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Flutter White-Label: Build-Time vs Runtime Approaches for Multi-Tenant Apps

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A technical guide published on DEV Community explores three core techniques for building white-label Flutter apps that serve multiple brand tenants from a shared codebase. The two main philosophies are build-time, where each tenant gets a separate compiled build, and runtime, where a single build fetches tenant configuration from an external endpoint. Within build-time, developers can use Flutter flavors for deep native-level isolation or a folder-per-tenant approach with swap scripts for smaller teams without dedicated backend infrastructure. The runtime approach suits projects with many tenants and frequent branding changes, though it requires careful backend handling to prevent configuration leaks between tenants. The article notes that most mature projects combine both philosophies, using build-time for fixed attributes like app icons and permissions, and runtime for frequently changing elements such as colors, text, and feature flags.

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