We're here to help
Questions, feedback, or a bug to report? We read everything.
Contact us
Email skjenterprisesllc2025@gmail.com and we'll get back to you as soon as we can — usually within 1–2 business days.
Is my data really private?
Yes. Everything you log in Ondelle is stored on your own device. We don't run servers that collect your health data, we never sell your information, and your cycle data is never used for advertising. See our Privacy Policy for the full details.
How do I back up my data?
Open Ondelle's Settings and choose Backup. You'll get a backup you control — save it anywhere you like, and restore it on a new phone in one step.
How accurate are the predictions?
Ondelle learns from the periods you log — the more cycles you track, the better it gets. Predictions are estimates, not guarantees, and Ondelle is not a form of contraception or a medical device.
How do I delete my data?
Settings → Erase all my data removes everything instantly. Deleting the app does the same.