Users are able to offer various options for purchasing goods and services at checkout through a subscription app. For example, customers can subscribe to a product delivery every month for a 10% discount, or every week for a 20% discount.

> Tip:
> To be eligible to use Shopify subscriptions, merchants must meet the [qualifying criteria](https://help.shopify.com/en/manual/products/purchase-options/subscriptions/setup#eligibility-requirements).

## How it works
To enable subscriptions, apps create [selling plan groups](/docs/api/liquid/objects/selling_plan_group), within which they create [selling plans](/docs/api/liquid/objects/selling_plan). These selling plans are linked to products and product variants. For example, a selling plan group called "Subscribe & Save" can offer selling plans that enable the customer to choose the delivery frequency and billing frequency separately. Merchants can offer multiple optional selling plans to customers, or specify a required selling plan for a product, such as "subscription-only" offers.
<figure class="figure"><img src="https://cdn.shopify.com/shopifycloud/shopify_dev/assets/themes/subscribe-and-save-f12fc411b7742990296bc68d9b4043f2e95f43c548cbfb644136878ba2b16f71.png" class="lazyload" width="1256" height="848"></figure>

## Implementing subscriptions in a theme
You can use Liquid and JavaScript to integrate subscriptions into your theme. You should also review the UX guidelines for subscriptions to ensure a great user experience.

<div class="resource-card-grid">
  <div>
  <a class="resource-card" href="/docs/storefronts/themes/pricing-payments/subscriptions/add-subscriptions-to-your-theme" data-theme-mode="">
    <div class="resource-card__indicator-container"><img
     src="/assets/resource-cards/docs"
     data-alt-src="/assets/resource-cards/docs-dark"
     aria-hidden="true"
     class="resource-card__icon themed-image"></div>
    <h3 class="resource-card__title">
      Add subscriptions to your theme
    </h3>
    <p class="resource-card__description">Learn more about how to integrate subscriptions into your theme.</p>
  </a>
</div></p>

<p><div>
  <a class="resource-card" href="/docs/storefronts/themes/pricing-payments/subscriptions/subscription-ux-guidelines" data-theme-mode="">
    <div class="resource-card__indicator-container"><img
     src="/assets/resource-cards/theme"
     data-alt-src="/assets/resource-cards/theme-dark"
     aria-hidden="true"
     class="resource-card__icon themed-image"></div>
    <h3 class="resource-card__title">
      Subscriptions UX guidelines
    </h3>
    <p class="resource-card__description">Learn how to build a subscription experience and style components in your theme.</p>
  </a>
</div>
</div>