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Flutter mobile app development

Flutter Mobile App Development Services

We build Flutter mobile apps for iOS and Android: an MVP in 3 months, a transparent budget, and an architecture designed for future product growth.

Projects Delivered

Certified Engineers

Countries with Clients

Expert Flutter Development Services

ZentixSoft provides Flutter mobile application development services that cover the entire product, not just its screens. We have Flutter mobile applications running in production, so our experience goes beyond listing the technology in our stack. One team handles the architecture, backend, App Store and Google Play release preparation, and support after launch. After discovery, you get an agreed scope of work and estimates for the timeline and budget. You see working builds from the first sprints instead of waiting until the end of the project for a demo. We plan MVP releases around priorities, so the first version goes live on time even when plans change.

Honest Advice on Flutter

If Flutter isn’t right for your product, we’ll tell you before you start spending on development.

Store Requirements From Day One

We account for App Store and Google Play requirements from the first sprint to reduce the risk of build rejection and review delays.

Partners Long After Launch

Our average partnership lasts 30 months. After launch, we update your mobile app for new OS versions, optimize performance, and add features.

Custom Flutter Mobile Application Development Challenges We Solve

We help you release updates faster, integrate new native modules, and expand to new platforms by reducing architectural limitations where Flutter is a good fit.

Challenge

At the start, clients often have only a rough estimate, with no clear scope or understanding of what affects the final budget.

Risk

The budget may not cover the planned MVP, and the launch date may slip.

Solution

We provide the scope, timeline, and budget range before you sign the contract and development begins. We split the MVP into releases based on priorities.

Challenge

The iOS version falls behind Android because two teams build every feature twice.

Risk

You pay for development twice, while users get two different products.

Solution

One team maintains a shared codebase for iOS and Android to keep features and releases aligned across both versions.

Challenge

The mobile application built by your previous contractor runs slowly on older Android phones and crashes after updates.

Risk

Crashes hurt user retention, and negative reviews lower your mobile app store ratings.

Solution

We test on real devices used by your target audience, fix the causes of crashes, and improve performance.

Challenge

After the MVP, every new feature breaks two existing ones, and the developers suggest rewriting everything from scratch.

Risk

A year later, you pay for the same product again.

Solution

We agree on the architecture before development starts. A modular structure and automated tests let us add features without rewriting the core.

Challenge

A week before launch, Apple rejects the build because nobody checked the store requirements.

Risk

The release slips by weeks, and the marketing campaign has to be rescheduled.

Solution

We account for App Store and Google Play requirements from the first sprint and prepare store documentation alongside development.

Challenge

After release, the contractor disappears, and nobody wants to take over undocumented code.

Risk

A new iOS version comes out, the mobile app stops working, and there is nobody to fix it.

Solution

We document the code and support your mobile app after launch, updating it for new OS versions, monitoring crashes, and adding features.

Challenge

Your CTO doubts whether Flutter can meet the product’s requirements, but every agency says “of course.”

Risk

Overlooked platform integrations add work and delay the release.

Solution

During estimation, we check your requirements against Flutter’s limitations and recommend native development if it is a better fit.

0107

Our Flutter Application
Development Services

Need to test an idea with an MVP, expand to new platforms, or give an existing app a fresh start? Our Flutter mobile application development services cover development, migration, and integrations to support your product’s next step.

Flutter MVP Development

We launch the first version of your product on iOS and Android from a single development codebase:

identify the features essential for launch;
prioritize the remaining features for later releases;
build an MVP with room to scale without major rework;
prepare the mobile app for a coordinated release on the App Store and Google Play.

Flutter Web and Desktop Apps

Migration to Flutter

Integrations and Native Modules

Flutter Apps for IoT and Wearables

Flutter App Audit and Rescue

Need a working Flutter product, not another pitch?

Our team handles the full Flutter development cycle, from the first sprint to release, so you can get real feedback as soon as possible.

Custom Flutter App
Development Services

When your application gives you a competitive edge, an off-the-shelf solution can limit its growth. Our custom Flutter development services focus on building a product around your business processes and goals.

Logic and integrations built around your processes

During development, we design the data model, roles, and workflows around your processes and user needs, and connect the application to the CRM, ERP, payment services, and internal APIs you need.

Modular architecture for product growth

We design the architecture to make adding features easier and reduce the need for major rework as your product grows.

