Ondelle: Cycle Tracker

Ondelle is a calm, beautiful way to understand your cycle — and it keeps your most personal information exactly where it belongs: on your own phone.

Whether you're getting to know your body, trying to conceive, navigating pregnancy, or simply want fewer surprises, Ondelle turns your daily logs into gentle, useful insight.

PRIVATE BY DESIGN
Your cycle, symptoms, and notes are stored on your device — not on our servers. No account required, nothing uploaded, nothing sold. Your body's data stays yours.

KNOW WHAT'S COMING
- Period and cycle predictions on a beautiful interactive dial
- Fertile window and ovulation estimates
- A clear month-at-a-glance calendar
- Gentle reminders so nothing catches you off guard

LOG IN SECONDS
- Flow, symptoms, and moods with a tap
- Track patterns over time
- Bring in your past periods for accurate predictions faster

GUIDANCE THAT HELPS
- What's happening in your body each day
- Comfort tips and foods for cramps, bloating, and low-energy days
- Basal body temperature charting and ovulation-test logging
- Pregnancy mode with week-by-week guidance

YOURS ALONE
- An optional passcode keeps Ondelle for your eyes only
- Backups you create and control
- Calming night and light themes

A NOTE ON CARE
Ondelle is a wellness and education tool, not a medical device, and is not a form of contraception. Predictions are estimates. Always talk to a qualified healthcare professional for medical questions.

Made with care by SKJ Enterprises LLC.