PRIVACY POLICY
Hé Fēn Mahjong
Last Updated: 18 August 2026
This Privacy Policy explains how Kojent Partners ("we", "us" or "our") collects, uses and shares information when you use Hé Fēn Mahjong (the "App"). The App is available through the Apple App Store and Google Play Store.
We respect your privacy and aim to collect only the information reasonably necessary to provide and improve the App.
1. Information We Collect
Depending on how you use the App, we and our service providers may process device and technical information such as your device type, operating system, App version, language settings, IP address, installation or advertising identifiers where permitted, App usage information, crash and diagnostic information, and information relating to purchases or subscriptions.
We may also process information you choose to provide, including mahjong images, rules, documents, feedback, score reviews or other content submitted through the App.
2. Camera and Photos
Certain features allow you to take a photo of a mahjong hand or select an image from your device so that the App can identify tiles and assist with scoring.
The App only accesses your camera or photos with your permission. Images may be used to identify tiles, calculate or assist with scoring, apply the selected ruleset and return the requested result. Where cloud processing is required, an image or information derived from it may be securely transmitted to service providers that support this functionality.
Images submitted for normal scoring are not used for advertising. We do not access photos or media that you have not selected or otherwise allowed the App to access.
You can change camera or photo permissions at any time through your Apple or Android device settings.
3. Improving the App and Score Reviews
We may give you the option to allow submitted images, corrections or scoring information to be used to improve the App's tile-recognition and scoring systems. Where we rely on your consent, participation is optional and refusing will not affect your ability to use the normal scoring functionality.
If you report an incorrect score or voluntarily submit a result for review, we may receive the relevant image, ruleset, score, correction, comments and related technical information. We use this information to investigate the issue, correct errors and improve the App.
4. Firebase Services
We use Google Firebase services to support the operation and improvement of the App.
Firebase Analytics may collect App usage and interaction information to help us understand how the App is used. Our website uses Google Analytics to understand site usage in a similar way. Firebase Cloud Messaging may process device or installation tokens where you enable push notifications. Firebase AI and related services may also be used to support certain AI-assisted features.
5. Online and Multiplayer Features
If you use online or multiplayer functionality, we may process information necessary to establish and maintain the game session, including player or session identifiers, game or room identifiers, gameplay information, selected rulesets and connection information.
Other players may see information that you choose to make visible, such as a player name. You should avoid using personally identifying information as a public player name unless you want other players to see it.
6. Advertising
The App may display advertising through Google AdMob (Google Privacy Policy).
Depending on your device, settings, location and consent choices, Google and its advertising partners may process information such as IP address, device or advertising identifiers, approximate location, App usage information, advertisements shown to you, interactions with advertisements and related technical information.
This information may be used to provide, measure and improve advertising and, where permitted, personalize advertisements.
On Apple devices, where required by Apple's App Tracking Transparency (ATT) framework, the App will request your permission before using certain identifiers or engaging in tracking. You may refuse permission without losing access to the App.
On Android devices, advertising identifiers and related technologies may be used in accordance with your device and Google privacy settings, applicable law and your consent choices.
We do not sell personal information for monetary payment.
7. Purchases and Subscriptions
Purchases and subscriptions are processed through the Apple App Store or Google Play Store, depending on your device. We do not receive your complete payment-card details.
We may use RevenueCat to manage purchases, subscriptions and entitlement status. RevenueCat may process information such as App or installation identifiers, the product purchased, transaction status, subscription status and related technical information (RevenueCat Privacy Policy).
8. How We Use Information
We use information to provide and operate the App, score mahjong hands, provide AI and multiplayer features, manage subscriptions, provide support, investigate errors, improve the App, analyze performance, diagnose technical issues, prevent misuse, provide and measure advertising and comply with legal obligations.
We may share information where necessary with service providers that support the App, including Google, Firebase, Google AdMob, Google Play, Apple and RevenueCat, as well as hosting, technical, security and professional service providers.
We may also disclose information where required by law or in connection with a merger, acquisition, restructuring or transfer of our business.
Some third-party providers may process information under their own privacy policies.
9. Legal Basis for Processing
Where applicable data protection laws such as the GDPR or UK GDPR apply, we process personal data where necessary to provide the Services requested by you, for our legitimate interests in operating, securing and improving the App, based on your consent where required, or to comply with legal obligations.
Where processing is based on consent, you may withdraw your consent at any time.
10. Data Retention
We retain information only for as long as reasonably necessary for the purpose for which it was collected.
Images used for ordinary scoring are retained only as necessary to provide the requested functionality or investigate technical issues, unless you separately submit them for review or consent to their use for improvement. Feedback and score-review information may be retained while an issue is being investigated or where reasonably necessary to improve the App.
Analytics, crash, multiplayer and subscription information may be retained according to our operational requirements, applicable legal obligations and the retention arrangements of the relevant service providers.
When information is no longer required, we will delete or anonymize it where reasonably possible.
11. International Processing and Security
Our service providers may process information in countries other than the country in which you live. Where required by applicable law, appropriate safeguards are used for international transfers.
We also use reasonable technical and organizational measures designed to protect information from unauthorized access, loss, misuse or disclosure. However, no electronic system or method of transmission is completely secure.
12. Your Privacy Rights and Data Deletion
Depending on where you live, you may have rights to access, correct or delete your personal data, restrict or object to certain processing, request data portability, withdraw consent and opt out of certain personalized advertising activities.
You may request deletion of personal data associated with you by contacting hello@hefenmahjong.com.
Because some information may be associated with an installation or device identifier rather than your name, we may ask for information that helps us identify the relevant data.
Deleting the App does not necessarily delete information already processed by us or third-party service providers. We may retain limited information where required for legal, security, fraud-prevention or accounting purposes.
13. Device Privacy Controls
You can manage permissions and privacy settings directly through your Apple or Android device, including camera access, photo or media access, push notifications, advertising settings and tracking permissions.
Disabling a permission may prevent certain App features from functioning properly.
14. Apple App Store and Google Play Disclosures
In addition to this Privacy Policy, information about the App's data practices may be displayed through Apple's App Privacy disclosures and Google's Data safety disclosures.
These disclosures are intended to reflect the App's current functionality and the data practices of the third-party services used by the App.
15. Children's Privacy
The App is not specifically directed at children under the age of 13, or the applicable minimum age for digital consent in the relevant jurisdiction.
We do not knowingly collect personal information from children where parental consent is required by applicable law without obtaining the required consent.
If you believe a child has provided personal information to us improperly, please contact us.
16. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes to the App, our services, legal requirements or third-party technologies.
Where appropriate, we may provide notice of material changes through the App or our website. The date at the top of this Privacy Policy shows when it was last updated.
17. Contact Us
If you have any questions, requests or concerns about this Privacy Policy, please contact Kojent Partners at hello@hefenmahjong.com.