Product Overview

Sudoku is a premium classic Sudoku game built with SwiftUI. It includes offline play, Game Center integration for global leaderboards and achievements, and in-app subscriptions powered by RevenueCat.

Technical Stack

• Frontend: Swift & SwiftUI (iOS 17.6+)
• Gaming Integration: Apple GameKit (Game Center)
• Subscriptions: RevenueCat SDK
• Local Notifications: UserNotifications Framework

Libraries & Dependencies (Swift Package Manager)

• purchases-ios-spm (RevenueCat subscription management)
• ConfettiSwiftUI (Confetti visual bursts upon game victory)

Core App Features

1. Classic Sudoku Gameplay

• Difficulty Tiers: 4 levels of play (Easy, Medium, Hard, Expert).
• Extensive Customization: Customize UI with 10 themes and options
• Error Tracking: Tracks game mistakes and timers.
• Offline Play: Play without internet connection.

2. Game Center Integration

• 4 Classic Leaderboards: Compete globally on Easy, Medium, Hard, and Expert.
• 9 Achievement Badges: Unlock badges for speed records, win streaks, and zero-mistake completions.

3. UI Celebrations & Notifications

• Confetti Victory Bursts: Celebrates game completions using ConfettiSwiftUI.
• Daily Reminders: Schedules local push notifications to encourage daily play.

4. RevenueCat Subscriptions

• Premium Paywalls: Subscription gates premium features.
• Discount Paywall: Retarget returning users with a special 50%-off option.