This policy covers STK Smash, PLAY STK, ZUMORA Marble STK, CHESS STK, Magic Match STK, Scanner STK and related EX STK services. Product-specific policies are available for STK Smash, Scanner STK and ZUMORA. Magic Match STK has no STK account; account-related rules apply only to services with account features.
1. Information we may process
Depending on the app and features you use, we may process information you provide when creating an account, account identifiers, gameplay and challenge progress, friend invitations, customisation choices, purchase and entitlement records, device and technical information, and messages you send to support. PLAY STK may also process referral activity and information needed for eligible rewards or payouts.
2. How information is used
We use information to operate the apps, manage accounts, save gameplay and customisation, support matches and friend invitations, recognise purchased items, provide applicable challenges and rewards, display and measure advertising, prevent abuse, resolve technical issues and respond to user requests.
3. Service providers
Depending on the app and feature, service providers include advertising networks, Apple App Store and Google Play for purchases, Google gaming services and Apple Game Center for ZUMORA player identity and progress, and Cloudflare and Groq for Scanner STK AI requests. Scanner files may also be stored in the user’s own iCloud or Google Drive account when the user chooses. See the product policies for the scope of processing.
4. Security
We use reasonable technical and organizational measures, including access controls and encrypted network connections where available, to protect account and service data.
5. Retention
We retain account and related service information while it is needed to provide the app and handle user requests. After account deletion, limited records may be retained when necessary for legal obligations, transaction records, security, fraud prevention or disputes. Apple, Google and other providers may retain their own records under their policies. Contact us for information about records relating to your account.
6. Your rights
Depending on applicable law, you may request access, correction, export, restriction, object to processing or request deletion of personal information. Contact STK using the email below. Where a feature offers consent choices, you can use those controls and relevant device settings; available options depend on the app, device and region.
7. Account deletion
PLAY STK and CHESS STK offer account deletion in the app. Scanner STK account deletion and ZUMORA player-data requests can be sent using our deletion and data request page. Magic Match STK has no STK account; its route is a personal data request. STK can address data it can identify and controls. Separate platform accounts, personal cloud files and provider records may need to be managed through the provider.
8. Contact
Privacy questions can be sent to contact@exstk.com. Website: exstk.com.
9. CHESS STK accounts
CHESS STK supports user accounts. Account-related information is used to identify your account, support game features and handle account requests. Provide only the information requested by the app. Do not send passwords or payment card details to support.
10. Advertising — Google AdMob
CHESS STK and Magic Match STK display ads through Google AdMob. The Mobile Ads SDK may process IP addresses, approximate location derived from IP, device identifiers, ad interactions and diagnostics for advertising, measurement and reliability. Collection depends on SDK configuration, permissions and privacy choices. See the Google Privacy Policy.
11. Store purchases
In-app purchases are processed through Apple App Store or Google Play for the relevant product and platform. Product identifiers, transaction references and purchase status may be used to recognise purchases and provide support. Stores handle payments and keep their own records under their policies. Account or data deletion does not itself erase store records or request a refund.
12. Magic Match STK — no account required
Magic Match STK does not provide an STK account or require STK account registration. This does not mean the game or its providers process no data: gameplay and technical information, ad-related data, purchase records and any support information you send may be processed to provide the game, ads, purchased items and support. The advertising, purchase, retention and rights sections of this policy apply to Magic Match STK. Request help or data deletion at contact@exstk.com. No STK account ID is required.
13. Scanner STK
Scanner STK has app accounts. Files remain on the device or in the user’s selected iCloud or Google Drive account. Text extraction and ordinary search run on the device. Chat STK sends only the selected question, recent conversation context and selected image or PDF-derived content through Cloudflare to Groq. See the Scanner STK Privacy Policy for exact message, image and PDF handling.
14. ZUMORA Marble STK
ZUMORA Marble STK uses Google gaming sign-in or Apple Game Center for player identity and saved progress on the relevant platform, and includes advertising and store purchases. Read the ZUMORA Marble STK Privacy Policy for processing, platform choices and data requests.
15. STK Smash
STK Smash is developed by EX STK and supports Apple and Google sign-in, saved gameplay, rewards, country-based rankings and optional event and character notifications. Supabase supports account and backend services; the game includes AdMob ads and Apple or Google store purchases. Read the STK Smash Privacy Policy for the actual data categories, notification controls, providers and deletion requests.