iOS App · Apple Intelligence · HealthKit

You're not
imagining it.

Perimenopause is real, and it's different for every woman. Hazel Health helps you understand what's happening in your body — and find the care you deserve.

Hazel Health Today tab — Hazel Number 89, Thriving
Hazel Health Today tab — Hazel Number 63, Running low

The Reality

Most apps weren't
built for this.

Perimenopause isn't a pregnancy you're tracking. It's months — sometimes years — of irregular cycles, night sweats, brain fog, and a medical system that keeps telling you your labs are "normal."

The apps designed for younger women ignore the chaos phase. Hazel Health syncs with your Apple Watch or fitness device, shows you what's actually happening, and helps you walk into your next appointment with evidence.

50M
Women in the US currently navigating perimenopause
4 yrs
Average time to get a correct diagnosis
1 in 3
Women who say their doctor dismissed their symptoms

What Hazel Health Does

Finally, an app that
understands the chaos phase.

☀️
Daily Understanding

Why Am I Like This?

Every morning, Hazel gives you a specific, evidence-based explanation of what perimenopause is doing to your body today — based on your cycle, your sleep, and your logged symptoms. Not generic. Not guesswork.

🌿
Daily Moves

Food & Movement for Where You Are

One food suggestion, one movement suggestion, every day. Calibrated to your cycle phase and how you logged feeling. Not Pinterest wellness advice — guidance tuned to your body this week.

💜
Care Access

Find a Doctor Who Gets It

Hazel's doctor finder understands MSCP credentials and insurance barriers. We help you find a specialist who actually knows perimenopause — not a generalist who'll tell you it's stress.

The Believe Me Report

Walk into your next
appointment prepared.

Hazel Health generates a clinician-ready summary — your symptoms, your patterns, your biometric data — formatted for a doctor's visit. No more trying to remember everything at the desk. No more being dismissed.

Download Hazel Health
Hazel Health — Symptom Summary
Prepared for: Your Next Appointment
Tracking period6 weeks
Top logged symptomNight sweats 18 events
Avg. sleep disruptions2.4 per night
HRV pattern↓ 14% in late cycle
Resting HR spikes3–4 AM consistently
Generated byHazel Health · On-device · Private

What You'll Need

Hazel Health is built on
the best Apple tech.

To get the full experience, you'll need a modern iPhone with Apple Intelligence enabled and a device syncing to Apple Health. Here's what works.

📱
iPhone with Apple Intelligence

Hazel Health runs its daily card on Apple Intelligence — the on-device AI that keeps your health data private. This requires a newer iPhone.

iPhone 15 Pro or newer iOS 18.1+

Apple Intelligence must be enabled in Settings → Apple Intelligence & Siri, with English (US) selected as the language.

A Device Syncing Apple Health

Hazel reads HRV, resting heart rate, and sleep data from Apple Health. The more data your device provides, the sharper your daily card gets.

Apple Watch Garmin WHOOP Fitbit Oura

Apple Watch is strongly recommended for the most accurate overnight HRV and heart rate data.

🏥
HealthKit Permission

Hazel reads from Apple Health — it never writes health data or sends it to a server. You choose exactly what it can see during setup.

Reads: HRV, Sleep, HR

You can use Hazel without a wearable using iPhone's built-in sensors, but wearable data makes a significant difference.

Don't have Apple Intelligence yet? Go to Settings → Apple Intelligence & Siri and tap "Turn On Apple Intelligence." It will download in the background (around 500 MB). You'll also need your iPhone language set to English (United States). Once downloaded, open Hazel Health and your personalized daily card will be waiting.

Privacy

Your data never
leaves your device.

Hazel Health processes everything on-device. Your cycle, your sleep, your intimate health data — none of it goes to a server. Not now, not ever.

🔒
On-Device AI
All insights run locally via Apple Intelligence. No cloud inference, no data egress.
❤️
HealthKit Native
We read health data directly from HealthKit. It never passes through our servers.
🚫
No Third-Party Sharing
We don't sell, share, or license your health data. Full stop.

Women Like You

You're not the only one
who needed this.

"

Nobody told me about all this stuff you got to go through. Hazel was the first time something just explained it.

Beth, teacher, 44

"

I brought the Believe Me report to my OB. For the first time in three years she actually listened.

Sandra, 47

"

I thought I was developing early dementia. Hazel showed me my HRV at 3 AM and I finally understood what was happening.

Alex, 51