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Conducting a Comparative Study on Flutter Architecture Patterns – Redux vs BLoC vs Provider

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Nidhi Sorathiya

August 4, 2023

Nidhi Sorathiya

August 4, 2023

Hello there! If you're reading this, you must be a Flutter developer, or someone interested in diving into the world of Flutter—either way, you've come to the right place!

The charm of Flutter lies in its flexibility and speed of development. But, for any app to hit it off, it's cardinal for it to be built on a solid foundation— the right architecture. That's where we will focus our attention today, as we walk through the three popular Flutter architecture patterns: Redux, BLoC, and Provider.

Flutter architecture is akin to the blueprint of a house—it outlines how the application's code would be structured and how the different parts of the application should interact with each other. Choosing the wrong architecture can lead to an application that is difficult to maintain, debug, or scale over time.

That is why understanding and selecting the right Flutter architecture is so essential. Today, I will guide you through the nitty-gritty details of Redux, BLoC, and Provider—asserting their significant characteristics, differences, and use cases. My aim is to offer you a clear path to choose your Flutter architecture pattern wisely, hence making your Flutter app development process smoother and more efficient.

Understanding Different Architectures

In this section, we'll dissect and understand how each of these Flutter architecture patterns works. By understanding their core principles, we can better evaluate their suitability for different projects.

Flutter Redux

Firstly, we dive into the world of Flutter Redux. Redux follows three main principles: single source of truth, the state is read-only, and changes are made with pure functions.

Redux is based on a unidirectional data flow, established on the idea of maintaining the application state in a single immutable data structure. Essentially, Redux handles the application state and dispatches actions to update this state.

Flutter Redux aids in effective state management. Its predictability ensures that the same state and action will always result in the same behaviour, making it easier to test and debug apps.

Flutter BLoC

Alright then, let's wander into the BLoC territory. BLoC stands for Business Logic Component. It's a design pattern created by Paolo Soares and Cong Hui from Google, during DartConf 2018.

The underlying concept of BLoC is that everything in Flutter is a stream of events: widgets submit events; other widgets respond. BLoC helps separate the presentation layer from the business logic, ensuring that the visual part of the application isn’t directly affected by any changes in logic and vice versa.

From my perspective, as a Flutter developer, BLoC seems like the ideal pattern when we’re working with streams and want to manage the state of our application in a more predictable way.

Flutter Provider

Provider has deemed the 'recommended' approach to manage state by the Flutter team. It's a pattern that beautifully wraps around the concept of InheritedWidgets, which is a bit complex, but incredibly powerful.

If you hear "Provider" and feel a slight shiver down your spine, believe me, you are not alone! When I first learned about Provider, it did seem intimidating, but once I got the hang of it, I realised its magic.

The core idea of Provider is fairly simple - it's all about providing an object (which could be anything from a single variable to a whole class instance) that could be later accessed and used from anywhere within your widget subtree.

Now that we have talked about Redux, BLoC, and Provider, I believe you'd be fairly caught up with their basics in the context of Flutter architecture. However, to pick the most appropriate one for your app, we'll have to dig deeper and understand their differences, advantages and use cases, shouldn't we?

Comparative Analysis

Awesome! Now, equipped with a firm understanding of the three different Flutter architecture patterns - Flutter Redux, Flutter BLoC, and Flutter Provider - let's put them head-to-head and analyze their differences.

Code Complexity and Readability

The first frontier is understanding the code complexity and readability of each of these architectures.


When it comes to Redux, the 'single source of truth' principle makes your application predictable and testing easier. However, for simple applications, the amount of boilerplate Redux introduces may be burdensome.


With BLoC, the architecture pattern is palatable once you know the rules of using streams in Dart. However, the learning curve might be steep if you're new to the reactive programming paradigm. Also, the code can get convoluted if BLoC is not aptly implemented.


Provider, on the other hand, with its simplicity of providing and accessing data anywhere in the widget tree, may seem straightforward. It's easy to reason about and leads to well-organized code. However, for complex state management, it may be better powered using it in conjunction with other concepts like Flutter BLoC.

Overall, Redux might feel overwhelming because of its verbosity, BLoC might feel difficult due to its complexity (especially if you're not comfortable working with streams), and Provider might feel a bit primitive if you need more than just simple state management.

State Management Efficiency

Let's dissect our Flutter architectures patterns from the perspective of state management efficiency next.


Redux manages the entire state of the app in a single, immutable data structure. Although it might seem hefty at first, it provides a robust and predictable management system. It allows you to "time travel" by moving back and forth in the action log, inspecting the state at various points, and easily discovering bugs.


BLoC uses streams for state management, which ensures your UI is always in sync with the underlying logic and data. The separation of concerns is clear - the UI components remain pure and innocent like fairies visually representing whatever the BLoC told them to.


