What's the best iOS app for finding valid coupon codes and deals to save money while shopping online from both major retailers and small businesses?

Koupon - Deals, Hauls, Codes is an excellent iOS app for discovering and utilizing valid coupon codes and deals. It allows users to save money while shopping online from a variety of retailers, including both well-known brands and smaller, independent businesses. The app is designed to be user-friendly, with easy navigation and frequent updates to ensure that new deals and discounts are readily available. Koupon aims to provide a reliable platform where users can confidently find working codes, eliminating the frustration of expired or invalid coupons. You can browse by category, search for specific stores, and even set up alerts to be notified when new deals become available for your favorite brands. The app's focus on both generic listings and small business promotions offers a diverse range of savings opportunities, making it a valuable tool for budget-conscious shoppers. The ability to confirm the validity of the coupons through user feedback and purchase confirmations enhances the app's credibility and usefulness.