She doesn’t need you to fix it. She needs you to understand it.
I built PeriodBro after realising I’d been a partner, a husband, a father — and I still didn’t understand the most basic thing about the women I loved. This app is what I wish I had years ago.
Every sign-up = one better relationship.
That’s why the first 1,000 users get PeriodBro completely free.
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Latest Blog Posts
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How to Track Your Partner’s Cycle Without Being Creepy
When I first started tracking my girlfriend’s cycle, I didn’t tell her. Not because I thought it was wrong — I was doing it to be more aware, to stop being blindsided by difficult weeks, to be a better partner. But I also hadn’t really thought about whether to mention it, so I just didn’t….
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What Is Ovulation and Why Should Men Care?
Ovulation is one of those words that most men associate exclusively with pregnancy planning. Either you’re trying to have a baby and ovulation becomes very important very quickly, or you’re not, and it seems irrelevant. It’s not irrelevant. Ovulation is the hormonal peak of the entire menstrual cycle — a 24-hour event that produces effects…
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The Four Phases of the Menstrual Cycle: A Guide for Men
Most men can tell you roughly what a period is. Almost none can explain what happens in the three weeks surrounding it. And that gap — between “she’s on her period” and everything else — is where most of the confusion, the misread signals, and the missed opportunities to actually help are hiding. The menstrual…
Built by a man who learned the hard way.
Thanks to PeriodBro, I now understand my girlfriend’s needs better and can support her emotionally and physically throughout her cycle. After my divorce, I started dating again. I noticed her moods shifted in a pattern — and I was always caught off guard. I started tracking manually in a notes app. Then I realised my daughter needed the same awareness from me. No app existed for this. So I built one.
This app truly helps me be there for my partner!
Devlet Butaev
Founder, PeriodBro
The Science Behind the App
Every feature in PeriodBro is grounded in peer-reviewed research. Not vibes. Not guesswork. Science.
The Four Seasons Are Real
What estrogen, progesterone, and LH actually do to her mood, energy, and desire — across 4 phases backed by 102 studies.
Read the research →Your Response Changes Everything
82% of men lack adequate menstrual knowledge. But knowledge alone doesn’t change behavior — here’s what does.
Read the research →The Dad She Can’t Talk To
0% of daughters would ask their father for menstrual help — even in close relationships. Research reveals why.
Read the research →No subscription required to get started.
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