Bulls & Cows: Number Duel

Bulls & Cows: Number Duel brings the classic code-breaking deduction puzzle to your phone. Play completely offline anytime without an internet connection, practicing alone or competing against AI and friends. ◆ Three Game Modes - AI Duel: Choose your own secret number and take turns guessing against the AI. Two difficulty levels are available: Easy (random guesses) and Normal (consistent logical deduction). - Solo Practice: Take your time guessing the secret number generated by the AI. The number of turns taken is recorded. - 2-Player Pass Duel: Pass a single phone back and forth with a friend to take turns guessing. A privacy shield screen ensures your secret number stays hidden. ◆ Customizable Rules and Features - 3 or 4 Digits: Guess 3-digit (default) or 4-digit (optional) secret numbers with unique digits from 0 to 9. Leading zeros are allowed. - Cow Hints Option: When a digit is correct but in the wrong spot (Cow), enable hints to reveal which input slot contains the cow. Games using hints are labeled in records. - No Time Pressure: There are no turn timers, allowing you to deduce and calculate each move at your own pace. - Large Keypad Buttons: Enjoy comfortable, accurate input with clear keypad buttons designed for mobile screens. - Local Game Records: Your last 200 game results (win, loss, turns taken, hint usage) are saved locally on your device. ◆ Reaction Time Test (Secondary Mode) - Measure your tap response time across 5 attempts from the auxiliary menu at the bottom of the home screen. - Your fastest and average reaction times (in milliseconds) are stored locally for up to 50 recent tests. - Results are for informal reference only, as touchscreen latency and hardware environments may vary. ◆ Theme and Display Settings - Display Modes: Choose between Light, Dark, or System default theme. - Audio and Haptics: Toggle touch sound effects and vibration feedback on or off. ◆ Explicit Limitations - Online multiplayer over the internet is not supported. Multiplayer is strictly local 2-player pass-and-play on one device. - No user accounts, logins, or external leaderboard servers are used. - Entered numbers and gameplay records are never transmitted to external servers. ◆ Advertising - This app is free to play and contains advertisements. - Banner ads appear only at the bottom of the Home and Records screens, never on the game board. - Interstitial ads may appear occasionally (at most once every 3 games with a 60-second cooldown) when returning to the home screen or starting the next game from the result screen. - No ads are shown during 2-player pass shield screens, reaction time tests, or active number input. ◆ Data Safety and Privacy - Game records and settings are stored exclusively in local device storage and are cleared when the app is uninstalled. - For ad delivery, analytics, and fraud prevention, Google Mobile Ads (AdMob) SDK may transmit encrypted advertising IDs, IP addresses (approximate location), device info, and ad interaction logs to Google LLC. - You can reset or delete your advertising ID anytime in your device settings. - The app is intended for general audiences aged 13 and older and does not target children under 13.

First release. Play Bulls & Cows offline vs AI, solo, or with a friend on one phone.