Hilowe Privacy Policy

Effective date: 2026-10-30

Hilowe ("the app") is a free blackjack basic strategy and card counting trainer provided by DDJ B1 ("we", "us"). It deals practice hands on your device, checks your play against basic strategy for the rules you choose, and drills the Hi-Lo running count and true count. It is a learning tool only: there is no real-money gambling, no betting, no chips, no prizes and no in-app purchases. It has no account system, no login, no subscription and no server operated by us. Drills run on your device and work without a connection (ads aside).

Your data

Your practice history (hands played, your answers, accuracy, rating, streak), your rule settings and your app settings are stored locally on your device.

• The app itself does not upload this data, and we never receive it.
• The advertising SDK described below may collect information as explained in that section. Your practice history is not passed to the advertising SDK.
• If you use "Share", only an image card or short text with your session result (accuracy, rating, streak and a link to the app) goes to the app you choose through Android's share sheet.
• Android's standard app backup may include app data in your own Google account backup if you have device backup enabled; that backup is controlled by you and Google, not by us.

Permissions

• Notifications — for an optional daily practice reminder. You can decline or turn them off; everything else keeps working.
• Run at startup — to restore reminders after the phone restarts or the time zone changes.
• Vibration — for small haptic feedback during drills and reminder alerts.
• Internet / network state / advertising ID — used by the advertising SDK described below. Some permissions declared by Google libraries are not used by the app to read personal information.

Hilowe does not request location, contacts, camera, microphone, phone call access, SMS, calendar or photo library permissions, or permission to draw over other apps.

Advertising and information collected automatically

The app displays advertisements provided by Google AdMob inside the app only (never in notifications or in the widget, and never on drill screens while you are answering). To serve and measure ads and to prevent fraud, the AdMob SDK may collect and share with Google information such as your device's advertising identifier and other device identifiers, approximate location (including location derived from your IP address), app interactions (for example ad views and taps), crash logs and diagnostics. This data is shared with Google as a third party for advertising, analytics and fraud prevention purposes. For more information see https://policies.google.com/technologies/partner-sites.

For users in the European Economic Area (EEA), the United Kingdom and other regions where required, the app presents a consent form via Google's User Messaging Platform (UMP) before personalized advertising data is used; if you decline, non-personalized ads are shown. You can change your choice from the app's Settings screen ("Ad privacy settings") and reset or limit ad personalization in your device settings.

Responsible use

Hilowe teaches the mathematics of blackjack for practice and entertainment. It does not offer real-money gambling or any chance to win money or prizes, and practicing in the app does not guarantee results at a real table. Card counting is restricted or prohibited by many casinos, and gambling is restricted by law in many places — follow the laws where you live. If gambling is causing you problems, please seek help from a local support service.

Children

The app is intended for adults (18+) and is not directed to children; we do not knowingly collect personal information from children.

Your rights

Your app data exists only on your device and in backups you control; uninstalling the app removes the app's own copies. You can reset your practice history at any time from the app's Settings. Depending on your region (e.g. GDPR, CCPA), you may have rights regarding data processed by the advertising SDK; you can exercise ad-related choices through the consent form and your device's ad settings.

Changes to this policy

We may update this policy from time to time. Changes will be posted on this page with an updated effective date.

Contact

Questions about this policy: bloodturtle@naver.com