Reporting

As with other campaign types, you can use GoogleAdsService.Search to retrieve performance metrics for App campaigns. For example, the query below will retrieve impressions and clicks from the last 30 days for all App campaigns, segmented by date.

SELECT
  campaign.id,
  campaign.name,
  campaign.advertising_channel_type,
  campaign.advertising_channel_sub_type,
  campaign.app_campaign_setting.app_id,
  campaign.app_campaign_setting.app_store,
  campaign.app_campaign_setting.bidding_strategy_goal_type,
  segments.date,
  metrics.impressions,
  metrics.clicks
FROM campaign
WHERE campaign.advertising_channel_type = 'MULTI_CHANNEL'
  AND segments.date DURING LAST_30_DAYS

GoogleAdsService does not currently support reporting at the ad group or audience levels, so all metrics must be fetched at the campaign level, even if you have set up different settings per ad group. Ad group-level metrics reporting will be supported in a future version.