Yori: Period Tracker for Men

Yori is a period tracker built for men — the partners, husbands, boyfriends, fathers and brothers who want to understand the menstrual cycle of someone they love, and show up better for her.

Most period trackers are made for the person who menstruates. Yori is different. It turns her menstrual cycle into clear, science-based guidance for you: where she is today, what each phase of her cycle can bring, and how to support her without guessing. No medical degree required — just the want to understand.

WHAT YORI HELPS YOU DO
• Understand her menstrual cycle phase by phase — period, rising energy, peak and wind-down
• Know when her period is expected, so nothing catches you off guard
• Get a personalised daily insight for exactly where she is in her cycle right now
• Learn how to support her through PMS and the hard days — with empathy, not tactics
• Support more than one person — partner, daughter or sister — each kept completely private

REAL DEPTH ON THE CONDITIONS THAT MATTER
Yori goes further than any other period tracker for men on the conditions that shape so many women's lives:
• PMDD — premenstrual dysphoric disorder
• Endometriosis
• PMOS — polyendocrine metabolic ovarian syndrome, formerly known as PCOS
• Perimenopause and menopause
• Heavy menstrual bleeding
Every word is written to inform you, never to diagnose her — grounded in current clinical research, not folklore or guesswork.

PRIVATE BY DESIGN
Her menstrual cycle is sensitive information, and Yori treats it that way. There is no account, no sign-up and no cloud. Everything stays on your phone and nowhere else. No ads. No tracking. Her data is never sold. You can even lock the app behind a PIN.

ASK, DON'T ASSUME
This is the heart of Yori. The app shows you what's likely — the phase, the patterns, the science. But only she knows what's true for her today. Yori is here to help you understand and support her, never to manage or "handle" her. Better awareness leads to better conversations, and a better partner.

WHO YORI IS FOR
Any man who wants to understand the menstrual cycle of a woman in his life. Whether you're a new partner finding your feet, a husband of twenty years, or a dad supporting his daughter, Yori meets you where you are. Start free — your first insights are included, no card required.

Understand her cycle. Support her better. Show up.

Yori — the period tracker for men.