The iOS Buy SDK makes it easy to create custom storefronts in your mobile app, where customers can buy products using Apple Pay or a credit card. The SDK connects to the Shopify platform using GraphQL, and supports a wide range of native storefront experiences. > Note: > Only direct onsite gateways are supported with the Mobile Buy SDKs. ## Requirements Before you can use the iOS Buy SDK, you'll need the following: * iOS 10.0 or higher * Xcode 8.0 or higher * An [Apple developer](https://developer.apple.com/register/) account ## Step 1: Generate an access token To generate an access token, you can [generate one in the Shopify admin](/docs/apps/build/authentication-authorization/access-tokens/generate-app-access-tokens-admin). Alternatively, you can create a custom app and use [authorization code grant](/docs/apps/build/authentication-authorization/access-tokens/authorization-code-grant). ## Step 2: Make your products and collections available After you've generated an access token, you need to make products and collections available to your custom app to access them from your app. After the products and collections are available, you can retrieve them using their respective IDs. > Tip: > If you have many products or collections, then you can use [bulk actions](https://help.shopify.com/manual/shopify-admin/productivity-tools/bulk-actions) to make them available in one step. ### Make a product available 1. From your Shopify admin, go to **Products**. 2. From the **Products** page, click the product you want to make available. 3. Next to **SALES CHANNELS AND APPS** click **Manage**. 4. In the **Sales channels and apps** dialog box, select the box next to the name of your custom app. ### Make a collection available 1. From your Shopify admin, go to **Products** and click **Collections**. 2. From the **Collections** page, click the collection you want to make available. 3. Next to **SALES CHANNELS AND APPS** click **Manage**. 4. In the **Sales channels and apps** dialog box, select the box next to the name of your custom app. ## Step 3: Configure your app You can configure your mobile app to use Apple Pay and universal links in the Shopify admin. ### Enable Apple Pay 1. From your Shopify admin, go to [**Apps**](https://www.shopify.com/admin/apps). 1. Click **Develop apps**. 1. Click the name of your app. 1. Click **Capabilities**. 1. In the **Storefront API integration** section, click **Configure**. - If you've previously assigned any Storefront API scopes, then click **Edit**. 1. Expand the **iOS Buy SDK configuration** section. 1. Click **Download file** to get the Shopify certificate signing request. 1. Generate your Apple Pay merchant identity certificate on your Apple Developer account. Refer to Apple's certificates documentation for detailed instructions. > Note: > The merchant identity certificate expires every 25 months. 1. Click **Upload certificate**. 1. Click **Choose file**, then select the Apple Pay merchant identity certificate that you downloaded. 1. Click **Save** to upload the certificate. ### Set up universal links You can set up [universal links](https://developer.apple.com/ios/universal-links/) to integrate your app with Safari. When an iOS user taps a link to your website, they'll be redirected to your app if they have it installed. > Note: > The Apple app site association file is hosted automatically on your Online Store at `/.well-known/apple-app-site-association`. 1. From your Shopify admin, go to [**Apps**](https://www.shopify.com/admin/apps). 1. Click **Develop apps**. 1. Click the name of your app. 1. Click **API Integrations**. 1. In the **Storefront API integration** section, click **Configure**. 1. Expand the **iOS Buy SDK configuration** section. 1. Enter your **Apple App ID**. 1. Select **Use iOS universal links**. ## Step 4: Access the iOS Buy SDK The Mobile Buy SDK includes the iOS Buy SDK and sample apps that show how you can use the SDK. View the iOS Buy SDK docs (version 3) on GitHub > Note: > If your app uses version 2 of this SDK or lower, then refer to [this API reference](http://cocoadocs.org/docsets/Mobile-Buy-SDK/2.2.0) instead. ## Checkout on mobile You can use Shopify’s web checkout for your mobile app. Using Shopify’s web checkout makes sure that your customers always have access to the latest version of the checkout, which is optimized for speed, conversion, and customer experience. ## Where to get help Mobile app development falls outside the scope of our support service. This means that Shopify support can't help if you run into problems, unless they're specifically related to the iOS Buy SDK itself. Below are the ways you can get help with the iOS Buy SDK. ### [Hire a Shopify Partner](https://www.shopify.com/partners/directory) Find a Shopify Partner for hire in our ecosystem of talented development agencies. ### [.dev Community](https://community.shopify.dev) Visit the developer forums to connect with the community and learn more about the Shopify API and app development. ### [Open a GitHub issue](https://github.com/Shopify/mobile-buy-sdk-ios/issues) Open an issue in the GitHub repository.