Privacy Policy
Last Updated: February 7, 2026
1. Introduction
This Privacy Policy describes how your personal information is collected, used, and shared when you use the Dartly application ("App"), available on Android, iOS, desktop, and web platforms.
Dartly is a darts scoring application developed by Fratres ("we", "us", or "our"), an informal development group based in the Czech Republic. On Apple platforms (iOS/iPadOS), the App is published by Osomahe o.s.
By using the App, you agree to the collection and use of information in accordance with this Privacy Policy. If you do not agree with this policy, please do not use the App.
2. Contact Information
Fratres
Email: fratresfun+dartly@gmail.com
For any questions or concerns regarding this Privacy Policy or your personal data, please contact us at the email address above.
3. Age Restrictions
Dartly is intended for users aged 13 and older. We do not knowingly collect personal information from children under the age of 13. If you are a parent or guardian and believe your child under 13 has provided us with personal data, please contact us at fratresfun+dartly@gmail.com, and we will take steps to delete such information.
In the European Economic Area (EEA), where local laws require a higher age of digital consent (up to 16 years in some Member States), users below the applicable age threshold should only use the App with the consent of a parent or legal guardian.
4. Information We Collect
4.1 Information You Provide
The App allows you to create player profiles and teams for the purpose of scorekeeping. This may include:
- Player names (first name, last name)
- Nicknames
- Team names
This information is entered voluntarily, is not verified by us, and can be fictional or pseudonymous. We do not require account registration, and we do not collect email addresses, phone numbers, physical addresses, or any other directly identifying personal information through the App.
4.2 Information Collected Automatically
When you use the App, certain information may be collected automatically through third-party services integrated into the App:
- Device information: device type, model, operating system and version, screen resolution, device language
- App usage data: features used, session duration, crash logs, performance data
- Advertising identifiers: such as Google Advertising ID (GAID) or Apple Identifier for Advertisers (IDFA), used to serve and measure advertisements
- Network information: IP address (which may be used to approximate general geographic location), connection type
- Analytics data: in-app events, navigation patterns, aggregated usage statistics
4.3 Information Stored Locally
All game-related data — including player profiles, team information, game sessions, game history, scores, throws, and statistics — is stored locally on your device using an on-device database. This data is not transmitted to our servers.
In the future, we may offer an optional cloud synchronization feature as part of a premium subscription. If introduced, this feature will require your explicit opt-in consent and will be described in an updated version of this Privacy Policy.
5. Third-Party Services
The App uses the following third-party services, each of which may collect information as described in their respective privacy policies:
5.1 Google Firebase
We use Firebase for analytics and crash reporting:
- Firebase Analytics — collects app usage data, session information, and device properties to help us understand how the App is used and to improve user experience.
- Firebase Crashlytics — collects crash reports, stack traces, and device state information to help us identify and fix technical issues.
Firebase Privacy Policy: https://firebase.google.com/support/privacy
5.2 Google AdMob
We use Google AdMob to display advertisements within the App. AdMob may collect and process data including device identifiers, IP addresses, and usage data to serve personalized or non-personalized ads.
Google AdMob Privacy Policy: https://policies.google.com/privacy
5.3 Google AdSense
We use Google AdSense for advertising on the web version of the App. AdSense may use cookies and similar technologies to serve ads based on your prior visits to our App or other websites.
Google AdSense Privacy Policy: https://policies.google.com/privacy
5.4 Google Analytics
We use Google Analytics to collect and analyze aggregated usage data for the web platform to improve the App experience.
Google Analytics Privacy Policy: https://policies.google.com/privacy
6. How We Use Your Information
We use the information collected for the following purposes:
- To provide and maintain the App: enabling core functionality such as game scoring, player management, and statistics tracking
- To improve the App: analyzing usage patterns, identifying bugs, and optimizing performance
- To serve advertisements: displaying ads within the App to support its free availability
- To ensure stability: monitoring crashes and technical issues to maintain a reliable experience
We do not use your information for:
- Selling personal data to third parties
- Creating individual user profiles for marketing purposes
- Sending unsolicited communications (we do not collect your email or contact information)
7. Legal Basis for Processing (EEA/UK Users)
If you are located in the European Economic Area (EEA) or the United Kingdom, we process your personal data based on the following legal grounds under the General Data Protection Regulation (GDPR):
- Legitimate interest (Art. 6(1)(f) GDPR) — Analytics and crash reporting to improve the App and ensure its stability
- Consent (Art. 6(1)(a) GDPR) — Serving personalized advertisements; use of non-essential cookies and tracking technologies
- Contract performance (Art. 6(1)(b) GDPR) — Providing the core functionality of the App
Where we rely on consent, you may withdraw it at any time through your device settings or the consent management options within the App. Withdrawal of consent does not affect the lawfulness of processing carried out prior to the withdrawal.
