Top 18 Financial Apps Built with Flutter

A few years ago, Flutter was often seen as a promising – but still young – technology. It was mostly used by startups, MVPs, and smaller digital products where speed mattered more than long-term scale. That’s no longer the case.

As the ecosystem matured, Flutter proved it could handle much more than early-stage apps. Today, it’s used to build production-ready products – including solutions for industries where performance, reliability, and security are important. Companies building complex systems in sectors like finance, insurance, or healthcare increasingly treat Flutter as a viable option rather than an experiment.

Fintech is one of the best examples of this shift.

Modern financial products need to move fast, deliver consistent experiences across platforms, and meet strict security and regulatory requirements at the same time. Flutter fits well into this environment – it lets teams focus on the product itself instead of platform-specific challenges, while still delivering scalable, high-quality apps.

That’s why fintech and banking companies are adopting Flutter – not just for prototypes, but also for user-facing products used at scale.

In this guide, you’ll find:

• Examples of Flutter apps built in the fintech industry
• When Flutter may be the right choice for fintech app development
• The key benefits of Flutter in fintech from a business perspective
• What features modern fintech apps need to stay competitive
• What the future of Flutter in fintech looks like

Let's start with real-world examples that show how Flutter is already being used in fintech.

Top 18 real fintech apps built with Flutter

Below, you'll find real-world examples of fintech products built with Flutter – from traditional banks to modern digital platforms and crypto solutions.

1. Credit Agricole Bank Polska

Credit Agricole Bank Polska, part of the global Crédit Agricole Group, decided to completely rethink its mobile banking experience. Instead of iterating on an existing solution, the bank chose to build a brand-new app from scratch. To achieve this, they partnered with LeanCode and selected Flutter as the core technology.

The result is CA24 Mobile, a modern banking app designed for retail customers, offering a seamless and consistent experience across platforms. Flutter enabled the team to build a reactive, design-driven product while maintaining a unified codebase. Despite the scale and complexity typical of banking systems, the MVP was delivered in around 12 months. With a large engineering team, this became one of the biggest Flutter implementations in fintech.

Read the entire story on how LeanCode developed one of the biggest financial applications with Flutter. Check our CA24 Mobile case study!

2. Millennium Bank

Millennium Bank has consistently been investing in digital banking, with a strong focus on mobile as the primary channel for both individual and business customers. A key part of this strategy was the launch of a new mobile app for entrepreneurs – built from scratch and designed to fully digitize cooperation between the bank and business clients.

The app was developed with a strong emphasis on usability, personalization, and real customer feedback. The features were tested directly by users, allowing the bank to refine the experience before scaling.

3. Nubank

Nubank is one of the largest digital banks in the world and a leading fintech in Latin America, serving tens of millions of users across multiple countries.

As Nubank scaled rapidly, its engineering teams faced growing complexity with native development. The company adopted Flutter as part of its mobile strategy to unify development and speed up product delivery. This shift enabled faster feature launches and improved scalability.

4. Google Play

Google Pay is a global digital wallet platform used by millions of users across many countries. It allows users to pay online and in stores, manage expenses, and access financial services.

As the product scaled globally, maintaining separate Android and iOS codebases became a challenge. To improve efficiency, Google rebuilt Google Pay using Flutter. This simplified development and enabled faster iteration.

5. Virgin Money

Virgin Money is a UK-based financial services provider that set out to unify multiple mobile apps into a single, consistent customer experience.

To achieve this, the company adopted Flutter and moved away from maintaining separate iOS and Android apps. This allowed teams to streamline development, reduce duplicated work, and improve efficiency.

6. Tide

Tide is a UK-based business banking platform designed for small businesses, freelancers, and SMEs. Its mobile-first approach puts the entire banking experience – from account setup to daily financial management – directly in the hands of users.

Flutter is used as part of Tide's mobile engineering stack, helping deliver a consistent experience across platforms.

