Hagglezon is a free Android app that enables users to compare prices across various European Amazon marketplaces, ensuring they find the best deals on their purchases. The app allows users to search for products and displays prices sorted from lowest to highest, making it easy to identify the most cost-effective option. Additionally, it automatically matches the language of the Amazon site to the user's mobile settings, enhancing usability.

The app's primary function is to provide insights into price variations across different countries, sometimes revealing discrepancies of up to 50%. Users can make purchases directly through Amazon's secure servers, as Hagglezon simply redirects them to the appropriate marketplace without handling transactions. It is particularly useful during major sales events, ensuring users never miss out on the best offers.