Implementing Smartrr on storefronts with modified Shopify themes or custom liquid themes
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Last updated: May 14, 2025
Note: Before implementing Smartrr, it's important to to determine your eligibility for offering subscriptions on your storefront. You must also have enabled for a product to be subscription-eligible.
Within the Smartrr app navigate to Setup under RESOURCES in the left-hand menu.
Subscription Programs are the heart of the Smartrr app. If you're just getting started with subscriptions, we can create a demo program for you by clicking Use a demo program. This will automatically create a "Subscribe & Save 10%" program for your shop.
Now that your Subscription Program is created, your next step is to assign a product/s to this program.
Similarly to above, Smartrr can create a demo product for you if you press Use a demo product. This will create a Smartrr Snack Cookie (Demo) in your Shopify shop. You can use this demo product for previewing purposes, and will be able to delete it at a later date directly within your Shopify admin.
Note: If you select to create a Demo Product, it won't appear in previews or in your storefront until you go to your Shopify admin and set the product sales channel availability to "Online Store".
If you want to start with one of the existing products in your shop, press Select from existing products. You can select one or multiple products from the modal that appears.
Now that you've completed the required Subscription setup steps, explore the remaining cards on this tab for ways you can further optimize your subscription business:
Customize the look and feel of your customer account portal
Warning: To prevent Smartrr from showing up on your site before you're ready to launch, we recommend navigating back to Shopify’s Themes to duplicate a copy of your current theme (Actions > Duplicate). Name it something that is easily recognizable, such as [Your Store] Smartrr Integration Copy [Date] so that when you modify the below code, you know you are updating the correct theme.
Select the Shopify theme you'd like Smartrr snippets to be in stalled on. Smartrr Snippets are files that are injected into your code base and will not modify any existing liquid files. These are required in order to render Smartrr on your storefront. There are five files that will be added under the Snippets section in your theme's liquid code.
Smartrr's subscription widget is an app block that can be added to your Default product page from your Shopify theme's online customizer. However, if you're not using a liquid Shopify theme compatible with app blocks, and/or are planning to manually render subscription options on your shop's PDPs with the assistance of a developer, you'll need to use our guided install process.
In your duplicated theme’s liquid code files, find the liquid file where your site’s product form information is being stored. This is usually called main-product.liquid or product.liquid. This file is typically located under either the Sections (for Online Store 2.0) or Templates (for older Shopify themes) heading.
Once you’ve opened the file, search for the product form {%- form 'product'}, paste the following Smartrr snippet inside the form. We typically recommend placing between the variant selector and the quantity selector, but you can place in any order you see fit.
When added, the product form should look something like this:
In your duplicated theme’s code base, find the liquid file for your store’s account page. This is usually called main-account.liquid or customers/account.liquid. This file is typically located under either the Templates heading.
At the very beginning of the file, paste the following snippet:
The file should look like this:
Save the file.
Whether you've created a demo Subscription Program or made a new program from scratch, you may need to double check and make sure your program details have been successfully "saved". To do this, go to Subscription Programs > Manage Program. Check and see if there is a Discard / Save banner at the top, and click the green Save button.
If your store is using , and have not , you’re eligible for our simple one-click automated install of Smartrr via our in-app Setup page.
Alternatively, you can create a new program from scratch by pressing Create my own program. You'll be redirected to our Subscription Program tab to complete this step.
Note: We recommend always using for your Shopify products when offering subscriptions, even if there is only one option for your product. Shopify auto-assigns a "Default variant" to a product that does not have any variants associated with it. If you decide to add variants to a product at a later date, and subscriptions are already running with the "Default variant", then those subscriptions will fail and will need to be re-mapped.
Note: If you're planning on using , leave the I'm planning on using Smartrr's subscription widget box checked. If you're not using a liquid Shopify theme compatible with app blocks, and/or are planning to manually render subscription options on your shop's PDPs with the assistance of a developer, uncheck this box. If you're unsure, no worries. You can always duplicate a clean version of your Shopify theme and re-install Smartrr snippets again.
Save the file. You should be able to preview Smartrr on your site upon successfully modifying this product form. Having trouble? Skip to steps.
If you would like to display a link to your customer’s Account Portal from the order status page, please email us at and we will assist you.
Still having trouble installing and don’t have access to a developer? We partner with a handful of excellent agencies. We also offer full white-glove onboarding support with our