7. ING Bank Śląski

ING Bank Śląski is one of the leading banks in Poland, known for its strong focus on digital banking and the user experience.

Flutter is used in ING Business Mobile, the bank's app for business customers. It enables teams to work on a largely shared codebase, simplifying maintenance and allowing updates to be rolled out across platforms more efficiently.

8. Skandia

Skandia is a Swedish financial institution offering insurance, banking, and investment services. As part of its digital transformation, the company rebuilt its mobile experience using Flutter to improve quality, performance, and overall user experience.

From a business perspective, Flutter enabled Skandia to improve performance while simplifying how new features are delivered. By moving to Flutter, the company reduced development complexity and created a foundation for faster iteration and continuous product improvement which helped them respond more quickly to market changes and customer needs.

9. SoFi

SoFi is a US-based digital bank building a financial super app that combines banking, investing, lending, and money management. To scale its mobile platform, SoFi adopted Flutter to unify development and increase delivery speed.

Flutter supports SoFi's ongoing architecture transformation, especially in its Money product, where the company is evolving its banking core and enabling new products like CDs. Combined with AI-driven workflows, this allows SoFi to release updates faster, scale engineering efficiently, and continuously expand its product offering.

10. Solflare

Solflare is a non-custodial crypto wallet built for the Solana ecosystem, enabling users to manage tokens, stake assets, and interact with decentralized applications. As the product expanded across platforms, the team adopted Flutter to unify development and deliver a consistent user experience.

Solflare focuses on combining advanced blockchain functionality with a clean, intuitive user experience, making Web3 accessible to both beginners and advanced users.

11. Bread Financial

Bread Financial is a US-based financial services provider focused on personalized payment, lending, and savings solutions. Its core offerings include private label and co-brand credit card programs, installment lending, and direct-to-consumer financial products.

The company continues to invest in digital experiences and mobile platforms as part of its broader product strategy, supporting customer access to financial services across channels.

12. Bilderlings

Bilderlings is a fintech platform offering multicurrency accounts, global payments, and card solutions for both individuals and businesses. The product is designed to simplify international financial operations, allowing users to manage accounts, exchange currencies, and perform transfers across more than 150 countries.

According to publicly available case studies, Flutter has been used in the development of Bilderlings' mobile application as part of a cross-platform approach, helping deliver a consistent user experience across devices.

13. Bancolombia

Bancolombia is one of the largest financial institutions in Latin America, serving tens of millions of customers across Colombia and several other countries.

Bancolombia has used Flutter as part of its mobile development approach for digital banking products. One example was "A La Mano" (no longer supported), a mobile app used by millions of customers. Engineering publications from Bancolombia indicate that the app was built with Flutter to support scalability and faster development.

14. ProWallet

ProWallet is an instant payment solution designed for the construction industry, focused on digitalizing and unifying payment processes across the sector. The app aims to reduce costs, simplify workflows, and accelerate transactions by bringing all financial operations into a single digital system.

ProWallet enables users to load funds, send and request payments, and track all wallet activity with detailed transaction history and real-time notifications. Additional features like notes, image attachments, and advanced search make it easier to manage and document financial operations.

15. 3S Money

3S Money is a global fintech platform offering international business accounts and payment solutions. Its core value lies in enabling companies to send, receive, and manage payments across multiple currencies and countries efficiently.

The mobile app, built with Flutter, focuses on delivering a secure and user-friendly experience for complex financial operations. Designed for business users, it supports features like multi-account management, currency exchange, and payment workflows, all within a streamlined interface optimized for everyday use.

16. AJ Bell

AJ Bell is one of the UK's largest investment platforms, and with its app Dodl, it set out to make investing more accessible, especially for first-time investors. The goal was to remove complexity, reduce jargon, and create a simple, user-friendly entry point into long-term investing.

