Shop App Migration

Shopify reports rebuilding its Shop app for iOS and Android in 12 weeks using coding agents alongside engineers. The existing app supplied a detailed reference: agents could inspect what a feature did before recreating it in each platform's native technology.

Checking behavior was central to the work. The team compared screenshots and application events at defined checkpoints, including the analytics data downstream systems expected. Engineers reviewed plans and code, and feature teams checked edge cases. This migration account shows how an existing implementation and repeatable checks supported the rewrite. Shopify's separate account of the broader mobile decision covers why it reconsidered sharing one implementation across platforms.