Feature · Privacy
A private period tracker you can trust
Cycle data is some of the most personal information there is. Ovulyx is designed so that you decide who sees what, and so that your health data is never used for advertising.
In short
- No selling of data and no analytics trackers.
- Health data is never used for advertising.
- Stored in Western Europe and processed under the GDPR.
- Export your data or delete your account any time.
Private by default
Sharing with a partner starts switched off. Only what you choose to share becomes visible, and private notes always stay private, even when you share more.
Why privacy matters so much for cycle data
A cycle log can reveal more than it seems: whether someone is trying to conceive, whether a pregnancy may be possible, how someone's health is changing. Information like that deserves the same care as any medical record.
That is why Ovulyx keeps sharing opt-in, keeps the circle small and gives you a preview of what others see. The less that leaves your phone and your account without your say-so, the less can go wrong.

What Ovulyx does not do
- It does not sell your data
- It does not use analytics trackers
- It does not use health data for advertising; if ads are ever shown, they are non-personalized
Where your data lives
Data is stored in Western Europe and processed under the GDPR. The operator is an Austrian sole trader, and the legal notice and privacy policy on this website describe the details.
What this looks like in practice
- You decide, per person, which phase information and feelings are visible
- Each entry in the phase lists can be hidden individually
- The Partner tab previews exactly what the other person sees
- Sharing can be stopped at any time in the profile
Your rights, in the app
- Export your data any time
- Delete your account and your data in the app or through the deletion page on this website
- Stop sharing with a person whenever you like
A few honest limits
No app can promise absolute security, and the people you share with can see what you share with them. If you are in a situation where a partner might misuse information, share carefully or not at all.
Good practice
Use a strong, unique password for your account and review your sharing settings every few months.
Frequently asked questions
Does Ovulyx sell my data?
No. Ovulyx does not sell data and does not use analytics trackers.
Where is my data stored?
In Western Europe. It is processed under the GDPR.
Can I delete everything?
Yes. You can delete your account and data in the app or via the deletion page on this website.
Who can see my entries?
Only you, plus the people you choose to share with, and only what you allow.
Is the web app as private as the Android app?
It is the same account with the same rules: the same sharing settings, the same export and deletion options.
Does Ovulyx show ads?
Health data is never used for advertising. If ads are shown at all, they are non-personalized.
This page summarises how Ovulyx handles data. The privacy policy is the binding description.