Bertelsmann has come back to re-invest in a series B round of funding for China-based Dayima, a menstruation period tracking app. The financial details were not specified, but the latest round is worth tens of millions of dollars. Venture capital firm Sequoia Capital also participated.

German media group Bertelsmann is closing in on a series B round of funding alongside venture capital firm Sequoia Capital for China-based Dayima, a menstruation period tracking app, according to a report by technology news site, Technode. The deal is worth tens of millions of dollars, however, the financial details were not specified.

Dayima predicts period cycles based on past patterns. It also provides users with health tips on avoiding cramps and pre-menstrual syndromes, and links to online forum where users…