Building a hyper flexible backend driven UI: Behind the scenes of the new RevenueCat Paywalls
summary
RevenueCat builds a backend-driven paywall editor that sends a recursive JSON component tree to the app and renders it as native SwiftUI (not a webview). The SDK decodes with Codable, converts nodes to view models, validates the tree and either renders or falls back to a hard-coded paywall. Layout is composed from three primitives, text/image/stack primitives, plus container types for buttons, packages and purchases; backward compatibility relies on component fallback and keeping core primitives stable so older SDKs still work.
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chapters (11)
- 0:00Introduction
- 2:04Backend driven UI
- 3:07Reasons for backend UI frameworks
- 5:16Backend UI complexity gradient
- 8:46RevenueCat subscription SDK
- 12:37Paywalls V1 architecture limits
- 18:17Paywalls V2 goals and team
- 20:00New editor demo
- 21:46Paywalls V2 architecture
- 26:44Backwards compatibility
- 29:54Summary and Q&A
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