Shopify has no real minimum or maximum order setting. Theme tweaks and cart messages get skipped by express checkout buttons, so a $20 order still sneaks past your $50 minimum. Mastiff enforces five rule types at checkout itself: minimum and maximum quantity, minimum and maximum order value, and sell-in-multiples for case packs. Scope a rule to a product, variant, collection, or the whole cart. Build it in plain English, test any cart in the simulator, then publish knowing it holds.

• Enforce MOQ, max quantity, order value, and case-pack multiples at checkout
• Rules hold at checkout itself, including Shop Pay and other express wallets
• Test any cart in the simulator before you publish, no surprises when it's live

Barcode apps generate and print. None of them prove a label scans as the product it belongs to. Mastiff scan-checks the exact PDF before you print it and shows the decoded value next to the one you intended. Every UPC, EAN-13, and Code 128 gets a valid check digit and stays unique across your catalog. Presets for Dymo, Brother, Zebra, and Avery print at the exact size you chose, with a calibration page for your printer. Previews, test prints, and reprints are never counted as printed labels.

• Every barcode is scan-checked before it prints, so a bad label never ships
• Valid check digits at generation and at print, duplicates blocked catalog-wide
• Exact-size presets for Dymo, Brother, Zebra, Avery, custom sizes, calibration
• Previews, test prints, and reprints are never counted as printed labels
• Print labels from a purchase order CSV, with column mapping, quantities filled