TopOn is an ad mediation platform that helps global app developers to find a perfect fit for your monetization strategy. Based on the intelligent mediation management tool by big data, TopOn provides developers with convenient monetization management functions such as waterfall layering, header bidding, segment group, A/B test, cross-promotion, API management, etc., to quickly implement refined operation strategies. At the same time, it is equipped with multi-dimensional data reports, accurately compares the advertising platform API data and displays in detail key data such as user duration, advertising display frequency, DEU, LTV, retention, etc., to help developers maximize advertising revenue. On May 2020, TopOn announced the completion of tens of millions of yuan in Pre-A round financing. The investor was Shanghai Xianqin Venture Capital Co., Ltd.