I personally feel even 5 Star would be less for his talent and on time delivery of project.
One word for those who are going to hire him in future.
Just GO FOR HIM.
TRUST me you won't regret.
I hired him to add in-app purchase to my app for iOS and Android. He added in-app purchase for Android but not iOS. Not that he didn't try completely, he did write code for iOS but it was rejected by Apple and they told what needs to be fixed. But as I said Daman for some reason wouldn't do it, maybe because I already paid him or maybe because my budget is low, I don't know. So I only can rate 2.5 stars out of 5 because only half was done and I am still need to work on iOS half of the project.