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Best Flutter Dependency Injection Packages

Dependency Injection

By Abdelrahman Saed — Senior Mobile Engineer. Last updated: 2026-08-10.

Dependency injection in Flutter has two camps: service locators (get_it — resolve types by key) and widget-tree DI (Provider — resolve types through the widget tree context). The packages below serve both approaches.

The packages

get_it Score: 9/10

Service locator for Dart — register types at startup, resolve them anywhere without BuildContext.

3k+ likes on pub.dev

Strengths:

  • No BuildContext dependency — works in services, tests, and isolates
  • Simple registration — registerSingleton, registerFactory, registerLazySingleton
  • Lightweight — no code generation required
  • Battle-tested at scale

Tradeoffs:

  • Runtime errors for missing registrations (injectable mitigates this)
  • Service locator anti-pattern — some teams prefer constructor injection

Best for: Registering services, repositories, and API clients that need to be accessible outside the widget tree.

Production note: We use get_it at iStoria for all service registration. Combined with injectable, it auto-wires dependencies at 50+ modules without manual registration errors.

injectable Score: 8.5/10

Code-generated dependency injection on top of get_it — annotate classes, get auto-wired registration.

1k+ likes on pub.dev

Strengths:

  • Compile-time dependency wiring — no missing registrations at runtime
  • Annotate classes with @Injectable, @LazySingleton, @Singleton
  • Generated registration file is always up to date
  • Works with environment-specific registrations (dev, staging, production)

Tradeoffs:

  • Code generation adds a build step
  • Generated code can be hard to debug
  • Learning curve for annotations and environments

Best for: Apps with 10+ services that want compile-time safety for dependency registration.

Production note: injectable + get_it is our DI stack at iStoria. Every service, repository, and data source is annotated; injectable generates the registration; get_it resolves at runtime. Zero manual wiring across 50+ modules.

provider Score: 7/10

InheritedWidget wrapper for widget-tree-scoped dependency injection and simple state.

6k+ likes on pub.dev

Strengths:

  • Simplest DI story — wrap widgets in Provider, resolve via context
  • Officially recommended by the Flutter team
  • Works for both DI and simple state management

Tradeoffs:

  • BuildContext-dependent — can't resolve from services or tests
  • Runtime exceptions for missing providers
  • Not suitable for services that need to outlive the widget tree

Best for: Small apps, or widget-scoped dependencies (theme, locale, feature flags).

Production note: Provider works for small apps but doesn't scale. At iStoria, services need to be accessible from background tasks and tests — that requires get_it, not Provider.

FAQ

Should I use get_it or Provider for dependency injection?

get_it (with injectable) for services that need to be accessible outside the widget tree. Provider for widget-scoped dependencies (theme, locale). Many apps use both — get_it for services, Provider for UI-scoped state.

Available for hire. Abdelrahman Saed is a Senior Mobile Engineer (Flutter) — open to full-time, fractional, contract, or advisory work. Hire me →

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