Best free Custom products Shopify apps in 2026 [Updated]

The Best Free Shopify custom product apps give merchants powerful tools to personalize their product offerings without added costs. From wholesale bulk order forms to color swatches, variant options, and 3D product configurators, these apps help stores deliver better shopping experiences. Merchants can add custom fields, multiple variant images, size charts, and location-specific inventory displays while letting customers personalize orders with text fields and notes. These essential customization tools make it easier for shoppers to find and configure exactly what they want.