Dayima, a menstruation period tracking app, received tens of million dollars in Series B financing from Sequoia Capital and Series A investor Bertelsmann. The company’s founder Chai Ke confirmed that all the investment procedures will be nailed down within 45 days.

The capital will be invested in improving service quality and strengthening technology team, especially talent with professional gynecological knowledge. At the same time, Dayima will increase investments in marketing and branding, according to Chai.

Dayima predicts period cycles based on past patterns, offering health tips on avoiding cramps and pre-menstrual syndromes, and links to online forum where users can exchange their experiences. The app has recorded 18 million registered users and 1.9 million daily active users since its launch in January 2012.

The company tried to commercialize the service by featuring content ads from fashion brands, such as, Rayli. Chai said advertisement is just a complementary model and ideal monetization model is to get users to pay for the company’s services.

According to report by Kuailiyu, Cai Wensheng, chairman of photo-centered app Meitu, invested millions of yuan in Series A+ financing in Dayima to launch strategic cooperation with the company, because these two apps targeted at the same group of customers. Sequoia Capital hopes to integrate Dayima with other female-targeted services it invested in previously, Lefeng, Meilishuo, and Jumei.

Emma Lee (Li Xin) was TechNode's e-commerce and new retail reporter until June 2022, when she moved to Sixth Tone to cover technology and consumption. Get in touch with her via or Twitter.

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