Mobile devices due to their widespread use and high user base are an attractive advertising target. An advertiser can target users based on their interests, location, age, and gender. Advertiser can also target users based on type of device like smartphone or tablet they are using. App advertisers can target ads to users who have already interacted with their app thanks to first-party data. First-party data helps app advertisers determine who their target audience is and enables them to target ads more precisely.