AR: Buy GTINs/UPC/EAN barcodes

The reviews for the AR: Buy GTINs/UPC/EAN barcodes app are overwhelmingly positive, with users praising its ease of use, effectiveness in adding GTINs to products, and excellent customer support. Many users highlighted the quick response times from the support team, particularly mentioning Dennis as being extremely helpful. The app was commended for simplifying the process of adding GTINs, saving time, and resolving issues with Google Merchant Center. Users also appreciated the affordability of the app and the ability to track and manage unused codes efficiently. However, there was one negative review mentioning issues with GTIN recognition by Google despite adding the codes through the app.