How do I log or correct a period?
Tap the large forecast area or Log period. In the calendar, tap each date you want to select; tap a selected date again to remove it. Choose Save changes when finished. Existing logged dates are never replaced merely because predictions recalculate.
What are learned predictions?
Cylune calculates a period length and rhythm from the dates you confirm, entirely on your device. You can use those learned values or switch to your own period-length and rhythm settings. Learning continues locally either way.
Why did Cylune add estimated dates?
If a period is missed or only its first day is entered, Cylune may add clearly identified, editable estimates using the active prediction settings. These are not confirmed health records and can be changed or dismissed.
Does Cylune diagnose fertility or pregnancy?
No. Fertility and pregnancy-likelihood labels are calendar estimates only and may be wrong. Cylune is not contraception, a pregnancy test, medical advice, or a diagnostic tool.
Where is my information?
Inside Cylune’s private application storage on your device. There is no Cylune account, cloud synchronization, analytics system, or developer-accessible copy.
Report a bug or contact support
Start with a short, non-sensitive description of what happened. Include the Cylune version and build number, device model, operating-system version, which view or calendar screen was open, what you expected, and what happened instead. If the issue is repeatable, list the smallest sequence of taps or swipes that reproduces it.
- Facebook Page: @CyluneApp
- The public developer contact address shown on Cylune’s official store listing.
Helpful technical details
- Cylune version and build number;
- Android or iOS version and device model;
- Simple or Extended view and the screen involved;
- exact reproduction steps and whether it happens every time; and
- a privacy-safe screenshot only when necessary, with personal information removed.