With Provider, although basic state management is a breeze, complex scenarios may necessitate the use of other techniques. It does shine by making dependency injection and state propagation super easy, but the complexity grows with the complexity of state management needs. However, when paired with Flutter BLoC or ChangeNotifier, it becomes dead easy to move data around statelessly, while the state stays strictly in the BLoC or a model class.

It's becoming clear that each of these Flutter architecture patterns has a unique approach towards state management, each with its own set of pros and cons. This isn't a suspense novel, but I am excited to know your thoughts, so far!


Keeping up the momentum, the next station we're stopping at is Testability.

Here's a statement I swear by - good testability could mean the difference between a smooth-sailing app and a frustrating, bug-infested one. So, how do our architectures stack up when it comes to testing?


When using Flutter Redux, testing becomes rather straightforward. Since Redux follows the principle of pure functions (without any side effects), it's easier to predict the outcome, thus easier to test. You can easily unit test your actions and state changes independently, making your life as a developer, quite dreamy!


Testing in BLoC, while not overly complicated, requires a decent understanding of streams. You've got to ensure that the output of BLoC changes as expected based on different input events. Because of the clear separation of UI and business logic, tests can focus squarely on how business logic responds to various scenarios eliminating dependencies on UI, databases, or backend services.


For Flutter Provider, testing your application will often require mocking the providers. Once that's appropriately set up, you can verify if your UI reacts correctly to different data inputs. It might take a bit more up-front work than Redux, but hey, high-quality apps need a bit of an investment, right?

Seems like each of our contenders holds strong when it comes to testing. So far, so good!


Great! It's crucial that we consider performance - after all, nobody likes a sluggish application. Let's examine how our three Flutter architecture patterns fare on this front.


Flutter Redux, due to its strict unidirectional data flow and predictable state management, usually results in performant applications. However, the use of middleware for complex scenarios can add a bit of overhead. Make sure you structure your store and reducers wisely to avoid unnecessary rebroadcasting of state changes.


In BLoC, the use of Streams ensures that widgets get updated efficiently when there are state changes. As long as you manage your streams properly and dispose of them when they're not needed, you should have a super sleek app in your hands!


Provider, being merely a wrapper over InheritedWidget, is incredibly performant. It provides data only to those widgets that need it. Just make sure to avoid any excessive rebuilding of widgets listening to the data. Sounds quite manageable, isn't it?

That wraps up the comparative analysis for these Flutter architecture patterns. We've explored their workings, complexities, state management capabilities, testability, and performance aspects.

Have you gotten any closer to picking a favourite? Do share your thoughts!

Use Cases: Redux vs BLoC vs Provider

Hello again, my Flutter enthusiast! With a fair comparative analysis under our belts, let's journey into the lands of use cases. After all, understanding where and when to use a certain pattern is as important as understanding how it works.

When to use Flutter Redux

Consider using Redux when your application has a large and complex state that could benefit from history tracking, undo/redo functionality or debugging through time-travelling. It is ideal for cases where you want predictable behaviour with a single source of truth. However, the extra boilerplate might not be a brilliant choice for a smaller or simpler Flutter app.

When to use Flutter BLoC

If your application relies heavily on streams, like real-time updates or chat messages, the BLoC pattern is an excellent choice. BLoC's reactive paradigm makes it a darling for APIs returning a continuous stream of data. It's also a reliable friend when you aim to strictly separate UI and business logic. Plus, if your app needs to manage shared state across multiple widgets, BLoC comes in handy.

When to use Flutter Provider

The Provider shines when you need simple state management or dependency injection, especially if you plan to share that state across your app. It's also the right option if you are just starting to dip your toes into state management as it is simple and straightforward. Remember though, for complex state management, you might have to combine it with ChangeNotifier or even the BLoC pattern.

At this point, I believe you have a more defined idea for choosing your ideal Flutter architecture pattern. But to finally seal the deal, we need to discuss the good and the bad - the advantages and disadvantages of each pattern.

Pros and Cons

Alright, armed with the knowledge of what each pattern promises and where they really excel, it's finally time to discuss the two sides of the coin - the pros and cons of each of these Flutter architecture patterns. Here we go!

Flutter Redux

Redux, despite its simplicity, brings a lot to the table. However, like anything, it's not without its downsides.

  • Single source of truth makes the state predictable.
  • Unidirectional data flow aids in maintaining consistency.
  • Excellent for debugging and for features like undo/redo.
  • Makes testing easier due to the predictable outcome of actions.
  • For simple apps, Redux can introduce unnecessary complexity and boilerplate.
  • Middleware needed for async operations might add overhead.

Flutter BLoC

BLoC is an enigmatic individual - both powerful and complex in equal measures. Let's discuss its positives and negatives.

  • Excellent choice for reactive programming or stream-based apps.
  • Ensures clear separation of UI and business logic.
  • Allows easy sharing of state across multiple widgets.
  • Can be difficult to grasp, especially if you're new to streams.
  • Needs careful management of streams.

