Impression-level ad revenue

When an impression occurs, the Google Mobile Ads SDK calls the paid event handler with its associated revenue data. By implementing this handler, you can use the data to calculate a user's lifetime value, or forward the data downstream to other relevant systems.

This guide is intended to help you implement LTV data capture in your iOS app.


Implementing paid event handler

Each ad format has a paidEventHandler property of type GADPaidEventHandler. During the lifecycle of an ad event, the Google Mobile Ads SDK monitors impression events and invokes the handler with an earned value.


class ViewController: UIViewController, GADFullScreenContentDelegate {
  var rewardedAd: GADRewardedAd?
  func requestRewardedAd() {
      withAdUnitID: "AD_UNIT_ID", request: GADRequest()
    ) { (ad, error) in
      if let error = error {
        print("Rewarded ad failed to load with error: \(error.localizedDescription)")
      if let ad = ad {
        self.rewardedAd = ad
        self.rewardedAd?.paidEventHandler = { adValue in
          // TODO: Send the impression-level ad revenue information to your preferred analytics
          // server directly within this callback.

          // Extract the impression-level ad revenue data.
          let value = adValue.value
          let precision = adValue.precision
          let currencyCode = adValue.currencyCode

          // Get the ad unit ID.
          let adUnitId = ad.adUnitID

          let responseInfo = ad.responseInfo
          let loadedAdNetworkResponseInfo = responseInfo?.loadedAdNetworkResponseInfo
          let adSourceId = loadedAdNetworkResponseInfo?.adSourceID
          let adSourceInstanceId = loadedAdNetworkResponseInfo?.adSourceInstanceID
          let adSourceInstanceName = loadedAdNetworkResponseInfo?.adSourceInstanceName
          let adSourceName = loadedAdNetworkResponseInfo?.adSourceName
          let mediationGroupName = responseInfo?.extrasDictionary["mediation_group_name"]
          let mediationABTestName = responseInfo?.extrasDictionary["mediation_ab_test_name"]
          let mediationABTestVariant = responseInfo?.extrasDictionary["mediation_ab_test_variant"]


@import GoogleMobileAds;
@import UIKit;

@interface ViewController ()
@property(nonatomic, strong) GADRewardedAd *rewardedAd;

@implementation ViewController
- (void)requestRewardedAd {
  __weak ViewController *weakSelf = self;

  GADRequest *request = [GADRequest request];
   completionHandler:^(GADRewardedAd *ad, NSError *error) {
    if (error) {
      NSLog(@"Rewarded ad failed to load with error: %@", [error localizedDescription]);
    self.rewardedAd = ad;
    self.rewardedAd.paidEventHandler = ^void(GADAdValue *_Nonnull value){
      ViewController *strongSelf = weakSelf;
      // TODO: Send the impression-level ad revenue information to your preferred analytics
      // server directly within this callback.

      // Extract the impression-level ad revenue data.
      NSDecimalNumber *value; = value.value;
      NSString *currencyCode = value.currencyCode;
      GADAdValuePrecision precision = value.precision;

      // Get the ad unit ID.
      NSString *adUnitId = strongSelf.rewardedAd.adUnitID;

      GADAdNetworkResponseInfo *loadedAdNetworkResponseInfo =
      NSString *adSourceName = loadedAdNetworkResponseInfo.adSourceName;
      NSString *adSourceID = loadedAdNetworkResponseInfo.adSourceID;
      NSString *adSourceInstanceName = loadedAdNetworkResponseInfo.adSourceInstanceName;
      NSString *adSourceInstanceID = loadedAdNetworkResponseInfo.adSourceInstanceID;
      NSDictionary<NSString *, id> *extras = strongSelf.rewardedAd.responseInfo.extrasDictionary;
      NSString *mediationGroupName = extras["mediation_group_name"];
      NSString *mediationABTestName = extras["mediation_ab_test_name"];
      NSString *mediationABTestVariant = extras["mediation_ab_test_variant"];

For more information on the winning ad source, see Retrieve information about the ad response.

Integrating with App Attribution Partners (AAP)

For complete details on forwarding ads revenue data to analytics platforms, refer to the partner's guide:

Partner SDK

Implementation best practices

  • Set the handler immediately once you create or get access to the ad object, and definitely before showing the ad. This ensures you don't miss any paid event callbacks.
  • Send the paid event information to your preferred analytics server immediately at the time the paidEventHandler method is called. This ensures you don't accidentally drop any callbacks and avoids data discrepancies.


GADAdValue is a class that represents the monetary value earned for an ad, including the value's currency code and its precision type encoded as below.

GADAdValuePrecision Description
GADAdValuePrecisionUnknown An ad value that's unknown. This gets returned when LTV pingback is enabled but there isn't enough data available.
GADAdValuePrecisionEstimated An ad value estimated from aggregated data.
GADAdValuePrecisionPublisherProvided A publisher provided ad value, such as manual CPMs in a mediation group.
GADAdValuePrecisionPrecise The precise value paid for this ad.