• AdMob (Google Inc.):
  https://www.google.com/policies/privacy/
• Amazon Publisher Services (Amazon.co.jp)
  https://www.amazon.co.jp/gp/help/customer/display.html?nodeId=201909010
  https://www.amazon.co.jp/gp/help/customer/display.html?nodeId=G7LUHQG6TKZRR4QQ
• AppDiscovery (AppLovin Corporation)
  https://www.applovin.com/privacy/
• AppsFlyer (AppsFlyer Ltd.):
  https://www.appsflyer.com/privacy-policy/
• DT Exchange (Digital Turbine, Inc.)
  https://www.digitalturbine.com/privacy-policy/
• Supply Partner Services (Index Exchange Inc.)
  https://www.indexexchange.com/privacy/
• InMobi supply side platform (InMobi Pte. Ltd. )
  https://www.inmobi.com/privacy-policy
• Liftoff Google OB (LIFTOFF, INC):
  https://liftoff.io/privacy-policy/
• Magnite Platforms (Magnite, Inc.)
  https://www.magnite.com/legal/advertising-platform-privacy-policy/
• Meta Audience Network (Meta Platforms, Inc.):
  https://www.facebook.com/privacy/policy/
• OPENX SERVICE（OpenX Limited）
  https://www.openx.com/legal/ad-exchange-privacy-policy/
• Pangle Publisher Service (Bytedance Pte. Ltd.)
  https://www.pangleglobal.com/privacy/enduser-en
• PubMatic Services (PubMatic, Inc.):
  https://pubmatic.com/legal/privacy-policy/
• A9 services (Smaato, Inc.):
  https://www.smaato.com/privacy/