About this app
What QuietCycle does
QuietCycle is the period and fertility tracker that physically cannot leak your data — because it has no account, no analytics, and no network capability at all. Everything lives on this iPhone. This matters now more than ever. Flo settled with the FTC for sharing sensitive cycle and fertility data with Facebook, Google, and analytics firms. Post-Dobbs, privacy advocates have warned that reproductive-health-app data could be subpoenaed. Flo, Glow, and Ovia are all cloud-account apps; their privacy fixes are patches on a fundamentally networked architecture. QuietCycle is built differently from the first line of code. What QuietCycle does: — Log your cycle in seconds. Period start/end, flow, symptoms, mood, cervical mucus, basal body temperature. A clean calendar shows your history. — Fertile-window estimate. Calendar and temperature method, computed on-device. Clearly labeled as an estimate, not contraception. — Optional HealthKit. If you choose, QuietCycle reads and writes Apple Health's local menstrual-cycle store — which itself never leaves your devices. — Cycle insights. Average cycle length, period length, variability — charted on-device. — No account. No email. No cloud. No network entitlement. The app literally cannot transmit your data anywhere. — Optional passcode + Face ID lock on the whole app. For the tens of millions of US menstruating adults who want to track their cycle without becoming a data point in a court case or an ad profile.
Features
Built to be useful, not noisy.
Calendar
Cycle history at a glance; tap a day to log
Log day
Flow, symptoms, mood, cervical mucus, BBT
Fertile window
On-device estimate, clearly labeled non-contraceptive
Insights
Avg cycle/period length + variability (Swift Charts)
Privacy lock
Face ID / passcode lock; explains no-network design
Why it exists
The problem
People want to track their cycle and fertility but the dominant apps (Flo, Glow, Ovia) are cloud-account-based; Flo settled with the FTC for sharing sensitive data with Facebook/Google, and post-Dobbs that data could be subpoenaed.
What's different
How QuietCycle stands out
QuietCycle is the only cycle tracker that ships with no network entitlement at all (it physically cannot transmit data), no account, and optional local-only HealthKit integration — Flo settled with the FTC for sharing data with Facebook/Google and bolted on a reactive 'anonymous mode,' Glow collects sexual-activity +…
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FAQ
Questions about QuietCycle
How much does QuietCycle cost?▾
QuietCycle is free. All features are included from day one — no subscription, no in-app purchases, no paid tiers. Everything you see in this listing works the moment you install it.
Where does QuietCycle store my data?▾
On your device. QuietCycle is built privacy-first: no account is required, no analytics SDKs, no third-party trackers. Nothing is uploaded to a server we control — the app works without one.
What platforms does QuietCycle support?▾
iOS, on iPhone and iPad. You can find the latest availability on this page.
How do I get support for QuietCycle?▾
Use the Support link on this page, or email support@allthingsn.com. We answer every message and keep responses on the same thread.
The story
Meet QuietCycle — Cycle tracking that can't leak
Read the full write-up · 4 min →
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