Today
See cycle day, days to ovulation or period, and a full-width Log today button. Ask is on-device templates.
Help
How to use LunaLoop.
Start on Today. Log how you feel. Use Calendar for dates, Insights for trends, and Learn for two-minute reads.
Calendar
Solid pink for period, dashed for predicted, teal for fertile days, a ring on ovulation. Tap a day to log.
Insights
Averages from complete cycles. Confidence is Low, Building, or Steady — never “accurate.”
Learn
Short articles on periods, hormones, fertility, and care. Educational — not a prescription.
Profile
Cycle length, goals, export, and delete. Your logs stay on this device in this version.
Predictions
They use the period start dates you log and the typical length you share. They remain estimates.
If you feel unwell
LunaLoop is not emergency care. If you have red-flag symptoms — fainting, very heavy bleeding, severe pain, pregnancy concern, or anything that feels wrong — contact a clinician or emergency services. Do not wait on an app.
Get LunaLoop on your phone
Same screens as iOS and Android. Sample cycle in the browser if you want a look first.