Built with Flutter, Dodl focuses on delivering a clean, intuitive experience that lowers the barrier to entry for new users. The app combines core investment products like ISAs, pensions, and general investment accounts into a streamlined interface, helping users start investing with confidence.

17. Ueno Bank

Ueno Bank is a digital banking institution in Paraguay that has rapidly expanded its market position. In 2024, the bank merged with Vision Banco, increasing its balance sheet by 4.5x and reaching nearly two million clients, making it one of the largest customer bases in the country. Its mobile app, built with Flutter, plays a central role in delivering banking services at scale. The app supports everyday financial operations while maintaining a modern, consistent user experience.

18. Xelion

Dom Inwestycyjny Xelion is a Polish investment firm specializing in brokerage services and investment advisory. Its mobile app, Xelion ONE, is designed to give users continuous access to their investment portfolio and financial data in a secure, mobile-first environment.

The app focuses on providing real-time visibility into investments – users can monitor portfolio performance, track transaction history, authorize orders, and receive market alerts directly from their phone.

Why do fintech companies choose Flutter?

Fintech companies operate in a highly demanding environment where speed, security, scalability, and user experience are all important. The technology behind the product directly impacts how fast you can deliver, how well you scale, and how securely you handle sensitive data.

Why, then, are more fintech companies choosing Flutter for their products? Here are the key reasons.

Faster development with modern (agentic) workflows

In fintech, efficiency is key, but never at the cost of code quality or data security. Flutter supports fast delivery while maintaining high standards, especially when combined with modern, agentic workflows. With approaches like MCP (Model Context Protocol), teams can connect AI tools directly to their codebase, design system, and testing processes.

Instead of manually writing and running tests, developers and QA engineers can delegate a large part of this process to AI. The system can detect issues, iterate on tests, and help debug problems much faster than traditional workflows.

To be more specific, there are already tools built on top of this approach. One example is Patrol MCP, which allows AI to interact with a mobile app almost like a human tester would. It can open the app, navigate through screens, perform actions, run end-to-end tests, and analyze what’s happening in real time.

In practice, this leads to:

• shorter feedback loops
• less manual QA work
• faster and more reliable releases

Focus on the product, not platform differences

In fintech, product quality is what drives adoption, not the technology behind it.

Building separate apps for iOS and Android often means duplicating work, maintaining two codebases, and dealing with platform-specific inconsistencies. This can slow teams down and shift focus away from what really matters: delivering value to users. Flutter helps reduce this friction.

With a single codebase, teams can build and maintain one product experience across platforms. This means:

• less time spent on platform-specific issues
• more time improving core features
• faster alignment between product, design, and engineering

Instead of solving the same problems twice, teams can focus on building better financial products.

Ability to deliver fast updates

In 2026, fintech products are expected to evolve continuously. This not only includes new or improved features, but also compliance changes, pricing updates, and security patches. This is where Flutter makes a noticeable difference.

Because teams operate on a single codebase, they can integrate updates into a unified release pipeline instead of coordinating separate platform releases. This works especially well with modern CI/CD setups, where builds, tests, and deployments are automated end-to-end.

A typical setup might include:

• automatic builds for iOS and Android after every merge
• running unit, integration, and end-to-end tests (e.g., with Flutter + Patrol)
• security checks and static analysis

Because everything runs on one shared codebase, the entire process stays consistent and is easier to maintain. In practice, this means faster releases, fewer coordination issues, and a shorter path from idea to production.

Unifying the design system

Different button behaviors, slightly changed layouts, or inconsistent navigation patterns across platforms can quickly create friction. In financial apps, that friction can translate into lower trust and more user errors.

In Flutter, instead of maintaining two parallel implementations of the same design system, teams work with one shared set of components. What designers define is much closer to what users actually see – on both iOS and Android.

Over time, this changes how teams operate. Design updates don't require platform-by-platform adjustments. New features can build on existing components instead of starting from scratch. Product teams spend less time aligning details and more time improving the experience itself.

