MyUI 5 - Icon Pack is a free personalization app available for Android 9.0 users. This app is developed by tung91 and provides more than 3700 icons to enhance the look of your device. The app is compatible with various launchers, including APEX, ADW, Action Launcher Pro, ATOM, SMART Launcher, NOVA Launcher, HOLO Launcher, and LIGHTNING Launcher.

The app is developed by xda members who work on it during their free time. They promise to add more icons in the future and ask for the users' patience. The app's size is quite significant due to the large number of icons, and the developers apologize for any inconvenience caused by this.

Overall, MyUI 5 - Icon Pack is an excellent option for Android users who want to customize their device's look. The app is free and provides a wide range of icons, and its compatibility with various launchers makes it a versatile choice.