Terms of Use

End User License Agreement · Calendar Girl: Period Tracker · Last updated 4 September 2026

This agreement is between you and Ivan Beschetnikov (“we”, “us”), the developer of Calendar Girl. By downloading or using the app you accept these terms. If you do not accept them, do not use the app.

Please read this first. Calendar Girl is not a medical device and not a method of contraception. Its predictions are estimates based on the dates you enter, and they can be wrong — especially with irregular cycles. Do not use the app to prevent or achieve pregnancy, and do not use it in place of advice from a doctor.

1. Licence

We grant you a personal, non-transferable, non-exclusive licence to use Calendar Girl on Apple-branded devices that you own or control, as permitted by the Usage Rules in the App Store Terms of Service. The licence covers use of the app; it does not transfer ownership of it.

2. What you may not do

3. Health disclaimer

Calendar Girl is intended for general wellness and personal record-keeping only. It does not diagnose, treat, cure or prevent any medical condition. Cycle, ovulation and fertile-window predictions are statistical estimates, not medical facts. Always consult a qualified healthcare professional about your health, contraception, fertility, pregnancy, or any symptom that concerns you. In an emergency, contact your local emergency service.

4. Subscriptions

Calendar Girl is free to use. An optional Calendar Girl PRO subscription removes advertising and unlocks detailed statistics.

5. Your data

What you record in the app is yours and stays on your device. How the app handles data is described in our Privacy Policy, which forms part of these terms. Keeping backups is your responsibility; we cannot recover data that is lost because a device was lost, reset or its app deleted.

6. Ownership

The app, its design, code, text and graphics belong to us and are protected by copyright and other laws. All rights not expressly granted here are reserved.

7. No warranty

The app is provided “as is” and “as available”, without warranties of any kind, whether express or implied, to the fullest extent the law allows. We do not warrant that the app will be uninterrupted, error-free, or that its predictions will be accurate. Some jurisdictions do not allow the exclusion of certain warranties, so parts of this section may not apply to you.

8. Limitation of liability

To the extent permitted by law, we are not liable for any indirect, incidental or consequential damages, or for any loss of data, arising out of your use of the app. Nothing here limits liability that cannot legally be limited, including liability for death or personal injury caused by negligence, or for fraud.

9. Termination

This licence lasts until terminated. It ends automatically if you break these terms, and you can end it at any time by deleting the app. Sections 3 and 5 to 8 survive termination.

10. Changes

We may update these terms; the date at the top of the page shows when they were last changed. Continuing to use the app after a change means you accept the new version.

11. Terms required by Apple

The following apply because the app is distributed through the App Store:

12. Contact

Developer: Ivan Beschetnikov. Questions, complaints and claims about the app can be sent to php701@gmail.com, and we answer by e-mail.