Improving accessibility

Financial products need to be usable by everyone, including people with visual, motor, or cognitive impairments. In practice, this can get complicated. Supporting screen readers, dynamic text sizes, contrast requirements, and clear navigation across two separate platforms often leads to inconsistencies and additional effort.

Flutter comes with built-in accessibility support that works consistently across iOS and Android. Things like semantic labels, screen reader compatibility, and scalable UI elements can be implemented once and behave predictably across platforms.

This makes it easier to:

• meet regulatory and compliance requirements
• ensure consistent accessibility across platforms
• improve usability for all users, not just those with specific needs

Integration with fintech APIs and financial services

Behind every banking app, wallet, or investment platform, there's a network of external services – payments, KYC, fraud detection, credit scoring, and open banking APIs. The ability to integrate with them efficiently often defines how fast you can launch and scale.

Flutter supports integration with REST or GraphQL APIs, but what makes a bigger difference in practice is the ecosystem of packages that simplify working with external services. These allow teams to integrate payment providers, identity verification, or financial APIs more quickly without building everything from scratch.

In real projects, this typically includes:

• payment integrations (e.g., card processing, wallets, transfers)
• KYC/AML providers for user verification
• open banking APIs (account aggregation, transaction data)
• fraud detection and risk assessment services
• third-party financial data providers

What matters from a business perspective is how quickly and reliably these integrations can be delivered.

Scalability for growing fintech platforms with large-scale app architecture

Most fintech products don't stay simple for long. What starts as a single app – payments, banking, or crypto – often evolves into a much larger platform with multiple domains: cards, loans, investments, analytics, internal tools, and more. At that point, one of the biggest challenges is keeping the system scalable and maintainable.

Flutter can be well-suited for this kind of growth. Modern Flutter architectures are typically based on modular and feature-based design, where the application is organized around independent features (e.g., onboarding, payments, accounts), each containing its own UI, business logic, and data handling. This helps avoid large, tightly coupled codebases and makes the system easier to scale over time.

In practice, this means teams can:

• develop features independently without breaking other parts of the app
• organize code into modules (e.g., onboarding, payments, accounts)
• reuse shared logic across multiple products or platforms
• test and maintain the system more efficiently

What’s important from a business perspective is that this structure allows the product to grow without slowing down delivery. Instead of accumulating technical debt with every new feature, teams can continue adding new capabilities in a controlled way.

Cost efficiency for fintech startups and scale-ups

The cost of app development doesn’t end with app release. Maintenance, updates, scaling the backend, adding new features, and supporting multiple platforms can quickly multiply the total cost of ownership. In many cases, companies spend years paying for decisions made at the beginning.

Flutter changes how that cost evolves. By working with a single codebase, companies avoid duplicating development across iOS and Android.

What's changing in 2026 is that this efficiency is further amplified by AI. With AI-assisted development and agentic workflows, teams can automate parts of coding, testing, and QA. Tasks that used to take significant time – like writing test cases, debugging, or validating flows – can now be partially automated. Combined with Flutter's unified architecture, this can create a more efficient delivery model.

From a business perspective, this means:

• lower total cost of ownership, not just lower initial cost
• more efficient use of development resources
• the ability to invest more in product growth instead of infrastructure

For startups, that can mean a longer runway. For scale-ups, it means scaling the product without increasing costs at the same rate.

Support for secure mobile development

In fintech apps, every decision – from authentication to data storage – has to meet strict standards. At the same time, security can't slow down development or negatively impact user experience. That balance is difficult to achieve.

Flutter works on top of native platforms, so teams can use proven security mechanisms like biometrics, secure storage (Keychain/Keystore), encrypted communication, and integrations with tools like RASP or fraud detection systems.

Because everything is built in a single codebase, security implementations can stay more consistent across platforms, which helps reduce the risk of gaps or mismatches. In practice, this means teams can meet high security standards without significantly slowing down development.

