Good
Works really good with my DS220j. Not really obvious control, but it works. Just synchronized about 200Gb of photos and videos. It taken all about 10 hours and i had to keep display on, but it's a result of stupid ios policies - the only icloud can make backup in background with display off. Also i had to use the same account for my wife's phone to avoid too deep folders hierarchy (homes/NAME/photos/mobilebackup/NAME), it's impossible to choose the folder and keep creating of folders for each year/month.
