Somnio Software Logo
What We Do
Services
Managed Product DeliveryCo-Managed Delivery TeamsStaff Augmentation
Product Solutions
Product Strategy & DesignCustom Software DevelopmentAI EnablementProduct Scaling & EvolutionProduct Security & ComplianceIndustry Solutions
Capabilities
Product StrategyProduct DefinitionProduct DesignProduct GrowthFlutter DevelopmentMobile DevelopmentWeb DevelopmentBackend DevelopmentQA AutomationDevOps & CloudAI EngineeringData & AnalyticsSecurity EngineeringProduct MaintenanceIT Recruiting Services
Explore everything we do →
Flutter
Flutter
Flutter EverywhereMigration & ModernizationGenUIFlutter Expertise
Explore Flutter →
AI
AI
AI Consulting & StrategyAI in ProductAI Agents & AutomationGenerative AI Solutions
Explore AI →
Our Work
Our Work
IndustriesSuccess Cases
Resources
Resources
Somnio SolutionsOpen SourceTutorials & TalksDownloadablesThe CTO Lounge
Explore resources →
About
About
CompanyPress & NewsCareers
Blog
Let’s talk
Flutter Migration & Modernization

Stop maintaining three codebases. Start shipping one

Separate teams for iOS, Android, and Web slow you down and cost more than they should. We consolidate your stack into one Flutter codebase, on the timeline that fits your business.

Start with a free codebase audit
Somnio engineer working on code across several monitors

What a split stack actually costs you

Three codebases don't just mean three repos. They mean three release cycles, three budgets and three versions of the same product.

Slower delivery

Parallel teams duplicating effort across platforms drags out every release.

Higher cost

Separate codebases, separate toolchains, separate people to maintain each one.

Disjointed experience

Features ship on one platform months before the other, and it shows.

Two ways in

Not every team needs to retire their native apps. Pick the path that matches where your product is today.

Full Migration

For

Teams ready to retire native codebases entirely.

What it includes
Full rebuild in Flutter
Feature parity audit
Phased cutover
Old codebase retirement
Timeline shape

Staged by module, not a single big bang.

Add-to-App

For

Teams with a working native app who want Flutter's speed without a rewrite.

What it includes
Flutter module embedded inside your existing iOS/Android app
Migrated screen by screen
Timeline shape

Ships new features in Flutter while the native shell stays live.

Flutter Migration & Modernization

The Flutter Convergence Path

Every engagement starts fragmented across platforms and teams. This is how it converges into one Flutter codebase.

1

Assess

Audit current codebases and technical debt. Full migration or add-to-app.

2

Pilot

One real module migrated first, live in production.

3

Converge

Full migration or add-to-app, module by module, into one codebase.

4

Optimize

Performance, testing coverage and architecture hardening.

5

Scale

Team enablement, plus a path to add more platforms later.

Diagram of several codebases converging into one Flutter app that then ships to every platform

Already on Flutter, but something's off?

A Flutter codebase built without the right architecture creates the same problems Flutter is supposed to solve. We audit the codebase, fix the architecture and performance issues, and hand back a Flutter app your team can actually build on.

Code health audit
Performance profiling
Architecture cleanup
Testing coverage review
Request a code health audit
Two Somnio engineers reviewing code together on a laptop

Success cases

Wrist Goal
Entertainment

Wrist Goal

Wrist Goal is a smartwatch app delivering live football scores and match events to Huawei wearables, built by Somnio and launched natively on HarmonyOS NEXT with a template-based architecture ready to scale to future tournaments.

Read more
Mobile App Development
CAA Club Group of Companies (CCG)
Automotive

CAA Club Group of Companies (CCG)

We partnered with the Canadian Automobile Association (CAA) to elevate member services through technology, delivering a seamless experience across Ontario.