Flutter Provider

And finally, the Provider. Being recommended by the Flutter team, it has its charm, but it also has room for improvements.

  • Great for simple state management and dependency injection.
  • Less boilerplate code compared to Redux and even BLoC.
  • Easily couples with other patterns for more complex use cases.
  • For complex state management, relying solely on Provider may not be enough.
  • Might lead to excessive widget rebuilds if not used carefully.

There you have it! We've now dissected Redux, BLoC, and Provider from all sides. From understanding their principles to discussing their pros and cons, we've done it all.

Fluttering Forward with WiseGPT!

In this journey through Redux, BLoC, and Provider, we've been up close with some powerful tools to architect our Flutter apps. Choosing the right one makes our Flutter adventures simpler, more efficient, and way more enjoyable. Though our preferences might differ, our shared goal remains - to craft striking Flutter applications with greater ease.

And what if I told you there's a powerful new companion that could make your Flutter journey even smoother? Introducing WiseGPT, a plugin that helps you design your widget code efficiently. Consider it a fun sidekick on your Flutter escapades, making the developing app architecture process even more intuitive. It can help you manage your app with these state management approaches efficiently!

You must be wondering how WiseGPT will help?

WiseGPT is a game-changing plugin that brings a revolutionary code generation experience to your Flutter projects. Specifically designed for Flutter, this powerful IDE plugin allows you to effortlessly create complex architectural code without any output size restrictions, significantly enhancing your productivity.

Seamless Integration with Your Coding Style

One of the standout features of WiseGPT is its ability to mirror your coding style seamlessly. No more worrying about disjointed code snippets or inconsistent formatting. The code generated by WiseGPT effortlessly blends with your existing codebase, maintaining consistency and reducing the need for tedious adjustments.

This means more time spent building exceptional apps with preferred state management and less time grappling with code structure.

Intuitive and Promptless Code Generation

Gone are the days of dealing with prompts or spending precious minutes tweaking the generated code. WiseGPT intuitively understands your requirements without any prompts, ensuring a smooth and efficient code generation process. It effortlessly grasps the essence of your architecture needs and generates the corresponding code, saving you valuable time and effort.‍

Automated File and Function Creation

WiseGPT takes automation to a new level by automatically creating files and functions for your chosen state management. No more manual code management or setting up boilerplate code. With WiseGPT, you can focus on defining the core aspects of your app architecture while the tool handles the rest.

This automation streamlines your development workflow and allows you to build more robust and scalable Flutter applications in a fraction of the time.

Elevate Your Flutter Development Experience

Incorporating WiseGPT into your Flutter development toolkit empowers you to take your Flutter projects to new heights. This plugin streamlines the code generation process, saving you time and effort while maintaining the quality of your app. Say goodbye to mundane coding tasks and embrace the seamless integration and automation that WiseGPT brings to your Flutter projects.

So, explore freely among Redux, BLoC, and Provider, and as you do, let WiseGPT assist you in spinning splendid state management stories. Want to discuss more on this or anything Flutter? Always here, always ready. Until next time, happy Fluttering! 💙

Frequently asked questions

Q: What is the main architecture of Flutter?

Flutter doesn't enforce any specific architecture pattern. However, some popular patterns among Flutter developers include Redux, BLoC, and Provider. Depending upon the complexity and requirements of your app, you can choose the architecture that fits best, a critical decision that affects the maintainability, scalability, and overall success of your application.

Q: What is the best backend for Flutter in 2023?

The "best" backend really depends on your project's specific needs. That being said, Firebase is undoubtedly one of the most common backends for Flutter due to its ease of use, scalability, and strong integration with Flutter. Other backend options could be Node.js, Python with Django or Flask, or Java with Spring Boot, among others.

Q: Is BLoC similar to Redux?

Both BLoC and Redux are state management libraries, but they follow different concepts. BLoC uses Streams for state management and separates UI from business logic with the help of Sinks and Streams making it ideal for stream-based applications. Redux, on the other hand, follows a unidirectional data flow and maintains the application state in a single immutable data structure, making state changes predictable.

Q: Why do we need Provider in Flutter?

Provider is a convenient way to manage and access state in your Flutter application. It wraps around InheritedWidget (a complex part of Flutter framework) in a simple to use interface, allowing for easy state management, especially in larger applications. Moreover, it allows for efficiently distributing data down the widget tree and rebuilding only the necessary widgets when the state changes.

Q: What is the future provider in Flutter?

FutureProvider is a specific type of provider in Flutter that works with Future. It fetches data asynchronously, and when the data arrives, the UI gets updated. An application might use FutureProvider when it needs to fetch data from a network service or database, which could take some time and shouldn't block the user interface from loading.

Frequently asked questions

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