ask:I started charging money on my app. Flurry says 2k download, iTunes says 200

Hello,

I've developed an iOS application. My application has been receiving a steady download rate of 5K per day. Lately, I've become short on money and decided to start charging money for downloading the app.

From that point onwards AppStore reported a decline to around 200 installs per day, whereas Flurry, Facebook and crashalytics have all been reporting ~2 k new app installs.

How could that be? What am I missing?