Subi is a Shopify app platform that helps businesses build recurring revenue through subscriptions, memberships, product bundles, and loyalty programs. Used by more than 9,000 Shopify brands, it offers tools for launching flexible Subscribe & Save plans with customizable discounts, billing schedules, and prepaid or pay-as-you-go options. Merchants can also create tiered memberships with recurring payments, free trials, exclusive access, and member-only offers, as well as subscription boxes, build-a-box experiences, and other product bundles. Its loyalty features support custom points, rewards, bonuses, and customer engagement.

Subi includes a customer portal where subscribers can manage plans, payments, and addresses, alongside customizable email communications, cancellation offers, payment recovery, analytics, and billing controls. Widgets can be styled to match a Shopify theme, and the platform supports multilingual customer experiences. Subi also provides onboarding, migration assistance, troubleshooting, documentation, and integrations with tools such as Klaviyo and Mailchimp. The company highlights responsive customer support and a setup designed to work natively with Shopify, helping merchants manage recurring customer relationships as their businesses grow.