Privacy Policy for the "BrewLog" App

Last updated: October 29, 2026

This document sets out the rules for processing personal data by MatCode Mateusz Arczyński (ul. Portowa 10, 86-200 Chełmno, Poland, NIP 875-156-25-99, REGON 383604557, e-mail: matcode.help@gmail.com) - hereinafter referred to as the "Administrator". This document has been prepared in accordance with Regulation (EU) 2016/679 ("GDPR").

1. Glossary

User - a natural person installing or using the "BrewLog" mobile application (hereinafter: "App").

Service - functionalities of the App, including coffee brewing timer, tasting journal, dose/ratio calculator, recipe management, and bean tracking.

2. Scope and purposes of data processing

• Analytical and diagnostic data (in-app events, device ID) - purpose: improving the app, stability, and usage analysis; basis: Art. 6(1)(f) (legitimate interest of the Administrator).
• Advertising identifiers (e.g. GAID on Android, IDFA on iOS) - purpose: displaying ads and measuring ad performance via Google AdMob; basis: Art. 6(1)(a) (User's consent obtained through UMP consent dialog / App Tracking Transparency).
• User-entered content (brew logs, sensory notes, custom recipes, bean parameters) - stored exclusively locally on the User's device and not transmitted to the Administrator's servers.

3. Data recipients

The App uses third-party services:

• Google Play Services / Apple App Store Services (platform & operating system services)
• Google AdMob & Google User Messaging Platform (UMP) (ad serving and privacy consent management)

These providers may process data in the USA or other countries outside the EEA. The transfer is based on Standard Contractual Clauses (SCC) and additional safeguards.

4. Retention period

• Technical and diagnostic logs - up to 24 months.
• Advertising identifiers - until consent is withdrawn or the identifier is reset by the User in device settings or within the App's privacy settings.
• Local App data (recipes, brew journals) - until the App is uninstalled or data is cleared by the User.

5. User rights

You have the right to access your data, rectify it, erase it, restrict processing, data portability, object to processing (particularly when based on legitimate interest), and withdraw consent at any time (without affecting the lawfulness of processing based on consent before its withdrawal). Direct requests to matcode.help@gmail.com. You also have the right to lodge a complaint with the President of the Personal Data Protection Office (UODO) or your local supervisory authority.

6. Tracking mechanisms / device identifiers

The App does not use traditional browser cookies; however, integrated SDKs (Google Mobile Ads) may use device identifiers or advertising identifiers (GAID on Android, IDFA on iOS) for ad serving and analytics purposes. You can manage or reset advertising identifiers in your device settings or via the privacy options (UMP) available within the App.

7. Data security

We implement appropriate technical and organizational measures to protect your personal data, including encrypted communications (TLS). Local data is stored securely within the device operating system sandbox.

8. Children's privacy

The Service is not intended for individuals under 13 years of age (or the minimum age required in your country to consent to data processing). We do not knowingly collect personal information from children under this age. If we learn that a child under the required age has provided personal data without parental consent, we will promptly delete it. If you believe a child has provided us with personal information, please contact us at matcode.help@gmail.com.

9. Policy changes

We may periodically update this Privacy Policy. New versions will be published in the App and on the website at https://gympad-282d8.web.app/brewlog/policy-en.html. We recommend checking this page regularly. For significant changes that may affect your rights, we will notify you through appropriate channels (e.g. in-app notice). The last update date at the top indicates when the policy was revised.

10. Contact

If you have questions regarding this Privacy Policy or data processing, please contact us by email at matcode.help@gmail.com or by mail at the Administrator's registered address stated above.