From Homegrown Software Ltd:
YouPlayer is an unofficial YouTube app designed exclusively for iOS. YouPlayer is a native app that feels right at home on your iPad, iPhone or iPod touch. Easily browse videos wherever you are, and play in whatever quality you choose. The exclusive Kids Space feature (premium only) allows you to lock YouPlayer to showing only a set of videos, channels & playlists that you choose. Play any videos available for embedding (including most music videos). Universal app with full support for the newest iOS devices. Sign in and access your favorites, subscriptions, playlists, liked videos and more. Browse most popular videos, or search for what you want. View and post comments. Share videos, channels and playlists. Watch channels streaming live. Full VoiceOver accessibility support. Kids Space (Premium only) - Exclusive to YouPlayer, Kids Space allows you to setup custom spaces with only videos, channels & playlists you choose and then lock YouPlayer to displaying only those until you enter a passcode to unlock. You can even have custom color schemes for each space.
What's new in this version:
NEW: 3D Touch ShortcutsCHANGED:Removed background audio playback and changed icon at Google's request. Bug fixes