She'll wonder how you know.
Yuni tells you what she needs — before she has to.
or try on web →
Yuni tells you what she needs — before she has to.
or try on web →
How it works
Who is Yuni for?
Yuni is a menstrual cycle tracker for men — boyfriends, husbands, and partners who want to understand what their significant other is going through. Most period apps are designed for women to log their own symptoms. Yuni is different: it's designed for you to know what phase she's in and exactly how to show up for her.
Each phase of her cycle needs a different kind of support.
Comfort & practical support
Activities & planning time
Quality time & connection
Patience & calm environment
Stay low-key, tread lightly
He gets daily guidance. She gets cycle insights. Both stay in sync.
His view
Her view
Available on the web
No iPhone needed. Use Yuni from any browser on any device.
Sarah's cycle
Today's tip
She's at her most radiant. Plan something special tonight — she'll be fully present.
Glanceable on your Lock Screen and Apple Watch.
What partners are saying.
Finally an app that helps me understand what my girlfriend needs during her cycle. I used to just guess — now I actually know what phase she's in and how to help.
I used to dread PMS week. Now I get a heads-up and actual advice on what to do. She noticed the difference in the first month — couldn't believe I downloaded a period tracker app.
The Apple Watch complication is a game changer. One glance at my wrist and I know what mode she's in. It's like a cheat code for being a better boyfriend.
No account, no cloud — I love the privacy angle. My data stays on my phone and that's exactly how it should be. The whole setup took 30 seconds.
Five different modes for each cycle phase is genius. Menstruation mode reminds me to bring her tea and a hot water bottle. She said I've levelled up as a partner.
My wife set it up for me and was amazed when I started being more thoughtful around her cycle. It's not complicated — just enter the dates and follow the daily tips.
Viral on Threads
No accounts. No cloud. No tracking. Everything stays on your device.
Be the partner you want to be.
From the Blog
Understanding Her Cycle
What each phase feels like for her — and exactly how to show up during each one.
Read →Practical Support
15 practical things you can do right now to make a real difference.
Read →PMS Guide
Why PMS causes tension and what you can actually do about it.
Read →Yuni is a period tracker designed for partners. It helps you understand your significant other's menstrual cycle and gives you daily guidance on how to be supportive through each phase — menstruation, follicular, ovulation, luteal, and PMS.
Yuni tracks her cycle phases and gives you tailored daily tips. During menstruation you get comfort and care suggestions, during the follicular phase you get activity ideas, and during PMS you get heads-up guidance to tread lightly. Each of the 5 modes offers specific, actionable advice.
Yes. Yuni is built specifically for partners — boyfriends, husbands, and anyone who wants to understand and support their significant other through her menstrual cycle. It explains cycle phases in simple terms and gives daily guidance on what she needs.
Yuni has 5 modes matching each cycle phase: Extra Care (menstruation — comfort and practical support), Energize (follicular — activities and planning), Connect (ovulation — quality time and connection), Nurture (luteal — patience and calm), and Heads Up (PMS — stay low-key and tread lightly).
Absolutely. Yuni has no accounts, no cloud storage, and no tracking. All data stays on your device. There is nothing to hack or leak because nothing ever leaves your phone.
Yes. Yuni has an Apple Watch app and Lock Screen widgets so you can check her current cycle phase at a glance without opening your phone.
Yuni is free to download and comes with a free trial that gives you full access. After the trial, a subscription unlocks premium features — daily guidance, streaks, challenges, and weekly recaps. Plans start at $4.99/week or $79.99/year.
Enter her most recent period start date and average cycle length in Yuni. The app calculates her current phase automatically — you don't need to update it every month.
Yuni's Heads Up mode activates automatically in the days before her period. It gives you specific guidance: stay calm, avoid confrontations, be extra patient, and do small practical things like preparing her favourite snacks or clearing your schedule for quiet time together.
Yes — Yuni is built specifically for that. Unlike women's period trackers, Yuni shows you what you should do each day based on where she is in her cycle. It's designed to be used by the partner, not the person menstruating.