Not exactly what you describe, but there's Yuka for processed products (food and cosmetics). You scan a barcode and it gives you a score based on the product co

Not exactly what you describe, but there's Yuka for processed products (food and cosmetics). You scan a barcode and it gives you a score based on the product composition, it's quite helpful: https://yuka.io/en/ https://yuka.io/en/