Smile.io helps ecommerce businesses increase customer lifetime value and repeat purchases through easy-to-implement loyalty programs that reward customers for purchases, referrals, and engagement.
Last updated Feb 20, 2026 by AI Enrichment
Leading loyalty platform for Shopify and ecommerce merchants
Smile.io (formerly Sweet Tooth) is a customer loyalty platform designed specifically for ecommerce businesses. The company provides tools that enable online retailers to create and manage comprehensive loyalty programs, including points-based rewards, VIP membership tiers, and referral programs. Their platform integrates with major ecommerce platforms like Shopify, BigCommerce, and Wix to help merchants increase customer lifetime value and repeat purchase rates. While Smile.io operates in the broader marketing technology space rather than traditional advertising technology, it focuses on customer retention and engagement through loyalty mechanics. The platform serves primarily small to medium-sized ecommerce businesses, offering both free and paid tiers that scale with merchant needs. Smile.io has become one of the leading loyalty solutions in the Shopify ecosystem, with thousands of merchants using their platform globally. The company emphasizes ease of implementation and user-friendly interfaces for both merchants and their customers. Their solution helps brands build emotional connections with customers through gamified rewards experiences, ultimately driving repeat purchases and increasing customer advocacy through referral programs.
Reward customers with points for purchases, account creation, social shares, and other actions
Create tiered membership levels with escalating rewards and benefits
Enable customers to refer friends and earn rewards for successful referrals