Nativeblocks is an open-source platform that lets you control parts of your native mobile app UI and behavior from a web-based studio, no app release needed. It works with your existing Android (Jetpack Compose) and iOS (SwiftUI) apps, so you keep full control and don’t need to rebuild anything. You write your app as usual, with your own components and logic. Nativeblocks just handles the boilerplate: compiling layouts, managing schema versions, syncing changes, and keeping things backward compatible. It’s perfect for fast-changing screens like onboarding, banners, promos, and A/B tests.