Privacy Policy

Last updated: 3 October 2026

This privacy policy explains how personal data is processed when you use the Android app Schiri Tools (app ID: de.luckyworks.refereetools, the “app”) and this website. This is a translation of the German original; in case of doubt, the German version prevails.

1. Controller

2. General information about the app

Using the app requires no registration; there are no user accounts. The current match, including team names, match time, goals and cards, as well as your settings are stored locally on your device only. This data is never transmitted to us and is removed when you uninstall the app or clear its data. Whistle, cards, coin toss and match score work without an internet connection.

The app is funded by advertising and offers crash reporting and usage statistics that you can enable voluntarily. The Google services involved are described in the following sections.

3. Consent management (Google UMP)

The app uses the Google User Messaging Platform (UMP) to determine whether a consent request for advertising is required, to store your consent status and, where applicable, to display a consent form. The provider is Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland (“Google”).

This may involve processing your IP address, device information, app identifier, consent decisions and technical diagnostic information. Accessing or storing information on your device and the subsequent processing are based, where required, on your consent under Section 25(1) TDDDG and Art. 6(1)(a) GDPR. Where consent is not legally required, processing takes place only to the extent permitted by law.

4. Advertising (Google AdMob)

The app shows banner ads via Google AdMob on the “Whistle” and “Coin toss” screens. No ads are shown during a running match. Ad requests are only made once UMP permits them according to the stored consent status.

Depending on your consent, your device settings and the ads Google serves, the following data may be processed, among others:

• IP address and the approximate region derived from it,
• advertising ID and other device or app identifiers,
• device, operating system and app information,
• interactions with ads and with the app, and
• diagnostic, performance and fraud-prevention data.

This processing serves to deliver and measure advertising, to personalize it where applicable, and for fraud prevention, security and technical delivery. Where consent is required, it is based on Section 25(1) TDDDG and Art. 6(1)(a) GDPR. You may withdraw consent at any time with effect for the future. Where Google offers a renewed choice for your device, the app settings provide the “Manage privacy options” button under “Ad privacy”.

For more information, see the privacy information for the Google Mobile Ads SDK, the Google Privacy Policy and Google Business Data Responsibility.

5. Voluntary crash reports (Firebase Crashlytics)

The app uses Firebase Crashlytics by Google to detect and fix errors and crashes. Collection is disabled by default and is only enabled once you explicitly agree in the consent dialog. You can withdraw this decision at any time in the app settings under “Send crash reports”.

When collection is enabled, the data transmitted to Google may include your device type, operating system, app version, the time and technical state of the app at the moment of the crash, stack traces, diagnostic information and a Firebase installation ID. We use this information solely for stability analysis and troubleshooting. The legal basis is your consent under Art. 6(1)(a) GDPR. Under Firebase's rules, crash reports are generally stored for up to 90 days.

For more information, see the Firebase privacy information.

6. Voluntary usage statistics (Firebase Analytics)

The app uses Firebase Analytics by Google (the app client of Google Analytics 4) to understand how the app is actually used, for example which tools are opened and how often a match is followed through to the end. Collection is disabled by default and is only enabled once you explicitly agree in the consent dialog. This decision is independent of your consent to crash reports and can be withdrawn at any time in the app settings under “Send usage statistics”.

When collection is enabled, the app transmits the following events with purely usage-related information:

• opening a tool (tool_open): whistle, cards, coin toss or match score,
• using the whistle (whistle_used): number of whistles per mode (press and hold, continuous, shake),
• match start (match_start): planned match length and whether custom team names were entered (yes/no, never the names themselves),
• restoring a running match (match_restored): whether the clock kept running or was paused after a device restart,
• match end (match_finish): planned and played minutes, whether the planned time was reached, number of goals, cards and corrected entries,
• sharing a result (result_share), without the shared content.

In addition, Google Analytics automatically collects information such as a pseudonymous app instance ID, device and operating system type, app version, language and an approximate region derived from your IP address.

No team or player names, email addresses, account data or other free-text entries are transmitted; the app has no user accounts. The data is evaluated in aggregate only, to improve the app. The legal basis is your consent under Art. 6(1)(a) GDPR and, where information is stored on or read from your device, Section 25(1) TDDDG. The retention period follows the settings of the Google Analytics property.

For more information, see the Firebase privacy information.

7. Sharing results

After a match you can send the result as text to an app of your choice using the Android share function. The text is only handed over to that app when you choose to do so; we do not receive it. The chosen app is responsible for any further processing.

8. Data transfers by Google services

With UMP, AdMob and Firebase, processing by Google LLC and further processors outside the European Economic Area, in particular in the USA, is possible. Google LLC is certified under the EU-US Data Privacy Framework. Where necessary, Google additionally relies on appropriate safeguards such as EU standard contractual clauses. The specific retention period for advertising and consent data depends on the purpose, account settings and Google's deletion rules.

9. Google Play

The app is distributed through the Google Play Store. Downloads, installation, updates and payments are processed by Google under its own responsibility.

• Google Privacy Policy

10. Hosting of this website on GitHub Pages

This website is provided as a GitHub Pages site by GitHub, Inc., 88 Colin P Kelly Jr Street, San Francisco, CA 94107, USA. When you access it, GitHub processes technically necessary connection data, in particular your IP address, the time of access, the file requested, the amount of data transferred and browser and operating system information. This processing serves the secure and reliable delivery of the website and is based on Art. 6(1)(f) GDPR. Our legitimate interest lies in publishing the information about the app that is required by law and by contract.

For more information, see the GitHub privacy statement. This website itself sets no analytics or marketing cookies.

11. Your rights

Subject to the legal requirements, you have in particular the right to:

• access to the data processed (Art. 15 GDPR),
• rectification of inaccurate data (Art. 16 GDPR),
• erasure (Art. 17 GDPR),
• restriction of processing (Art. 18 GDPR),
• data portability (Art. 20 GDPR),
• object to processing based on Art. 6(1)(e) or (f) GDPR (Art. 21 GDPR), and
• withdraw consent at any time with effect for the future (Art. 7(3) GDPR).

To exercise your rights, an email to schiri-tools@riedhammer.eu is sufficient. You also have the right to lodge a complaint with a data protection supervisory authority (Art. 77 GDPR).

12. Changes to this privacy policy

We update this privacy policy when features, the services used or legal requirements change. The current version is always available at this address.