When Flutter is the right choice for your fintech app

Flutter is a strong choice for fintech companies in specific scenarios where speed, scalability, and efficiency are important. Below are the most common use cases where Flutter can deliver value:

• Launching cross-platform banking apps: Flutter is well-suited for building banking or payment apps that need to run on both iOS and Android from day one. A single codebase allows teams to launch faster, reduce development time, and deliver a consistent user experience across platforms.
• Scaling fintech startups with limited engineering teams: Flutter enables smaller teams to build and maintain complex fintech products without needing separate iOS and Android developers. This introduces more versatility within the team, where developers can work across both platforms more easily.
• Building fintech products with frequent feature releases: Flutter supports fast iteration cycles, making it well-suited for products that require regular updates. Teams can release new features, bug fixes, and compliance updates faster because changes are implemented once and deployed across platforms.
• Supporting multiple fintech products within one ecosystem: Flutter allows companies to reuse code, design systems, and architecture across multiple apps. This is especially useful for platforms that offer multiple products, such as banking, payments, and investments.
• Modernizing legacy banking mobile apps: Flutter supports flexible migration approaches, such as rebuilding from scratch, using add-to-app, or combining both. This allows teams to modernize gradually, release features in parallel, and avoid risky full rewrites.

What's the future of Flutter in fintech?

Flutter’s role in fintech is already established, but what’s more interesting is where it’s heading next. The trends below show how the ecosystem is evolving and why more financial companies are treating Flutter as a long-term strategic option.

• High-performing AI teams with agentic workflows: Fintech teams are increasingly adopting AI-driven development. With MCP and agentic workflows, AI can write tests, run E2E scenarios, and assist debugging. This reduces manual QA effort and shortens delivery cycles, allowing teams to ship faster without compromising reliability.
• Growth of cross-platform in regulated industries: Cross-platform is becoming standard even in regulated sectors. More banks and fintech companies are adopting Flutter each year for production apps, not just MVPs. The need for faster delivery, consistent UX, and lower costs is driving adoption across compliance-heavy environments.
• Growing ecosystem of fintech SDKs and plugins: The Flutter ecosystem is rapidly expanding, including fintech-specific tools. More SDKs now support payments, KYC, fraud detection, and open banking. This reduces integration effort and speeds up development, allowing teams to build complex financial products more efficiently.
• Increasing adoption by enterprise financial institutions: Flutter is no longer limited to startups – large financial institutions are actively using it in production. Banks like ING Bank Śląski, Credit Agricole Bank Polska, and global players like Nubank use Flutter to power user-facing apps at scale. This signals Flutter’s maturity and its readiness for large-scale, mission-critical systems.
• Expansion of embedded finance: Embedded finance is growing rapidly, with financial services integrated into non-financial apps. Flutter supports this by enabling fast development and seamless integrations with payments, wallets, and lending services, making it easier to build financial features directly into digital products.
• Flutter beyond mobile: Fintech products are expanding beyond mobile. Flutter makes it possible to build web dashboards, admin panels, and desktop apps using shared logic and UI. This allows companies to create unified ecosystems where users and internal teams access the same platform across devices.

Check the interview with Craig Craig Labenz, Developer Relations Engineer at Google, to learn more about the future of Flutter:

Summary

Flutter has moved far beyond its early use in MVPs and startup projects. Today, it powers real fintech products – from fast-growing startups to large financial institutions – proving it can handle the demands of security, scalability, and performance.

For decision-makers, the value is clear. Flutter helps teams build faster, reduce costs, and maintain consistency across platforms, while still supporting complex integrations and large-scale architectures. Combined with modern AI workflows and a growing ecosystem, it becomes a strong foundation for long-term product development.

At the same time, its flexibility makes it suitable across different stages – whether you’re launching a new product, scaling an existing one, or modernizing legacy systems.

The direction is clear: Flutter app development is becoming a standard choice for fintech teams that want to move fast without sacrificing quality or control.