Read more
Full Product Development

What our clients say

Tosan Lee

“Their approach started with a Product Discovery phase, including user research, UI/UX design improvements, and technical assessments to ensure scalability. Their proactive work made a real difference in the project's success”

Read the whole review
Tosan Lee
Tosan Lee
Co-Founder, Tracer Golf
Auston Anon

“Somnio Software has delivered an MVP that meets the changing needs of AI users. They've communicated effectively, have been highly responsive, and their project management is excellent. Their developers have become thought partners.”

Read the whole review
Auston Anon
Auston Anon
CEO, Fusion AI

One codebase is closer than you think

Start with a free codebase audit

Ready to Start Your Journey?

Belén
Technical Business Developer

I would love to talk to you about your project or needs.

Fill in the form or send us an email to hello@somniosoftware.com

Schedule a call

Feel free to select a time at your convenience!

Let’s talk!

Got an idea? We’ve got the skills.

Fill out our contact form and we’ll get in touch!

Schedule a call

Feel free to select a time at your convenience!

Let’s talk!
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Questions worth asking

Still have some doubts?
No worries, here are some frequently asked questions that may help you.

Do we have to rewrite everything at once?

No. Add-to-app lets you keep your existing native app running while we build new features in Flutter inside it, screen by screen. You decide how far the migration goes and when, and every step ships to production on its own.

What happens to our existing native team during migration?

They stay. Native engineers know your product's logic and edge cases better than anyone, and that knowledge carries directly into Flutter. Our engineers pair with your team through the migration, so by the time the old codebases retire, your developers are already building in Flutter themselves.

How long does a typical migration take?

It depends on scope, not on Flutter. The variables that matter are how many screens you have, how much business logic is tangled into the UI layer, and whether you go full migration or add-to-app. We answer this precisely after the assessment phase rather than quoting a number before seeing the codebase.

Will our users notice the migration?

Only in the ways you want them to. Flutter renders its own interface, so we match your existing design exactly, or improve it if that's part of the scope. Users keep their accounts, their data and their app icon, and the app store listing stays the same.

Can you migrate from React Native or Xamarin, not just from native?

Yes. Migrations from React Native, Xamarin and MAUI are common, and in many ways more straightforward than native migrations, because those codebases already separate business logic from platform code.

What happens to our backend and APIs?

Nothing. A Flutter migration touches the client side of your product. Your backend, your APIs, your database and your infrastructure stay exactly as they are, which is what keeps the scope of a migration contained.

How does Flutter handle native features like camera, biometrics or push notifications?

Through platform channels and a mature package ecosystem, Flutter reaches everything the underlying OS exposes. Camera, biometrics, push, Bluetooth, background location and in-app purchases all run in production Flutter apps today, ours included.

Our Flutter app was built by another vendor and it's a mess. Can you fix it instead of migrating?

Yes, and it's a large part of what we do. A Flutter codebase built without the right architecture creates the same problems Flutter is meant to solve. We audit it, fix the architecture and performance issues, and hand back an app your team can build on.

Somnio Software Logo
Services
Managed Product DeliveryProduct Strategy & DesignStaff AugmentationWhat We DoAll services
Our work
IndustriesFintechHealthcareEducationEntertainmentSuccess Cases
About
CompanyFlutter ExpertiseCareersPress & NewsPrivacy PolicyCompany Presentation Brochure
Resources
Open SourceTutorials & TalksDownloadablesBlogThe CTO Lounge Episodes
Office
José Ellauri 1142
Montevideo, Uruguay
11300
Contact
hello@somniosoftware.comjobs@somniosoftware.com
+1 305-203-1734 - US
Clutch Award Top B2B Company 2022
Clutch Award Top B2B Company 2022Clutch Award Top B2B Company 2022Clutch Award Top B2B Company 2022Clutch Award Top B2B Company 2022Clutch Award Top B2B Company 2023Clutch Award Top B2B Company 2023Clutch Award Top B2B Company 2023Clutch Award Top B2B Company 2023Clutch Award Top B2B Company 2022The Manifest Award Top Flutter Developers 2021Clutch Award Top 1000 Companies Global 2022Clutch Award Top B2B Company 2023