Why can’t I see comments or video details?
Due to quota limits in place by the YouTube Data API, the app must limit what is loaded. Eventually, these features will be added as better caching methods are in place.
Why can’t I control the quality in the video player?
YouTube doesn’t allow video playback without using the web player. Quality controls may come in the future but the player is still limited. It still adapts to your display.
Why is it $0.99?
Most YouTube clients are around $2 and they specialize in niche situations. For example, there are YouTube apps that give you Picture in Picture on iOS. Syndromi gives you features like Picture in Picture and a subscriptions feed in a beautiful design while being half the price. There are also no ads!