<p><i>Cirno</i> is an app freezer that runs on Android 12+ platforms, it is used to make background apps completely free of CPU resources to improve the overall smoothness of the device.</p><p><i>Cirno</i> is currently only supported on cgroup v2 devices, which means your Linux kernel version needs to be greater than or equal to 5.0.</p><p>The app has no GUI. It will freeze apps automatically. By modifying the cfg file, you can specify that the application does not freeze.</p>