Comparing prices across chains

Dinarko tracks what several Serbian chains charge for the same products, weekly markdowns included. The chains are Lidl, IDEA, Maxi, Gomex and PerSu.

1. Open Shop on the phone, or Catalog in the web sidebar.
2. Shop opens on three modes. On sale is this week's markdowns, Aisles walks the catalog section by section, and Search is the search field.
3. Get to a product and open it. You get every size it comes in, and for each size what each chain charges, cheapest first.
4. Read the unit price per kilo or litre, beside the pack price. The bigger box isn't automatically the better deal, and this is the number that settles it.

The fastest way in is the barcode. The scanner sits inside the search field: switch Shop to Search, tap the scan icon in the field, and point the phone at anything in your kitchen. You land on that product with the size you scanned already selected. If the field has no scan icon, scanning is not switched on for your account.

If a barcode finds nothing, that product isn't in the catalog yet. The catalog covers groceries from the tracked chains, so imported specialities and non-food items are often absent.