SafeCycle: Period Tracker

No subscription. Ever. A single one-time purchase unlocks everything for life. Your data never leaves your iPhone — AES-256 encrypted, zero-knowledge.

SafeCycle is the period tracker for people who refuse to trade their privacy for predictions — and refuse to rent an app forever.

Everything stays on your iPhone, encrypted with AES-256-GCM. Zero-knowledge: no account, no server, no cloud. We cannot read your data. We cannot sell it. Nobody can.

NO SUBSCRIPTION — EVER • SafeCycle is free to use • One optional one-time purchase unlocks everything, for life • Less than one year of a typical tracker subscription — yours forever

PRIVACY BY ARCHITECTURE • AES-256-GCM encryption, keys stored in the Apple Keychain • No account, no server, no tracking, no ads • Export or erase your data anytime — it is yours

BUILT FOR REAL BODIES • Simple mode: period dates and flow, nothing more • Advanced mode: symptoms, mood, medications, free notes • Support for irregular cycles, PCOS, endometriosis, contraception • Partner mode: shared predictions without raw data

INTELLIGENCE THAT STAYS HOME • Cycle and ovulation predictions computed on your device • Optional narrative insights — anonymized, aggregates only • Local reminders, never external push notifications

MEDICALLY GROUNDED • Health content cites recognized sources: ACOG, NHS, WHO, Mayo Clinic • Predictions are informational, not a contraceptive method

CRAFTED FOR iOS • Liquid Glass interface designed for iOS 26 • Dark mode, Dynamic Type, full accessibility • Available in 7 languages

Your cycle. Your data. Your rules. Download SafeCycle and own your tracker — once.