Very simple, user friendly application. I used it to completely clear out all of my photos (over 2K) from my iPhone, and was able to do it in just a few minutes. It did use a lot of battery and processing power though-- my phone gets really hot when using the app. But unlimited photo back ups? Thank you!!
I recommend this service to all my friends and family who range from tech savvy to tech illiterate...that's how easy and quick the app is. Though, I personally could live without those embarrassing #throwback photos from syncing my Facebook account. No one needs to see that.
Note: According to VentureBeat, Android, Windows, and Mac versions are still in development/beta stages.