Code and ownership rights defined in the contract

We specify the terms for transferring code, documentation, and intellectual property rights in the contract, so you can continue developing the product with your own team or another technical partner.

Flutter vs React Native
vs Native Development

Shared code or separate development for each platform? We compare Flutter, React Native, and native development in terms of timelines, budget, interface, and trade-offs to help you choose the right approach for your product.

Criterion

Flutter

React Native

Native (Swift / Kotlin)

Best suited for

Business apps for iOS and Android

Teams with strong JavaScript expertise

Products with demanding graphics and deep hardware integration

Timeline and budget

Usually faster thanks to shared code

Usually requires more time and budget

Interface

Consistent across platforms or adapted to each

Based on native components

Fully native on each platform

Main trade-off

Platform-specific code for certain integrations

Native modules for certain integrations

Separate development and maintenance for two versions

When We Don’t Recommend Flutter Application Development

Flutter isn’t always the best fit for a product. We explain the technical trade-offs during the estimation stage.

Complex 3D or AR is central to the product

For intensive 3D rendering and AR, we consider native development or a specialized engine.

The product depends on the latest platform APIs

New APIs may require custom native code if existing Flutter plugins don’t support them yet.

The product is built around one platform’s ecosystem

Apple Watch apps, system widgets, and deep integrations require separate native implementations.

Your native development team will handle maintenance

If your team doesn’t plan to learn Dart and Flutter, a native stack may make ongoing maintenance easier.

Cost of Flutter App Development

The cost of a Flutter app development depends on its features, integrations, backend, and design. We estimate the development budget after discovery.

Scope of the First Release

Every additional feature adds work. We include only what is essential for launch in the first release and plan the rest for later releases.

Backend and Integrations

The backend development, payments, CRM, and external services are a separate part of the budget. We include them in the development estimate from the start to avoid surprises halfway through the project.

Design

Ready-made Material and Cupertino components usually cost less to implement than custom components and animations. We add custom elements where they help users complete key actions.

Advantages

Why Choose ZentixSoft
for Flutter Development

We handle the full development cycle, from discovery to ongoing support, reducing development risks and preparing your product for real-world use.

Clients Come Back

55% of clients return with new projects or work with us long-term.

Industry Expertise

100+ mobile projects across FinTech, HealthTech, EdTech, SaaS, and eCommerce. Our Flutter mobile app development accounts for your industry’s use cases and regulatory requirements before development starts.

Security by Default

We plan data protection from the start, including encryption, access control, and biometrics, based on the product’s needs and applicable requirements.

Faster Delivery

Our reusable components and proven architectures cut development time by up to 30% without compromising quality, both in Flutter development and related areas.

Communication SLA

We define response times in the SLA and provide regular reports on project progress.

Flexible Team Size

We scale the team up or down to meet project needs under agreed terms

How We Build a Flutter App: Our Development Process

We agree on a clear MVP scope before Flutter application development starts, show you progress regularly, and test on different devices before release.

Discovery

We review your product goals, users, and requirements, then agree on the MVP scope, estimated timeline, and budget before application development starts.

Architecture and design

We agree on the screen structure, state management, backend, and design. At the end of this stage, you receive a clickable prototype.

Development in sprints

Every two weeks, we deliver a new build you can install on your phone to check progress.

Testing

We use automated tests and manual checks on agreed devices to identify crashes and verify how the Flutter app works on iOS and Android.

Release

We prepare Flutter app store listings and review materials, and coordinate the application release on the App Store and Google Play.

Support and ongoing development

We monitor crashes, update the app for new OS versions, and add features according to the roadmap.

Our team

The Team Behind Your Development

Our Flutter developers, designers, and QA engineers work together, with backend developers and DevOps engineers joining as needed. We handle the full delivery scope and can add 5+ engineers to the team within 1 to 2 weeks.

CEO
Agness
CTO
Andrew
HRD
Yevhenii
Project Manager
Olha
Full Stack Developer
Dmytro
Full Stack Developer
Marko
Team Lead
Yehor
Content Lead
Maksim
Project Manager
Yuliia
BDM
Pavlo
Project Manager
Olga
Full Stack Developer
Yurii
Full Stack Developer
Vitalii
Backend Developer
Maks
Team Lead | DevOps
Oleg
Team Lead | DevOps
Oleg
QA Engineer
Elina
Full Stack Developer
Oleksandr
Recruiter
Oksana
CSO
Olga
CMO
Solomiya
Project Manager
Yeva
Full Stack Developer
Anastasiia
Tender Manager
Yurii
Head of Delivery
Kristina
UI/UX Designer
Vladyslav
Business Analyst
Olena

Technology Stack for Flutter Mobile Development Services

The stack we use for Flutter application development with different performance, security, integration, and scaling requirements.

