Its one of the most handy and usefull tool for making youtube videos.however it lacks dirctly uploading video from app.
Still it gives all channel information like subscribrs chart, comment notifications, most watched regions, age of persons who watcher and many more other usefull data.
For me I like the option to change youtube thumbnail , I always use this tool to change my youtube video thumbnails.
And one more thing it also keeps an account on how much you actually earned from youtube.overall it is a must have app for youtubers, a great app by google.