Zepto Product Personalizer

This app does have it's limitations - but the price it right, and it fits most basic customization needs. Most other customization software with live view capability on Shopify are WAAAAY too expensive. This is the best bang for buck you are going to get for this feature on Shopify. In addition, the team behind this app is incredibly responsive when it comes to customer service. That bumps up this app to 5 stars. When you're under the gun, and building something for a client, it's nice to know that the dev team behind the app you are using have your back.