Your body is changing. Your privacy shouldn't.
CycleVault is the first perimenopause and menopause tracker where predictions, anomaly detection, and clinician reports are computed entirely on your iPhone with Apple's on-device AI. No account. No cloud. No tracking.
Sound familiar?
Cloud trackers sell your most intimate data
A 2025 jury found a leading period app jointly liable for sharing cycle data. 71% of period apps share with third parties.
Fertility apps can't read perimenopause
Apps built for 28-day cycles flag your irregular 21–90 day cycles as 'abnormal data' instead of interpreting them.
Your wearable knows more than your period app
Your watch tracks sleep, temperature and HRV — but your tracker never connects them to your symptoms.
Everything you need
On-device AI insights
Apple Foundation Models interpret your symptoms and stage right on your phone — zero cloud inference.
Perimenopause-first staging
STRAW+10 menopausal-transition staging, not a 28-day fertility calendar. Variability is the signal, not a bug.
HealthKit biometric correlation
Wrist temperature, HRV, resting heart rate and sleep, locally joined to your symptom logs.
Clinician-ready PDF reports
Walk into your gynecologist appointment with a 90-day report: cycle variability, VMS load, sleep impact.
Done-for-you logging
We detect hot flashes from your overnight biometrics and ask one confirmation tap — no 60-question journals.
You always own your data
Export everything as JSON anytime. Even a lapsed subscription keeps read-only access. Never a hostage.
Simple, transparent pricing
Start free, upgrade when you need more power.
- On-device AI insights
- Clinician PDF reports
- HealthKit correlation
- 14-day free trial
- Everything in Monthly
- 43% off
- Full cycle history
- Everything, forever
- Launch deal
- No subscription
Built for power users
Walking into a hormone-therapy appointment
Hand your gynecologist a 90-day report and get a therapy decision in one visit instead of three.
Making sense of 3am night sweats
See whether last night's wrist-temp spike and HRV drop line up with your cycle — privately.
Leaving a cloud tracker for good
Import your history, get a Day-0 insight, and never transmit a cycle again.
Frequently asked questions
Does my data really stay on my phone?
Yes. CycleVault has no server and makes no network calls with your cycle data. A built-in test gates every release to prove zero outbound traffic. Insights are generated by Apple's on-device AI.
Do I need an account?
No. There's no email, no name, no sign-up. You open the app and begin.
What if I don't have the newest iPhone?
On-device AI narratives require iPhone 15 Pro or newer. On older devices CycleVault uses deterministic insights with the same private, on-device math.
What happens if I stop subscribing?
You keep read-only access to your last 30 days and can export everything as JSON. Your data is always yours.
Is this a diagnosis?
No. CycleVault gives you a private interpretation and a clinician-ready report so you can have an informed conversation with your doctor.
Track your transition. Keep your privacy.
Join the women who left cloud trackers behind. Lifetime access for $79 during launch.