The most immediate difference is the speed. On modern hardware, this version of the app opens instantly. There is no splash screen lag, no "Updating Feed" spinner, and no pre-loading of high-resolution video ads you didn't ask for.
Because this version is designed for older hardware, it focuses on essential social networking functions: facebook 4.4.2
If you still want to try it:
While the speed is refreshing, using a legacy app in 2024/2025 reveals its cracks quickly. The most immediate difference is the speed