Productizer

Productizer enables you to scan barcodes on various products.
When you scan a product, you can see how other people have rated the product and you can rate it yourself.
All you need to do is open the app and point it to the barcode.
It's fast and simple, no clutter.

If you forget whether you like certain product or not, you can quickly check how you rated it using Productizer and not buy things you don't like by mistake.
By rating products you also help other people decide whether they should buy something or not.