Recently ,the RevMob ads performance in iOS , getting poor.
After update to latest SDK with daily build have been over 15 days .
daily impressions in iOS over 16K and clicks still keep over 8K as usual
The result is getting worse but not better. The install rate form 0.5% down to 0.08%
Today I got email form GUI and Jan. They said because Coroan support IDFA too late. They seems no solution for this right now. 
yesterday I build 2 Apps (Native iOS and Corona) to test RevMob behavior ,it seems they still have something can do , But not all Corona problem .
simple result is
1.in iPad mini , My iOS install (2 new app install and play) are all no count include Native iOS SDK and Corona SDK .
2. in iPad1 ,they should not show up ads (iOS5 do not support IDFA) , but they still show ads. if user install app , it never count for you, you do a free job ~ :wacko:
Native iOS sdk do not show ads, but Corona version show ads .
the result as below
=====================
1 app build by Native iOS SDK 5.8.0 , the other is Build by Corona with SDK 5.2.1
On 2 Devices , iPAD1 and iPAD mini
iPAD mini :
The behavior is almost the same. their show the same app at same time .
then I install a App “Top stylist” to play via native iOS SDK . and install another App “Ant smash” your i house app .
I
can make sure these 2 apps never install in my iPad mini before . But
until now . the install count still show up in Dashboard form
yesterday.
iPAD1 :
this case would be a little serious.
In
Native iOS SDK . it would not show anything , because iPad1 only
support to iOS 5.X . so their can got IDFA ,so it do not show any ads
But in Corona build . it show up the ads , and I install it .
still not install count . in new SDK , you show not show up any ADS on
iPAD1 . because you can not trace their .
I think this is bug . please fix it . This should be fixed in your server side .