PackOS vs Intuitive Shipping
The box comes first, then the rate.
PackOS Checkout comes at the order box-first: it packs against your box library, quotes live USPS, UPS and FedEx rates for the box it picked, and — when the label is bought through PackOS Labels — the order carries what that label actually cost. That is the margin loop. Shopify today — WooCommerce and other platforms coming soon.
14-day free trial on the plan you choose
This is a factual comparison and it says where Intuitive Shipping wins.
The core difference
What each one is built to do
Intuitive Shipping gives merchants a rules engine — conditions, scenarios and blended rates the merchant configures — and SmartBoxing, which packs cart items into boxes the merchant has defined. Merchants who want the checkout to follow a policy they have written down get a lot out of that shape.
PackOS Checkout comes at the same order box-first: it packs against your box library, quotes live USPS, UPS and FedEx rates for the box it picked, and — when the label is bought through PackOS Labels — the order carries what that label actually cost. That is the margin loop. Shopify today — WooCommerce and other platforms coming soon.
Detailed feature comparison
A side-by-side look at what each platform offers. A checkmark where a capability is built in, and a note where the answer depends on your own setup.
| Feature | PackOS | Intuitive Shipping |
|---|---|---|
| Live carrier rates at checkoutLive carrier rates shown to the customer during checkout, without custom code | Built in | Built in |
| Bin-packing box selectionAutomatically determines the optimal box for each order before quoting carrier rates | Built in | Built inSmartBoxing packs into your boxes; see Intuitive Shipping |
| Rules and conditionsMerchant-configured conditions that decide which services appear at checkout | Shipping rules on the Growth plan and above | Built inExtensive scenarios and conditions |
| Multi-box ordersAutomatically splits orders across multiple boxes when items do not fit in one | Built in | Built inSmartBoxing can produce a package set; see Intuitive Shipping |
| Setup without a developerTime from install to live, accurate checkout rates | Built inNo developer, no theme code | Built inGuided setup; see Intuitive Shipping |
| Shipping margin per orderThe gap between what the customer paid and what the label cost | Built inAutomatic with both products | Depends on what your checkout collects |
Intuitive Shipping publishes what it supports, and its current plans, on its own site.
When Intuitive Shipping is the better choice
Intuitive Shipping is a mature Shopify rate app, with a rules engine and its own packing. There are real situations where it is the right tool for the job.
- You want scenario-level control over what checkout showsIntuitive Shipping is built so a merchant can describe a shipping policy in conditions and scenarios and have the checkout follow it. If your policy is a set of decisions you would rather state directly, that control is the product you are buying, and it is a good one.
- Your rates follow a policy you have written downWhere the shipping answer is a set of decisions — which service shows, to whom, at what price — a rules engine states it directly instead of deriving it. Intuitive Shipping is built for exactly that, and scenarios you can read back are worth having.
- You already have a rules setup you trustConditions and scenarios that match how you really ship are real work that took real time. If yours already produce rates you are happy with, staying is a reasonable answer — and this page is here for the day you want to compare the two.
When PackOS is the better choice
PackOS Checkout was built for Shopify merchants who want the rate their customer sees to match the box the order actually ships in.
- Stores with varied product sizesIf your catalog includes items of different dimensions and orders often combine multiple products, bin-packing ensures the right box is selected for every order — and rates reflect actual shipping cost.
- You want accurate checkout rates without codingPackOS Checkout uses bin-packing to determine the right box, then queries carriers with the actual dimensions and weight. Your customers see real rates at Shopify checkout — no development work, no API integration, no custom code.
- Stores losing money on shippingIf you suspect shipping is a cost center but cannot prove it, PackOS margin analytics show exactly how much you make or lose on shipping for every order. No spreadsheets, no manual matching.
Switching
Moving from Intuitive Shipping
- Install PackOS Checkout from the Shopify App Store and enter the boxes you actually pack in — inside dimensions and empty weight.
- Choose the carriers you want quoted, then run a test checkout and read what comes back.
- Switch the carrier service in your Shopify shipping settings when the rates look right; nothing else on the store changes.
- Nothing to cancel: PackOS Checkout bills through Shopify and the 14-day trial applies to the plan you choose.
Accurate rates. Real margin data. No code.
PackOS adds bin-packing, multi-carrier rates, and margin analytics to your Shopify checkout.
One order · Two numbers · One difference
Quoted at checkout
What the customer paid you to ship it
PackOS Checkout
Paid for the label
What the carrier charged you to move it
PackOS Labels
Margin
The difference, recorded on every order
Both products, on the same record
Run either product on its own. Run both and the same order carries both numbers.
FAQ
PackOS and Intuitive Shipping, answered
How does PackOS Checkout know which box to quote?
Does PackOS Checkout work with carrier-calculated rates I already have?
Do I need PackOS Labels to use PackOS Checkout?
What happens when an order needs more than one box?
Find out what shipping is really costing you.
PackOS Checkout quotes the real rate at your Shopify checkout. PackOS Labels buys discounted labels for any store and shows the margin on each one. Start with either.
- 14-day free trial on every Checkout plan
- Labels is free, always