Dayima

Dayima is a mobile application centered on menstrual health, designed to care for women's health, with over 100 million downloads. As of March 2015, registered users exceeded 80 million, and daily active users surpassed 4.2 million. In May 2014, Dayima secured $30 million in financing led by Ceyuan Capital, with participation from Bertelsmann and Sequoia Capital. In 2012 and 2013, it received Series A financing led by Bertelsmann and Series B financing led by Sequoia Capital, respectively. In October 2015, Dayima received an additional investment of RMB 130 million from Haitong Kaiyuan Investment Co., Ltd., By-Health, and founder Chai Ke, bringing its financing status to Series D.


Yima Aimai is a wholly-owned subsidiary of Dayima. As Dayima's innovation engine, it bears the responsibility of exploring new products and commercialization models for Dayima. We refine strategic-level macro ideas into well-defined, executable, and evaluable projects, using lean principles and methods to quickly test hypotheses, gain valuable insights through data, and drive Dayima's strategic development.