Real-world feedback from users running Smart Tube on legacy Android 4.x devices is overwhelmingly positive. One user commented on GitHub:
SmartTube is a free and open‑source advanced media player for Android TVs and TV boxes. Initially a modified version of the official YouTube app, it has been completely rebuilt from the ground up, much like NewPipe, making it one of the few ad‑free YouTube clients that still supports full YouTube account login. The project is led by developer “yuliskov” and is hosted on GitHub, with an official website at smarttubeapp.github.io . smart tube apk android 4.4 2