The Apple Search Ads Benchmarks Report for H2 2021 shows that the mobile app market has been growing globally, with 230 billion mobile app downloads in 2021. The report analyzes how Apple Search Ads performed in Q3 and Q4 of 2021 across various categories and markets. The report provides industry benchmarks for average Tap-Through Rate (TTR), Conversion Rate (CR), Average Cost per Tap (CPT), and Average Cost per Acquisition (CPA) for overall, categories, countries, and regions. The report aims to help mobile developers improve discoverability and unlock mobile growth by comparing their app performance against industry benchmarks.