Adaptive Health for Women

Your body changes. Your plan should too.

An iPhone coach that combines Apple Health with a daily check-in to help you decide how to train, fuel, and recover today.

Join Early Access
iPhone
Native, with Apple Health
On-device
Cycle information stored on your device
Cited
Every recommendation traces to a study
Wren's morning check-in asking how you are arriving today
Wren Training screen showing today's workout
Wren reading a low-energy check-in and suggesting a protein-forward lunch, with a link to the research behind it
How it works

Three minutes in the morning. A plan for the day.

Wren reads what your body is already telling you — then turns it into what to actually do.

  1. 1

    Check in

    Tell Wren how you slept, how you feel, and what your day looks like. If you enable cycle tracking, Wren can also show a calendar estimate of your cycle day.

  2. 2

    Get guidance

    Training, fuel, and recovery for today — in one place, with the research behind each call one tap away.

  3. 3

    Adapt

    Feeling strong? Short on time? Sore? The plan shifts with your body, your schedule, and how you actually feel — not the plan you wrote on Sunday.

Works with Apple Watch & Apple Health

Wren integrates with Apple HealthKit to read your workouts, activity, and health data — so your coaching adapts to what your body is actually doing.

Apple Health
HealthKit integration — live now
Built on Real Research

What the Research Actually Says

Every recommendation in Wren traces back to peer-reviewed research in exercise physiology and women's health. We're explicit about what the evidence actually supports — and what it doesn't.

Cycle Tracking in Beta
Calendar estimates are shown as estimates and do not change beta recommendations
Privacy-First by Design
Cycle observations are stored on your device, not on Wren's servers
Read how we approach the science

Cycle Tracking in Beta

Calendar Estimate
Calendar illustration of a menstrual cycle

During beta, cycle phase does not change training, nutrition targets, Fuel Score, Next Best Move, or Coach responses. Symptoms you log can still support today's capacity guidance.

See the research behind every recommendation.

Wren cites its sources. Join early access and read the reasoning as you use it.

Join Early Access
What's Coming

The Road to Launch

Invite-only first, then a wider early release, then everyone. Early access members move through in that order.

Now

Private TestFlight

Early access members get the app first, with a direct line to share feedback as we build.

Next

Early Release

A limited release for people on the early access list — still invitation-only, still before the public launch.

After that

Public Launch

Wren opens to everyone — built on everything we learned in private beta.

What We're Building

The features coming to Wren — no hard dates, just the right order

Adaptive AI Coaching

Conversational coaching that adapts workouts in real time based on your cycle, readiness, and how you feel today.

Female HRV & Biometric Interpretation

ML models designed specifically to interpret female heart rate variability patterns across cycle phases.

Get in before the public launch.

Early access members get the app first — and a direct line to change what comes next.

Join Early Access

How Wren Compares

No one else is doing all of this — for women, in one place.

Competition Wren Female Apps Fitness Apps AI Coaches Wearables Human Trainer
Specific Coaching —
Data Driven Insights — — —
Affordability —
24/7 Personalization — — — —
Research-Informed — — —

Stop forcing your body into someone else's plan.

No one else is doing all of this in one place, for women. Be among the first to use it.

Join Early Access

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