The Appnext platform operates exclusively on a Cost-Per-Install (CPI) and Cost-Per-Click (CPC) bidding basis. It means that the Appnext publishers are paid every time their users install the apps served by Appnext. Or if successful in serving CPC campaigns when users will click on the ad.
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 In case you experience low conversion rates, please contact our support team (support@appnext.com) who will be happy to help with integration and optimization.