How the hell are you guys even finding the posts about your own software on off-topic forums like this one? First ViewDNS, and now you...
It's quite a difficult thing to code for iOS, given that you need to pay to be able to be found on the store.. seems cruel. And then the users mostly need to pay for the apps, because if not, they often pay with their data. Maybe that's all what was needed for Mr. zhang888 to judge your app. A price tag does of course not mean you won't additionally pay with your data. But as I said, it looks promising.
It's your decision in which direction you want your app to go. I'm sure some users would find it advantageous.