Terms of use

Last updated: September 28, 2026

By using Caffculator, you agree to these terms. Please read them carefully.

1. The service

Caffculator is an app that lets you log caffeine and water, see a personal daily caffeine limit and get estimates of the caffeine in your body. It is developed and operated by Öncü Hazar Gürgün as an individual developer.

2. Not medical advice

All calculations in Caffculator are estimates based on general guidance (such as EFSA) and average values. People process caffeine differently. Caffculator does not provide medical advice, diagnosis or treatment and is not a substitute for a healthcare professional. If you have a health condition, are pregnant or breastfeeding, or take medication, talk to your doctor about your caffeine intake. Decisions you make based on the app are your own responsibility.

3. Who can use it

You must be at least 13 years old to use Caffculator. Users under 18 get a lower daily limit and aren't asked pregnancy questions.

4. Your account

You can use the app without creating an account. Your data is then linked to an anonymous ID. If you reinstall the app on the same device, your anonymous account usually comes back; if you reset or change your device, you may lose access to this data. To keep your data safe, you can connect Apple, Google or your email. You are responsible for keeping access to your account secure and for not sharing sign-in links with anyone.

5. Acceptable use

You agree to use the app lawfully and not to disrupt the app or its servers, bypass security measures, reverse engineer it or abuse it with automated tools.

6. Fees

Caffculator is currently free. The features that are free today (logging, your personal limit, the “What if I drink now?” simulator, custom drinks and reports) stay free. If optional paid features are added in the future, prices and terms will be shown clearly before purchase, and purchases will be made through the App Store or Google Play.

7. Intellectual property

Caffculator's name, logo, design, text and software belong to Öncü Hazar Gürgün. You receive a limited, non-transferable license to use the app for personal, non-commercial purposes. The logs and custom drinks you enter belong to you.

8. Changes to and end of the service

We may improve the app and add or remove features. If we ever need to shut the service down, we'll give reasonable notice and a way to export your data. You can delete your account in the app at any time.

9. Limitation of liability

Caffculator is provided "as is". We don't guarantee that calculations will be accurate in every case or that the service will be uninterrupted or error-free. To the extent permitted by law, we are not liable for indirect damages arising from your use of the app. Your statutory consumer rights are not affected.

10. Apple-specific terms

These terms are between you and Caffculator only, not Apple. Apple is not responsible for the app's maintenance, support or content. Apple and its subsidiaries are third-party beneficiaries of these terms. Where these terms are silent, Apple's Standard Licensed Application End User License Agreement (EULA) applies.

11. Governing law

These terms are governed by the laws of the Republic of Türkiye. Your rights under the consumer protection laws of your country of residence are not affected.

12. Changes

If we update these terms, we'll change the date on this page and announce significant changes in the app.

13. Contact

support@caffculator.com