Auralune: Period & Cycle

Auralune is a period and cycle tracker built for people who do not want their cycle data living on someone else's server.

We have no backend. We do not run analytics. We do not embed advertising SDKs. We do not share, sell or relay your data, because we do not have it.

ZERO DATA SHARING — BY DESIGN • All entries are stored on this iPhone only, inside the system's Data Protection Complete container. • Sensitive fields — your notes, sexual-activity entries, medication names — are additionally encrypted at rest with Apple's CryptoKit, using a master key derived from your PIN. • If you turn on optional iCloud sync, your data is encrypted on this device with a key that never leaves your devices, then stored in your private iCloud. Apple sees ciphertext only. We see nothing.

FREE TIER • Log period start, end and flow. • 1 month of history. • Basic next-period prediction. • App Lock with PIN and Face ID.

PRO • Unlimited history and predictions. • 30+ symptoms · BBT · cervical mucus · LH tests. • Apple Watch complication for quick logging. • Lock-Screen widget. • Two-way Apple Health sync (you decide what we read/write). • Monthly PDF report generated on device — share with a clinician, or with no one. • Duress PIN — a second 6-digit PIN that opens Auralune to a decoy calendar while your real data stays encrypted and hidden. • 6 themes.

PRO+ Everything in Pro, plus: • End-to-end-encrypted iCloud sync across your devices. • Interactive widget for one-tap logging (iOS 17+). • Trying-to-conceive, pregnancy, postpartum and perimenopause modes — with no judgment language and no reasons required when you switch. • Import your history from Flo, Clue and Apple Health. • Advanced anomaly detection. • Transparent-report archive.

ON-DEVICE PREDICTIONS Auralune learns from your last six cycles and weights recent cycles higher. The fertile window is computed from your luteal-phase length and BBT shifts (≥ 0.3 °C sustained for 3+ days). Predictions are estimates based on your own data — Auralune is not a medical device and not a contraceptive.

SECURITY AND CONTROL • App Lock with PIN + Face ID / Touch ID. • Optional auto-burn after 5 wrong PINs. • Optional "blur preview in App Switcher". • One-tap "Burn all data" — overwrites the local store, deletes your iCloud zone if sync is on, removes every encryption key from the Keychain.

LANGUAGES English, 简体中文, 日本語, Español. More on the way.

SUBSCRIPTIONS • Pro Monthly — $2.99 / month · 7-day free trial. • Pro Annual — $19.99 / year · 7-day free trial. • Pro+ Monthly — $4.99 / month · 14-day free trial. • Pro+ Annual — $34.99 / year · 14-day free trial. All subscriptions auto-renew until cancelled. Manage or cancel in Settings → Apple ID → Subscriptions.

WHY WE BUILT THIS In 2026 the FTC announced a $59.5M class-action settlement against Flo Health over sharing period data with Facebook, Google and Flurry. We think you deserve a tracker that simply does not have your data. Auralune is that tracker.

Privacy policy: https://leexuanxuan95-dev.github.io/auralune/privacy.html EULA: https://leexuanxuan95-dev.github.io/auralune/eula.html Support: https://leexuanxuan95-dev.github.io/auralune/support.html