Free for everyone through January 31, 2027
Not a diagnosis. A pattern.
Built for women who are told “it’s nothing.”
Hormone OS reads your Apple Health data, takes a 60-second daily check-in, and sends you a weekly plain-English report on what your body is actually doing — and what’s worth bringing to your doctor.
Available now for iPhone. Free through January 31, 2027. On Android? Sign up to be notified and get early access to the Android version.
Why this exists
Something’s changing. Nobody will tell you what.
You’re 38. Your periods got weird at 35. You were told it’s too early for perimenopause.
Perimenopause can start a decade before menopause, and most cycle apps treat it as an afterthought. Hormone OS is built for exactly that gap — the years when something is clearly changing and nobody will name it.
How it works
Step one
It reads what your body records.
Sleep, heart rate, cycle, temperature — the signals you're already generating in Apple Health, finally looked at together.
Step two
You talk to it for 60 seconds.
Voice or text. Tap a number, name what's showing up. The whole thing fits between coffee and the door.
Step three
A weekly report that reads like a friend.
Plain English. Specific patterns flagged. Suggested questions to bring to a doctor — in your own voice.
What the report gives you
Every week
- Your cycle, sleep, heart rate and symptoms, read together
- The patterns that keep showing up across weeks, not days
- What changed, and what it usually means
When it matters
- A flag when three things line up across two cycles
- The exact question to ask your doctor, in your words
- Language you can actually use at an appointment
Not a diagnosis
We never tell you what’s wrong.
Hormone OS shows patterns in your own data. It doesn’t tell you what they mean for you — it hands you the pattern and the question, and you take both to a clinician you trust.
Your data stays yours
Processed on your phone. Never sold.
Health data is handled on your device wherever possible, never sold, and never shared without your say-so. Delete everything, any time — it’s yours.
Get the app
It’s on iPhone. Start today.
Download it on the iPhone you already wear your watch or ring with, and your first weekly report is a check-in away. Free through January 31, 2027. On Android? Sign up to be notified and get early access to the Android version.