HushCycle: Private cycle tracking that shows its work.

HushCycle tracks your cycle, ovulation and pregnancy entirely on your iPhone. There is no account, no cloud and no analytics, so there is no server that could leak or sell your data.

Every prediction comes with a confidence level and a “Why this estimate?” screen that lists exactly what it was based on. Logging and predictions are free; Pro adds the Doctor summary PDF and Ask Hush.

What HushCycle does

Period and fertile-window predictions with evidence
Ovulation tests, basal temperature and hormone readings
Irregular-cycle setting and a Perimenopause mode
Week-by-week pregnancy journey
Doctor-summary PDF you control
Encrypted backup you hold, no cloud

Ideal for: Anyone who wants honest, explainable tracking without handing a health profile to a company.

Predictions that show their work

Log periods, flow and symptoms. See them on the calendar and the cycle wheel.
A fertile-window and ovulation estimate, with a confidence meter.
“Why this estimate?” opens the evidence behind each prediction. Newer cycles count more, and the app says so on screen.

One app for each stage

Cycle, Ovulation for when you’re trying to conceive, Pregnancy with week-by-week notes for 42 weeks, and Perimenopause for cycles that are changing.
Cycles that vary? Set Settings → Cycles → Cycle pattern to Regular, Somewhat, Irregular or Not sure. Irregular (including PCOS) shows honest ranges, never “late”.

Numbers, not guesses

LH (mIU/mL), PdG (µg/mL) and E3G (ng/mL) test readings, entered as numbers.
Basal body temperature: a rise of 0.20 °C held for 3 mornings.
Optional Apple Watch wrist temperature, read-only from Apple Health. HushCycle never writes to Health.

A lock with honest limits

An optional 6-digit app PIN (Face ID is off while a PIN is on), and an optional decoy PIN that opens a separate, empty HushCycle.
An encrypted backup file that you seal with a passphrase and keep where you choose. Erase everything whenever you choose: type DELETE to confirm.
The lock protects against someone making you open HushCycle on your iPhone. It does not protect against legal process, device forensics or a backup, and a decoy can’t conceal that HushCycle is installed.

No account. No cloud.

No analytics, no ads, no third-party SDKs. Your logs, readings and settings stay on your iPhone.
The app makes no network requests of its own. An automated test fails the build if networking code appears. Buying or restoring Pro goes through Apple.
App Store privacy label: Data Not Collected.

Some symptoms are worth a call today

From the Pregnancy home, eight symptoms that need a clinician, in plain words. It helps you decide when to call, not what’s wrong.
“Contact your care provider” calls the number you saved; “Not urgent right now” when it isn’t.

Tracking is free. Always.

Logging, predictions, the calendar, the safety check-in and the privacy tools are free forever. HushCycle Pro adds the Doctor summary, a factual PDF you choose to share, and Ask Hush, private questions answered on your iPhone (Ask Hush needs iOS 26 and Apple Intelligence).

HushCycle, Free. Free forever. Tracking is never behind a paywall.
Pro Monthly, $2.99. Per month. Renews automatically.
Pro Annual, $19.99. Per year. Renews automatically.
Pro Lifetime, $29.99. One-time purchase. No renewal.

Prices in USD; they may vary by region, and the App Store shows yours. No free trials. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; cancel in iOS Settings → [your name] → Subscriptions.

HushCycle is not a medical device and is not for contraception. It gives general information, not medical advice.