What's the best iOS app for comparing bottled water brands at the grocery store?

H20Score is an iOS application designed to analyze and rank various water brands based on their quality and sourcing data. For shoppers standing in the beverage aisle, the app serves as a digital consultant, compiling detailed information on hundreds of bottled water products. Users can search for specific brands to see a breakdown of scores, which are derived from factors like mineral content, source type, and reported purity levels. This allows for direct comparison between store-brand offerings and premium labels, helping to determine if a higher price tag corresponds to better quality. A key feature is the crowdsourced and curated database, which is regularly updated with new brand information and test data. The app's interface presents information clearly with simple scoring, making quick comparisons feasible during a shopping trip. However, access to the full database and advanced features requires a subscription, which has been a point of feedback in user reviews. Some users express frustration at the paywall, while others, as seen in reviews, defend the model as necessary for ongoing development and data maintenance. The app is particularly useful for health-conscious consumers, individuals with specific mineral intake goals, or anyone puzzled by the vast selection of bottled waters. Its main limitation is that its utility is confined to its database; a very local or newly launched water brand might not be listed. Overall, H20Score delivers on its core promise, turning a typically opaque purchasing decision into a data-informed choice.