Tubemate is an app presented by downupto. From where you can dowload the app and isntall to your phone then you can use it.the tubemate giving us to dowload youtube videos and many website videos like vimeo, dailymotion, facebook, metacafe, google, naver, daum, letv etc.you can preferene to your device storage & sd card storage.you can dowload videos max 4 simultaneous at a time.the speed will depend on your internet connection.i alaywes prefer to like tube mate.it will be better if it will avavible on google play store, ios, windows