Educational Quiz System: Built interactive image and text-based quizzes with three difficulty levels (Easy: 10 questions, Medium: 20, Hard: 30) featuring confetti animations for completed quizzes. Personal Collections Gallery: Implemented a paginated animal collection system where users can save and revisit their discoveries, building their personal wildlife encyclopedia. Premium Subscription Model: Integrated RevenueCat for monetization with a 3-day free trial, offering unlimited identifications and an ad-free experience. Multi-Platform Authentication: Supported Google Sign-In, Apple Sign-In, and email authentication for seamless user onboarding. Enhanced User Experience: Implemented dark mode as the default theme, share functionality, in-app reviews, and rate-us features to boost engagement.