Always Visible Home Button is a free Android utility app developed by OK soft. It allows you to move the home button, back button, and recent apps button to your desired location. The app also has a feature where you can press and hold the button to use various functions, such as adjusting the volume. Additionally, the left button on the notification bar is a function to turn the on-screen button on or off.

However, it is important to note that the app requires Accessibility Service permission. This means that it collects screen touch data, which is used to view recent apps, navigate to the home screen, or use back gesture events. The app requires your consent to access this data, and it is only used for the aforementioned purposes.

Overall, Always Visible Home Button is a useful app for those who want to customize their Android device's navigation buttons. However, users should be aware of the app's Accessibility Service permission and understand why it is required before granting access.