sCycle - Period Tracker

Most period tracker apps want your cycle data. sCycle is built so nobody - including us - ever sees it.

sCycle is a private period tracker and menstrual calendar that keeps everything in an encrypted database on your phone. There's no email field when you open the app, and no account to create. Your cycle data never has to leave the device.

ON-DEVICE PERIOD & OVULATION PREDICTIONS
sCycle predicts your next period, your ovulation day, and your fertile window - all worked out right on your phone. No cloud, no machine-learning servers. The more you log, the sharper your period predictions get.

LOG YOUR CYCLE, YOUR WAY
Track flow, pain, mood, and symptoms with a tap, and add a note for anything else. Choose from fifteen symptoms - cramps, bloating, headaches, fatigue, cravings and more. Nothing is ever required. The color-coded menstrual calendar shows your period days, fertile window, and what's predicted next at a glance.

PRIVATE BY DESIGN
Your cycle data is stored in an encrypted database (SQLCipher) on your device. Add an optional biometric app-lock for a second layer. sCycle works fully offline - no account, no ads, no data sales, no third-party trackers, and no "share your cycle for research" prompts.

MAKE IT YOURS
Three visual styles - Minimalist, Dark Modern, or the classic look - with full dark mode throughout for comfortable tracking day or night.

SYNC ACROSS YOUR DEVICES (OPTIONAL)
sCycle works completely offline, forever. If you ever want your cycle log on more than one device, Sapplify Sync is an optional, separate subscription you switch on yourself. It copies your encrypted log to your own devices and nowhere else - off until you turn it on.

EXPORT OR DELETE ANYTIME
One tap exports your full history to CSV - for your own records or to bring to your doctor. A couple more taps wipe everything for good. Your data, your call.

ONE-TIME PRO, NO SUBSCRIPTION
The core period tracker is free. sCycle Pro is a single purchase - no subscription - that unlocks unlimited cycle history, CSV export, and deeper insights. Try Pro free for 7 days before you decide.

FEATURES
- Period, ovulation, and fertile-window predictions
- One-tap flow, pain, mood, and symptom tracking
- Fifteen symptoms plus free-form notes
- Color-coded menstrual calendar
- Encrypted on-device database (SQLCipher)
- Optional biometric app-lock
- Works fully offline, no account required
- Three visual styles with full dark mode
- CSV export and import
- Optional Sapplify Sync across your devices
- One-time Pro unlock, no subscription

Your cycle. Your phone. Yours.