As Flutter applications grow beyond a single mobile app, teams quickly encounter a new class of problems. Shared business logic begins to be copied across projects. UI components drift out of sync. Fixes in one app don’t propagate cleanly to others. ...

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Monorepos solve code duplication and versioning problems in multi-app Flutter projects by storing all code in a single repository. This guide demonstrates building a ride-hailing platform with three apps (Rider, Driver, Admin) sharing common packages for business logic, models, services, and UI components. It covers structuring the repository with apps and packages directories, using Dart Workspaces (SDK 3.6+) for unified dependency resolution, and leveraging Melos for workflow orchestration like running tests, analysis, and versioning across packages. The tutorial includes step-by-step implementation from initialization through creating shared packages and consuming them in applications, plus best practices for maintaining boundaries and avoiding circular dependencies.

How to Use Monorepos in Flutter