Limit — Minimum Order Quantity (MOQ) App for Shopify

Most quantity-limit setups fail in the same place: they validate the cart, not the order. A rule that lives in your theme's JavaScript stops a customer who uses the quantity selector. It does not stop the one who edits the cart via a permalink, adds items through a Buy Now button, checks out from a Shop app link, or simply opens the cart in two tabs.

For a store limiting a hyped drop to two units per person, that gap is the entire problem — the people most motivated to bypass the rule are exactly the ones who know how. And you usually find out after the order is placed, when you are choosing between cancelling on a customer or eating the loss.

Limit enforces at the checkout layer using Shopify Functions. The rule runs on Shopify's servers when the order is created, not in the browser, so there is no client-side check to skip.

This distinction is worth understanding before you compare apps, because most listings use the words interchangeably.

• Cart validation shows a message and blocks the cart page. Good UX, but it is advisory — anything that reaches checkout by another route ignores it.
• Checkout enforcement runs as a Shopify Function at order creation. If the order violates your rule, Shopify refuses it. There is no route around it, including the Shop app and Buy Now buttons.

You want both: cart validation so customers see a clear message early, and checkout enforcement so the rule actually holds. Limit does both, and the checkout enforcement is included on the free plan rather than gated behind an upgrade.

The most common serious use is the opposite of scarcity — forcing orders up rather than capping them. If your wholesale margin only works above a 12-unit order, a minimum order quantity is what protects it.

Limit applies MOQ rules by customer tag, so your wholesale accounts get a 12-unit minimum while retail customers buy one. Same store, same catalogue, no separate B2B storefront to maintain. You can layer a minimum cart value on top for accounts that mix small items.

Limiting quantity per order is easy. Limiting it per customer — across every order they have ever placed — is what stops resellers, and it is where most apps stop short.

Limit tracks lifetime and time-windowed purchase caps per customer: two per person ever, or three per month. Combined with scheduled rules, that covers the realistic launch scenario — a strict cap during the first 48 hours of a drop that relaxes automatically once the rush passes, without you having to be awake to change it.

Install the app and create a rule in under two minutes: pick the products, variants or collection, set your minimum and maximum, and save. No theme code, no snippet to paste.

Write your own error message so customers see something useful ("Maximum 2 per customer during launch week") instead of a generic rejection. Use the live preview to check how it reads on mobile before publishing. From there the analytics dashboard shows which rules are triggering, so you can tell the difference between a limit protecting inventory and one quietly costing you sales.

Minmaxify has 159 reviews to our 9, and it is a genuinely good app. If review volume is your deciding factor, that comparison does not go our way and we would rather say so.

What we would point out is the free tier. Minmaxify and Extendons both start with a 7-day trial and no free plan, and Extendons puts checkout enforcement behind its $7.99 tier. Limit's free plan covers three products or variants with checkout enforcement included, with no time limit. If you have one product that needs protecting — a drop, a wholesale SKU, a loss leader — you can run that permanently for nothing and never think about it again.