1. Overview Application: YouTube (for Android) Version Number: 5.9.0.13 Release Date: Approximately late October 2014 Platform: Android (primarily for smartphones and tablets) Status: Deprecated / Legacy

For archival or low-end device use, replace with YouTube Vanced (discontinued) or NewPipe (open-source, lightweight, background playback) if possible. For security, keep a modern Android OS and up-to-date YouTube client. Report compiled based on historical APK analysis, user documentation, and Android development archives.