Green Background is a free lifestyle application developed by ALF Digital for Android 9.0. The app falls under the Hobbies subcategory, and it offers a simple and easy-to-use interface.

Upon opening the app, users are greeted by a green background with a few icons for navigation. The app allows users to customize their phone's background with various shades of green. The app also has a feature that allows users to preview how their customized background will look on their phone before setting it.

While the app does not have many features, it does what it promises. It is a straightforward app for those who want a green background on their phone. Overall, Green Background is a decent app for anyone looking to add a bit of personalization to their device.