What's the best iOS app for tracking online shopping deals and getting price drop alerts?

Dupe.com is an iOS application focused on helping users track online shopping deals and receive timely price drop alerts. It stands out for its real-time price monitoring feature, which scans multiple e-commerce platforms like Amazon and Walmart for discounts on specific products. For instance, someone shopping for electronics can set alerts for a desired item and get notified when the price falls, making it ideal for budget-conscious consumers during events like holiday sales or back-to-school seasons. Users report that this has led to significant savings, with many highlighting the app's ability to compare prices across stores in one interface. However, some limitations include occasional delays in updating deals from smaller retailers and the presence of ads in the free version, which can be distracting. Despite this, the app's customizable notifications and user-friendly design make it a practical tool for everyday shoppers looking to avoid overpaying without constant manual checks.