Kalena

Kalena is a privacy-first period tracker built around a single rule: your health data never leaves your phone. No account. No analytics. No ads.

Most period apps are surveillance products dressed in pink. Kalena has no backend or database to breach, no server and no third-parties tracking your cycle. Your data lives in a local database on your device.

WHAT YOU CAN TRACK

• Periods with flow intensity and notes
• Symptoms across 9 categories (cramps, mood, bloating, fatigue, and more) with a severity scale
• Cycle dates with full calendar history
• Optional Basal Body Temperature (premium)

WHAT YOU GET TO SEE

• Current cycle phase: menstruation, follicular, ovulation window, or PMS
• Predicted next period and fertile window
• Days until next period and pregnancy probability
• Cycle insights and personal patterns

PRIVACY BY DESIGN

• All data stored locally in SQLite on your device
• Zero network requests during normal use
• No account required, just open the app and start tracking
• Optional biometric lock for an extra layer of privacy
• Full GDPR compliance: export your data anytime, delete it instantly

PREMIUM No subscription. Unlock advanced features once, keep them forever:

• Smart Predictions: confidence-scored next-period estimates using your full cycle history
• Advanced Analytics: regularity score, cycle and period charts, symptom patterns
• BBT Tracking with ovulation detection
• Health Report PDF to share with your GP if you choose to

WHO IT'S FOR

• Anyone tired of period apps that sell their data
• People who want simple cycle tracking without 14 popups about consent
• Those tracking fertility (TTC) who need accurate predictions
• Privacy-conscious users
• Perimenopausal users who need irregular cycle support

NOT A MEDICAL DEVICE Kalena is a tracking and informational tool. It is not a contraceptive method and should not be used to diagnose any medical condition. Always consult a healthcare professional for medical advice.