Mobile development

Flutter

Dart

State management

Bloc

Riverpod

Native modules

Swift

Kotlin

Backend development and cloud

Node.js

Firebase

AWS

Testing and release

Automated Testing

CI/CD

App Store Connect

Google Play Console

Monitoring

Sentry

Crashlytics

Companies That Trust Us

0106

They adapted quickly to changing priorities

The team quickly understood our goals and translated them into practical solutions. Their ability to adapt and move fast made the collaboration smooth and highly productive.

Joseph F.

Ozeaon | Portugal

Joseph F.

Ozeaon | Portugal

Responsiveness and dedication

Responsiveness and dedication to delivering high-quality services were outstanding.

Maria А.

ARGUNOVA | Ukraine

Maria А.

ARGUNOVA | Ukraine

Worked in sprints

Zentix delivered their development work on time, which was an excellent start for the client. The team worked in sprints, updated the client weekly, and delivered tasks on schedule.

Andrew R.

RaDevs | Estonia

Andrew R.

RaDevs | Estonia

The team delivered exactly what we needed

The team delivered exactly what we needed — high-quality solutions and smooth collaboration from start to finish.

Alex L.

Wavory | Cyprus

Alex L.

Wavory | Cyprus

Their e-commerce expertise made a real difference

Zentix helped us build and launch our e-commerce platform with great attention to detail. The team was responsive, professional, and easy to work with throughout the entire process.

Amir B.

Servicom | Sweden

Amir B.

Servicom | Sweden

They delivered great results and provided useful support throughout the project

Zentix's work met the client's expectations. The team provided timely deliverables and professional responses throughout the engagement. Their daily online meeting, constant updates on the project's progress, and excellent results were remarkable. Zentix approached tasks promptly and creatively.

Andrey H.

Bestclevers | UK

Andrey H.

Bestclevers | UK

Ready to Start Your Flutter Project?

Share your idea, and we’ll run discovery and provide a complete development roadmap, budget, and timeline for your MVP.

FAQ

What is Flutter, and why is it used for mobile apps?

Flutter is Google’s SDK for building iOS, Android, web, and desktop apps from a single Dart codebase. For businesses, shared code can shorten application development timelines while allowing the Flutter app to be adapted to each platform.

Is Flutter still relevant in 2026?

Yes. Google actively develops Flutter, its ecosystem of packages and tools is mature, and major companies use it in production. The question is whether it suits your product, rather than whether the framework is still active. We assess that during estimation.

Does Google still own Flutter?

Yes. Flutter is an open-source project developed by Google. It is distributed under an open-source license, so the code remains available regardless of any individual company’s plans.

How long does Flutter app development take?

One of our MVP projects, Meet Up, went from research to launch in about three months. A product with multiple user roles, complex integrations, or backend development may take longer. We provide a specific timeline after discovery.

Can you migrate our native or React Native app to Flutter?

Yes. We can plan a phased migration, module by module, to minimize disruption to the app’s current operation. Before removing the old code, we compare the new version’s behavior, data, and performance with the original.

Can we hire Flutter application developers for our team instead of commissioning a project?

Yes. With Team Extension, our engineers join your team and follow your processes. Dedicated Team is suitable if you need a separate team working exclusively on your product. Fixed Scope suits projects with an agreed scope, timeline, and budget. We can start within 5 days.

Do Flutter apps perform worse than native apps?

For many business apps, performance differences aren't critical, but it depends on the use case. Flutter works well for typical business interfaces, while demanding graphics, AR, deep system integrations, or the latest platform APIs may make native development a better choice.

Will AI replace Flutter developers?

AI currently helps Flutter developers write boilerplate code, prepare tests, and refactor code, but engineers still need to review the results. AI changes how developers work, but it does not remove the need for engineering accountability.

What do you need from us to get started?

A description of what the application should do, which platforms it needs to support, and whether a backend already exists. That is enough for our Flutter mobile app development team to prepare questions and plan discovery. Based on the findings, we will agree on the scope, timeline, and budget range.