I want to add RevMob add in my app but there are some errors
Undefined symbols for architecture i386: \"_OBJC_CLASS_$_SKStoreProductViewController\", reference
I faced similar issue and after long search and checking sample RevMob code, i found this solution, may be help others:
Under project target, select Build Settings, under Deployment, check iOS Deployment Target, change the value to 'iOS 9.0' or higher.
I hope this help.