Media company Bonnier has taken part in a $5.9m round for fertility tracking app provider Natural Cycles through its Bonnier Media Growth investment subsidiary.

Sweden-based fertility tracking app developer Natural Cycles is raising SEK50m ($5.9m) from investors including Bonnier Media Growth, the corporate venturing arm of media conglomerate Bonnier.

Bonnier was joined in the round by venture capital firms Sunstone Capital and E.ventures, both of which participated as existing backers, though Natural Cycles has not disclosed information regarding earlier funding.

Natural Cycles has built a fertility tracking app that has been clinically tested, and which it claims is as effective at preventing pregnancies as…