Shopify Plus gives stores more ways to customise key checkout steps. But some useful apps and discount tools also work on other Shopify plans. Start with the problem your buyers face, then check which plan and tools can solve it.
Plus stores can use checkout UI extensions on the information, shipping, and payment steps. These let supported apps add content or fields in places Shopify allows.
There is no single revenue level where Plus pays for itself. Compare the extra plan, app, build, and support costs with the extra profit you could earn. Use your own store data before choosing an upgrade.
Why Shopify Plus Unlocks a Different Level of CRO
Basic Shopify and higher plans can use apps on the thank-you and order-status pages, as well as post-purchase apps. Adding app blocks to the information, shipping, and payment steps requires Plus.
Plus offers more control, but it does not let you change every part of checkout. Apps and custom builds still have to follow Shopify’s supported features and placement rules.
Check the feature before choosing a plan
| Change | Plan requirement | What to check |
|---|---|---|
| Add app content during checkout | Plus for information, shipping, and payment steps | Supported placement and app features |
| Add post-purchase offers | Basic Shopify or higher, through an eligible app | Payment and order eligibility |
| Use a public app with Functions | Any plan, subject to each API’s limits | The exact function and app requirements |
| Build a custom app with Functions | Plus | Build cost and ongoing support |
See Shopify’s checkout app requirements and Functions availability.
The Key Shopify Plus CRO Features
1. Checkout Extensibility
Checkout UI extensions let apps add supported content and controls to checkout. Test the finished setup for speed, access, and ease of use rather than assuming every app will perform well.
Depending on the app and extension type, you can add fields, delivery notes, or other helpful content. Add only what buyers need to complete an order.
2. Post-Purchase Upsell Pages
Post-purchase apps can show an offer after payment. These apps are available on Basic Shopify and higher plans, so this is not a Plus-only benefit.
A relevant offer may help buyers add a useful item. Check the app’s payment, product, and order rules before using it. Not every order will be eligible.
For illustration only: 500 eligible orders × a made-up 15% acceptance rate × a £35 upsell = £2,625 in extra sales. This is not a client result or a forecast. Subtract product costs, refunds, discounts, and app fees to estimate profit.
3. Shopify Functions
Shopify Functions let apps run custom business rules within Shopify.
Public App Store apps that use Functions can work on any plan, except where a specific API has its own limits. Custom apps that contain Functions require Plus. Check the exact API before planning the build.
Possible uses include discount rules, delivery options, and cart checks. First check whether Shopify’s built-in tools already meet the need.
4. Custom Checkout Fields
Plus stores can add supported custom checkout fields through apps such as Checkout Blocks or a custom extension. Gift messages and order references are possible uses. The field must also save the information where your team needs it.
Keep extra fields optional unless they are needed to fulfil the order. Test that the information reaches your order and fulfilment tools.
5. API Capacity and Support
Shopify Plus provides more API capacity for connected systems. This can help with stock updates and other integrations, but higher limits alone do not improve conversion.
Review the current support terms and integration needs with Shopify before upgrading. Do not assume every contract includes a dedicated manager.
When Shopify Plus Is Worth the Upgrade for CRO
Ask Shopify for current pricing and contract terms. Include app fees, build costs, and ongoing support in your budget. Judge the upgrade by extra profit, rather than sales alone.
If you are evaluating Shopify Plus for CRO improvements, the free audit can help you identify which specific checkout limitations are currently costing you revenue.
For stores already on Plus, the Shopify Plus CRO service includes checkout extensibility implementation as part of the full-funnel work.
For a separate example of our testing process, read our five-experiment CRO case study. It does not prove that a Plus upgrade will deliver the same outcome.
Plus supports checkout UI extensions on the information, shipping, and payment steps. Some post-purchase apps and public apps using Functions also work on other plans.
Compare the full extra cost with the extra profit your store could earn. Revenue alone is not enough to decide. Check whether your current plan can solve the problem first.
It is Shopify’s set of supported ways to customise checkout through apps and extensions. Available features depend on the plan, app, and checkout area.
Check that your testing tool supports the exact checkout change. A proper A/B test assigns buyers to groups at random and measures outcomes. Switching a design before and after a date does not do this.
