We have found that adding the Apptentive cocoa pod to an existing Xcode project may potentially not include some of our required frameworks.
Check your linker flags:
Target > Build Settings > Other Linker Flags
You should see -lApptentiveConnect
listed as a linker flag:
... -ObjC -lApptentiveConnect ...
You should also see our required Frameworks listed:
UIKit
-ObjC -lApptentiveConnect -framework Accelerate -framework CoreData -framework CoreGraphics -framework CoreText -framework Foundation -framework QuartzCore -framework SystemConfiguration -framework UIKit -framework CoreTelephony -framework StoreKit