Download and play background Youtube Audio
First of all, I apologize, since I could immagine that this thread could already exist in a similar form, but I need a short answer (whis is probably less searching effort)
A few days ago I switched to iOS from Windows Phone. On Windows Phone I had a super perfect youtube App: No ads, download videos (mp3 or mp4) and background play (=> turning off the screen, and SAVE data since only the audio track of the video was streamed).
Since I don't have many experience with the iOS apps at all and I don't want to test out 100 apps. Is there a "good" youtube alternative/downloader app and/or which can play audio in the background? (preferably with the option to stream only audio track to save mobile data).
It would be very important to me to being able do save the videos directly to the camera roll (->accessible from outside). If the downloaded video is only in the app itself, it's pretty useless for me
Thank you very much!