you've allowed the permissions and enabled the service, just shake your device to lock the screen. Note that the app uses Accessibility Service to lock your device if the Android version is greater than Android P, and Device Administration permission to lock your device above Android KitKat.

Overall, Shake To Lock and Unlock is a simple and useful app that makes locking your device more convenient.