Terms of Use

Last updated: October 7, 2026

Please note: This app is for informational purposes only and does not provide medical advice or contraception.

1. Who we are and these Terms

These Terms of Use (the "Terms") are an agreement between you and Tarfion Ltd, Griva Digeni 59, Kaimakliotis Building, 5th Floor, 6043 Larnaca, Cyprus ("we", "us"), about your use of Ondiva (the "App").

By ticking the boxes on the consent screen and tapping "Agree and continue", you accept these Terms. If you do not agree, do not use the App.

How we handle your data is described in the Privacy Policy, which you can also find in the App under Settings → Privacy.

2. Not medical advice

The App estimates your next period, fertile window, ovulation and other phases from the dates and symptoms you log. These are estimates. They can be wrong, especially when cycles are irregular or little has been logged.

• The App is not a medical device and does not diagnose, treat or prevent any condition.
• The App is not contraception. Do not use it to prevent pregnancy.
• Do not use the App to decide on treatment. Talk to a doctor or other qualified health professional about your health. In an emergency, call your local emergency number.

3. Who can use the App

You must be at least 13 years old to use the App. Where the law of your country requires a parent's or guardian's consent at your age, use the App only with their agreement.

4. Your data and your device

What you log stays on your device. We do not keep a copy and cannot restore it. If you delete the App, reset or lose your device, or tap Delete all data, your logs are gone, unless your device's own backup kept them.

You are responsible for who can open your device. We recommend a passcode, Face ID or fingerprint lock.

You can withdraw your health-data consent in Settings → Privacy at any time. The App then stops using your logs until you agree again.

5. Optional account

You do not need an account. If you choose to sign in with Apple or Google, the account is used only to sign you in; it does not upload your logs. You can delete the account in Settings at any time.

6. Premium, subscriptions and purchases

Some features are part of Premium. Premium is sold as an auto-renewable subscription or as a one-time purchase through the Apple App Store or Google Play, and the store's terms apply to the payment.

• Billing. Payment is charged to your store account when you confirm the purchase. Prices are shown in the App before you buy.
• Automatic renewal. A subscription renews automatically for the same period at the price shown, unless you cancel it at least 24 hours before the current period ends. Your account is charged for the renewal within 24 hours before the period ends.
• Free trial. If a free trial is offered, it turns into a paid subscription at its end unless you cancel at least 24 hours before it ends. Any unused part of a trial ends when you buy a subscription.
• Canceling. Manage or cancel a subscription in your App Store or Google Play account settings. Deleting the App or your account does not cancel a subscription.
• Refunds. Refunds are handled by the store under its own rules. We cannot issue refunds for purchases made through the store.
• Restore. You can restore a purchase on a new device with Restore purchases on the paywall or in Settings.
• Price changes. We may change prices. A change to a subscription price applies only after the store notifies you as its rules require.

7. Using the App

We give you a personal, non-exclusive, non-transferable, revocable license to use the App on devices you own or control, for your own non-commercial use.

You must not copy, modify, resell or redistribute the App, try to get at its source code except where the law allows it, or use it in a way that breaks the law or harms others.

The App, its design, text and graphics belong to us or our licensors.

8. Changes to the App and to these Terms

We may change, add or remove features. We will tell you in the App before a material change to these Terms takes effect. Where the change affects what you agree to, the App asks you to agree again before you continue.

9. Our responsibility

We work to keep the App accurate and available, but it is provided "as is" and "as available". We do not promise that it is free of errors or that predictions are correct.

To the extent the law allows, we are not liable for indirect or consequential loss, or for decisions you make based on the App's estimates. Nothing in these Terms limits liability that cannot be limited by law, or takes away rights you have as a consumer in your country.

10. Ending the agreement

You can stop using the App at any time and delete your data in Settings. We may suspend or end your use of the App if you break these Terms.

11. Apple App Store terms

If you got the App from the Apple App Store:

• These Terms are between you and us, not Apple. Apple is not responsible for the App or its content.
• Apple has no obligation to provide maintenance or support for the App.
• If the App fails to meet a warranty that applies, you may tell Apple, and Apple will refund the purchase price, if any. Apple has no other warranty obligation for the App.
• Apple is not responsible for claims about the App, including product liability claims, claims that the App fails to meet a legal requirement, and consumer protection or privacy claims.
• Apple is not responsible for investigating or settling a claim that the App infringes someone's intellectual property.
• You confirm that you are not in a country under a US government embargo and are not on a US government list of prohibited or restricted parties.
• Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

12. Law and disputes

These Terms are governed by the laws of the Republic of Cyprus. If you are a consumer, you also keep the protection of the mandatory laws of the country where you live, and you may bring a claim in its courts.

13. Contact

Questions about these Terms: [email protected].