selene

Why Do Your Menstrual Cycles Feel Unpredictable?

Tracking your period with generic apps often leads to frustration: inaccurate predictions, confusing data, and a lack of actionable insights. selene by Yahoo Japan Corp. solves this by providing a scientifically grounded, data-rich platform designed specifically for women who demand precision. Instead of guessing when your next cycle will start or why your mood fluctuates, selene logs every symptom, flow intensity, and ovulation sign into a structured timeline. You gain a clear, visual map of your reproductive health—no vague estimations, only evidence-based forecasting.

Core Tracking & Health Tools

selene offers a complete suite for cycle management, fertility awareness, and symptom monitoring. The app’s engine analyzes historical patterns to adjust predictions in real time. Key capabilities include:

• Cycle Logging & Prediction Engine – Record start/end dates, flow volume, and pain levels. The algorithm recalibrates predictions after each logged entry, accounting for irregularities typical in PCOS, thyroid conditions, or stress-induced shifts.
• Symptom & Mood Tracker – Tag over 50 predefined symptoms (cramps, bloating, headaches) and mood states (anxiety, irritability, calm). Each entry attaches to a timestamp, enabling correlation analysis between cycle phases and physical/emotional changes.
• Fertility Window Calculator – Input basal body temperature, cervical mucus consistency, and ovulation test results. selene identifies your 5–6 most fertile days with a 95% confidence interval, displayed as a color-coded calendar overlay.
• Health Notes & Medication Log – Attach custom notes to any day (e.g., “missed birth control pill,” “started vitamin D supplement”). For medication users, the app tracks dosage timings and reminds you before the next dose.

Key Advantages for Daily Use

• Japan-Engineered Precision – Based on Yahoo Japan’s data modeling, predictions improve with each cycle—no resetting required after irregular months.
• Battery & Data Efficiency – Works offline for all core functions. Syncs to cloud only when manually triggered. No background location or sensor drain.

• Clean, Uncluttered Interface – No ads. No social feeds. Every screen prioritizes your health data: a single tap logs a symptom, two taps adjust a prediction.

• Export & Share – Generate a PDF report of your last 6 cycles (including notes and symptom graphs) for your gynecologist or fertility specialist.

Download Mobile App Now

Start tracking with professional-grade accuracy today. Limited offer: First 1,000 users receive lifetime access to advanced prediction analytics—normally a $4.99/month feature. Activate exclusive access by installing now. This offer expires in 48 hours.

Disclaimer: This app requires an active internet connection for cloud backup and PDF export. In-app purchases are available for premium prediction models (no purchase necessary for basic cycle tracking). Age restriction: 13+ due to fertility-related content. Data usage varies by feature; continuous background synchronization may increase cellular data consumption. Always consult a healthcare provider for medical decisions; selene is a tracking tool, not a diagnostic device.