Lunavi: Offline Period Tracker

Your health data is yours. Not a server's. Not an advertiser's. Yours.
Lunavi is a fully offline period and fertility tracker built for women who don't hand over their most intimate health data in exchange for features. Every log, every reading, every symptom — stored locally on your device. Nothing transmitted. Nothing at risk.
No cloud. No account. No compromise.

🔒 100% OFFLINE & PRIVATE — ZERO DATA COLLECTION
Most period trackers treat privacy as a setting. Lunavi treats it as an architectural fact.
There is no server to breach. No database to subpoena. No company that can access your data — because it was never sent anywhere.

● 100% offline: Predictions, logs, and insights generated entirely on-device. No internet connection required — ever.
● No account: Open the app. Start tracking. No email, no sign-up.
● Advanced App Lock: PIN or biometric lock with an offline reset token, hint system, and emergency panic data wipe — a one-tap option to permanently delete all records.
● Discreet Mode: Hide sensitive health information from your screen in public spaces.
● Reminders & Quiet Hours: Period and ovulation notifications with full mute control during hours you set.
● Data Portability: Export and import your local database anytime. Your records, your terms.

🌙 CYCLE TRACKING THAT LEARNS YOUR RHYTHM
Lunavi's on-device prediction engine adapts to your unique cycle over time — no internet, no data leaving your phone.

● Three modes: Standard Cycle Mode, TTC Mode for women trying to conceive, and Simple Mode for straightforward period logging.
● Accurate predictions: Pinpoint your next period, fertile window, and ovulation day — based on your actual history, not a generic 28-day assumption.
● Irregular cycle support: Built specifically for unpredictable patterns. The engine recalibrates with every logged cycle.
● Retroactive logging: Missed a day? Log it without corrupting your history.

🌸 TRYING TO CONCEIVE (TTC) MODE
Timing is everything. Lunavi's TTC Mode tracks every fertility indicator — privately, offline, no subscription.

● Fertile window identification with daily probability guidance
● Basal Body Temperature (BBT) charting with full cycle overlay
● Cervical mucus tracking with quality classification
● Ovulation Predictor Kit (OPK) logging to detect your LH surge and confirm ovulation timing
● Cycle phase insights aligned to your conception journey

Everything runs on-device. Your fertility data stays private.

📝 PERIOD & SYMPTOM LOGGING — FULLY CUSTOMIZABLE
Your body doesn't fit a template. Your tracker shouldn't either.

● 40+ symptoms and vitals — flow intensity, sleep, energy, pain, mood, skin, digestion, and more.
● Mood and emotion logging — understand how you feel across your full cycle.
● Customizable dashboard — reorder, hide, or prioritize every section.
● Flexible entries — log what matters today, skip what doesn't.

📊 PERIOD & CYCLE ANALYTICS
Patterns only become visible when you have enough data to see them.

● Cycle length timeline: Track how your cycles shift month by month — a useful reference for conversations with your healthcare provider.
● Symptom heatmaps: Identify which symptoms recur at which cycle phase — across months, not just days.
● Phase coaching: In-app guidance covers each phase — follicular, ovulatory, luteal, and menstrual — helping you connect your experience to your biology.

🎨 AN INTERFACE WORTH OPENING EVERY DAY
Tracking is only valuable if the habit sticks.

● Premium UI with frosted-glass aesthetics and fluid animations — modular and personal, not clinical.
● 5 themes: Luna Rose, Midnight, Forest, Ocean, and High Contrast with full Day/Night modes.
● No ads. No upsells. No pink stereotypes.

PERIOD TRACKING THAT STAYS WHERE IT BELONGS — WITH YOU.
Period tracking, menstrual cycle tracking, ovulation prediction, fertility awareness, BBT charting, symptom logging — all of it, private, offline, and yours.
Download Lunavi. Your cycle data belongs on your phone — and nowhere else.