About
Built by one man. For every man who wants to do better.
The story
I didn’t know what “luteal phase” meant until I was 35.
I’d been married. I’d had girlfriends. I’d become a father. And I still couldn’t tell you the difference between ovulation and menstruation. Not because I didn’t care. Because no one ever told me I should know.
After my divorce, I started dating someone new. Younger. I noticed her moods tracked her cycle in a way I’d never paid attention to before. I wanted to be supportive — but I didn’t feel right asking her to install Flo on date three.
So I tried generic trackers. Every single one was designed for the person menstruating. Pink interfaces. Fertility windows. “Mama-to-be” badges. None of them spoke to me.
I asked friends. Several said the same thing: yeah, I’d use that. Then it hit me — I also wanted to keep an eye on my daughter’s cycle, so I could be a better father when the time came. No app on earth let me track more than one person.
Every man has more than one woman in his life. A partner, a daughter, a mother, a sister. This isn’t about lovers. It’s about caring for the people who matter.
If I’d had this app in my marriage, maybe things would have been different. Maybe not. But at least I’d have known what I was looking at.
— Devlet
What this app is. And isn’t.
Five rules. No exceptions.
01 — Built for the partner.
PeriodBro is built for partners, fathers, sons, brothers — not for the person menstruating. Different user. Different language. Different problem.
02 — More than one woman.
Multi-profile from day one. Your partner. Your teenage daughter. Your mom. The women in your life don’t sync — your tool shouldn’t pretend they do.
03 — Privacy is the product.
Local-first storage. No data selling. No ads. No “anonymized aggregate” loopholes. In a post-Roe world, this isn’t a feature. It’s a non-negotiable.
04 — No pink. No jokes. No coping.
No pastel UI. No “she’s PMSing again” gags. No fertility tracking. The point isn’t to survive her cycle — it’s to understand it.
05 — Man-to-man, every screen.
Plain language. No corporate wellness spin. No condescension. The tone is a friend over a beer who happens to have read the science.
Where we are
One founder. MVP shipped. Building in public.
It’s just me — Devlet Butaev. No funding round. No marketing team. No “we” pretending to be plural. I write the code, I write the articles, I read every email.
Version 1 is live. It’s free to try. It’s not finished — and I’d rather tell you that up front than pretend otherwise. Version 2 will be shaped by what you tell me works, what doesn’t, and what’s still missing.
If that sounds like something you want to be part of, you’re in the right place.
Try it. Then tell me what’s broken.
The app is free. Your feedback is what shapes version 2. There’s no support queue — emails come straight to me.
Or drop me a line directly — every email lands in my inbox