8. Advertising and Your Choices
8.1 Personalized Advertising
By default, our advertising partners may serve personalized ads based on your interests. You can opt out of personalized advertising through:
- Android: Settings → Privacy → Ads → Delete advertising ID or Opt out of Ads Personalization
- iOS: Settings → Privacy & Security → Tracking → disable tracking for Dartly
- Web: Through the cookie consent banner or your browser settings
8.2 Non-Personalized Advertising
If you opt out of personalized advertising, you will still see ads, but they will not be tailored to your interests. Non-personalized ads may still use contextual information such as general geographic location or the content of the App.
9. Data Retention
- Locally stored data (player profiles, game history, statistics): retained on your device until you delete the App or clear the App's data manually. We have no access to this data and cannot delete it remotely.
- Analytics data (Firebase Analytics, Google Analytics): retained according to Google's standard retention policies, typically up to 14 months. We have configured our analytics to retain data for the minimum period necessary.
- Crash reports (Firebase Crashlytics): retained for up to 90 days.
- Advertising data: retained by Google in accordance with their privacy policies.
10. Data Sharing and Transfers
We do not sell, rent, or trade your personal information.
We share data only with the third-party services described in Section 5, solely for the purposes outlined in this Privacy Policy. These third-party providers (Google LLC) may transfer and process your data in the United States or other countries outside the EEA. Such transfers are safeguarded by appropriate mechanisms, including Standard Contractual Clauses (SCCs) approved by the European Commission.
11. Your Rights
11.1 Rights Under GDPR (EEA/UK Users)
If you are located in the EEA or UK, you have the following rights:
- Right of access: request a copy of the personal data we hold about you
- Right to rectification: request correction of inaccurate data
- Right to erasure ("right to be forgotten"): request deletion of your personal data
- Right to restriction: request that we limit the processing of your data
- Right to data portability: receive your data in a structured, machine-readable format
- Right to object: object to processing based on legitimate interest, including profiling for advertising
- Right to withdraw consent: where processing is based on consent, withdraw it at any time
To exercise any of these rights, please contact us at fratresfun+dartly@gmail.com. We will respond to your request within 30 days.
You also have the right to lodge a complaint with your local data protection supervisory authority. In the Czech Republic, this is the Office for Personal Data Protection (UOOU): https://www.uoou.cz.
11.2 Rights Under CCPA (California Users)
If you are a California resident, you have the right to:
- Know what personal information is collected about you
- Request deletion of your personal information
- Opt out of the sale of your personal information (we do not sell personal information)
- Non-discrimination for exercising your privacy rights
11.3 Rights for All Users
Regardless of your location, you can:
- Delete local data: uninstall the App or clear its data through your device settings to remove all locally stored information
- Opt out of personalized ads: adjust your device advertising settings as described in Section 8
- Disable analytics: where applicable, disable analytics collection through the App settings or your device settings
12. Data Security
We take reasonable measures to protect the information collected through the App. Locally stored data resides solely on your device and is protected by your device's own security mechanisms (lock screen, encryption, etc.).
However, no method of electronic storage or transmission over the internet is 100% secure. While we strive to use commercially acceptable means to protect your data, we cannot guarantee its absolute security.
13. Cookies and Similar Technologies
The web version of the App may use cookies and similar tracking technologies for:
- Essential cookies: necessary for the App to function properly
- Analytics cookies: to understand how users interact with the App
- Advertising cookies: to serve relevant advertisements
You can manage your cookie preferences through the cookie consent banner displayed on first visit, or through your browser settings. Note that disabling certain cookies may affect the functionality of the App.
The mobile and desktop versions of the App do not use cookies but may use device-level identifiers for analytics and advertising purposes.
14. Links to Other Websites
The App may contain links to third-party websites or services that are not operated by us. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party websites or services. We encourage you to review the privacy policy of every site you visit.
15. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. We will notify you of any material changes by:
- Posting the new Privacy Policy within the App
- Updating the "Last Updated" date at the top of this document
- Displaying an in-app notification for significant changes
We encourage you to review this Privacy Policy periodically. Changes are effective when they are posted.
16. Applicable Law
This Privacy Policy is governed by the laws of the Czech Republic and, where applicable, by the General Data Protection Regulation (EU) 2016/679. Any disputes arising from this Privacy Policy shall be subject to the jurisdiction of the courts of the Czech Republic, without prejudice to any mandatory consumer protection provisions of your country of residence.
17. Consent
By using the App, you consent to the processing of your information as described in this Privacy Policy. For users in the EEA, specific consents (such as for personalized advertising) are obtained separately through the App's consent management mechanisms.