substratum lite theme engine is a personalization app developed by prjkt.io. The app is available for Android devices and is free to use. The app is designed to offer Substratum's most essential features in a light package. The app's primary feature is to provide theme system support for various Android versions, including Oreo, Pie, and 10.

The app is compatible with rooted and select Samsung devices. For unrooted and Samsung devices, the app requires Andromeda Server version 30+ or Synergy. The app also requires a custom ROM with Substratum Service included. The app offers a support chat on Telegram, with the hashtag #support.

The app provides an easy-to-use interface, and its features are well-documented. It offers a great way to customize an Android device's appearance without much effort. The app is an excellent choice for those looking for a lightweight theme engine.