YOLI Good Luck

YOLI Good Luck is a colorful English learning game for children to practice math basics: Addition, Subtraction, Multiplication, and Division.

Core Features

• Learning Mode: endless practice with instant feedback.
• Quiz x10 Mode: fixed 10-question challenge with score tracking.
• Time Attack Mode: 60-second fast challenge for quick thinking.
• Adventure Map Mode: 50 unlockable levels with star rewards.
• Difficulty Levels: Easy, Medium, and Hard.
• Mixed Operation Support: practice all operations together.

Design Highlights

• Full-screen layout optimized for iPhone.
• Bright gradient backgrounds and playful animations.
• Dynamic gradient highlight for the selected Tab Bar item.
• Adventure map route now has a glowing animated path.
• Adventure level result popup now shows celebratory particle effects.
• Unified theme colors across all pages.
• Clean and simple English UI for children.

Settings & Data

• Local data storage using UserDefaults.
• Track best quiz score, time attack score, streaks, and accuracy.
• Track unlocked adventure levels and stars for each level.
• Theme switching (Ocean, Sunset, Forest).
• Sound and background music toggles.
• Built-in kid-friendly looping background music resource.
• English voice coach: reads each math question and gives encouragement.
• Voice speed toggle: Slow or Normal.
• Auto-repeat question reading every 6 seconds until answered.
• Auto-repeat voice switch in Settings for quick on/off control.
• Auto-repeat interval options: 3s / 6s / 10s.
• Adventure map route speed options: Slow / Normal / Fast.
• Kid Mode one-tap preset: Slow voice + Auto Repeat ON + 3s interval.
• Parental Lock: Settings tab opens only after a 2-second long press.
• Second-layer parental protection: 4-digit PIN required after long press.
• Default parental PIN: 1234 (can be changed in Settings).
• Security cooldown: after 5 wrong PIN attempts, lock for 30 seconds.
• During cooldown, parent gets vibration + red warning banner feedback.
• PIN entry uses a randomized number keypad order each time.
• PIN keypad buttons have tap animations and sound feedback.
• Correct PIN shows a green success flash with a checkmark; wrong PIN triggers a red shake with a red glow border.
• Correct PIN also plays a distinct success tone.
• Wrong PIN also plays a distinct error tone.
• App now uses custom kid-friendly tap/success/error tones (local WAV assets).
• Separate sliders for tap, success, and error tone volumes.
• Long-press (1s) button to reset all tone volumes to default.
• Long-press reset button shows a 1-second progress ring animation.
• Reset button border and progress ring now use theme-matched gradients.
• While holding reset, the button shows a breathing glow animation.
• Parental PIN panel border also uses theme-matched gradient styling.
• Trophy system: unlock badges such as First Step, Explorer, and Math Legend.
• Reset local records at any time.