Home Button Launcher is a free app developed by DynamicG, available on the Android platform. This app is a personalized home button app launcher that replaces the default "Open Google Assist" action if configured as an "Assist" app. It does not contain any ads, which is a plus point for users. The app offers various ways to launch the "Assist" action, including diagonal swipe from bottom left (on devices with gesture navigation), long-click on the home button (Android 6++), or home button swipe up (Android 4 and 5).

Overall, Home Button Launcher is a useful app that provides quick access to commonly used apps and features on Android devices. Its ability to replace the default "Open Google Assist" action and its ad-free feature make it a great choice for Android users who want to customize their home button launcher experience.