App DevelopmentBest Flutter App Development Companies in 2026

The best Flutter app development company depends on your budget and how big a team you need. Very Good Ventures is the best-known Flutter-first firm and is priced for enterprise budgets. LeanCode and Somnio suit companies that need a larger dedicated team at lower rates. App369 suits startups that want fixed prices and to work directly with the developer. Before you talk to anyone, the free app cost calculator gives you a starting budget. App369 publishes this guide and is one of the options. It is based on public information, not an independent benchmark.

What a Flutter app development company is (and isn't)

A Flutter app development company builds apps with Google's Flutter framework, usually one Dart codebase for iOS and Android, often for the web too. This guide includes firms that lead with Flutter on their own website or show public Flutter work. Agencies that list Flutter as one of twenty frameworks are left out, as are freelance marketplaces. If you're still deciding on the framework, the Flutter vs React Native decision guide comes first.

How I compared these Flutter companies

I checked each company on October 22, 2026, using only what it publishes:

• Flutter-specific proof: open-source Flutter packages, Flutter case studies, or a flutter.dev consultants listing.
• Published pricing: minimum project size and hourly rate on Clutch, or prices on the company's own site.
• Track record shown publicly: Clutch rating and review count with the date read.
• Location and time zone: where the company says it is based.
• Fit: the buyer each firm's pricing and case studies point to.

I didn't hire these firms for a test project, review their code, or verify their own claims about team size and apps shipped. Companies are listed alphabetically. The order is not a ranking.

The best Flutter app development companies in 2026

1. App369, best for startups that want fixed prices from one Flutter developer

App369 is the studio that publishes this guide: one developer, Simon Dziak, in Miami, Florida. Flutter is his main mobile stack. He built and runs Workspace369, a Flutter app on iOS and the web with a Firebase backend, and maintains Flutter apps for clients. Prices are published: mobile apps from $9,000, web apps from $6,000, and fixed-price jobs from $450, such as a bug fix in an existing app. Simon's Fiverr reviews (5.0 from 126, read October 13, 2026) are on the reviews page.

• Strengths: published prices and an instant quote; you work with the person writing the code; Flutter and Firebase taken over and maintained.
• Limitation: one developer, so no large parallel team and limited capacity for several big projects at once.
• Best for: founders building a Flutter MVP, or businesses with a Flutter app that needs a new developer.

2. Invertase, best for Flutter and Firebase tooling and SDK work

Invertase builds open-source Flutter infrastructure: its site shows the FlutterFire CLI and Melos, a tool for managing multi-package Dart and Flutter repositories, and case studies including work on FlutterFire and for Canonical. That makes it the most specialized firm here for SDKs and developer tooling rather than consumer apps. Pricing isn't published; it offers a consultation. If your app depends on a Flutter plugin that has fallen behind iOS or Android, this is the kind of firm that maintains such plugins.

• Strengths: deep, public Flutter and Firebase engineering; well-known open-source tools.
• Limitation: focused on SDKs, plugins and maintenance more than full app builds, and its site doesn't state a headquarters city.
• Best for: companies that need a Flutter plugin, an SDK, or Firebase integration work at the framework level.

3. LeanCode, best for scale-ups that need a large dedicated Flutter team

LeanCode is based in Warsaw, Poland, and says it has 40+ dedicated Flutter developers. Its case studies include a Flutter banking app built by about 30 developers, and it offers setup and training for Patrol, a Flutter UI-testing tool. On Clutch it lists a $25,000+ minimum project and $50–$99 per hour, with a 5.0 rating from 40 reviews (read October 22, 2026). It also offers a free scoping workshop before quoting, which is a low-cost way to compare it with other firms.

• Strengths: a large Flutter-only bench; strong testing practice; mid-range rates for that depth.
• Limitation: Central European time zone, and its case studies lean toward enterprise and banking.
• Best for: funded companies that need several Flutter developers working in parallel.

4. Somnio Software, best for a nearshore Flutter team close to US hours

Somnio Software is based in Montevideo, Uruguay, and calls itself the first Flutter development company in Latin America, with 95+ people. Its site says its speakers have presented at Fluttercon and other Flutter conferences, and its CTO was a guest on the Observable Flutter podcast. On Clutch it lists a $10,000+ minimum project and $50–$99 per hour, with a 5.0 rating from 46 reviews (read October 22, 2026). Uruguay's time zone overlaps most of the US working day.

• Strengths: the second-lowest Clutch minimum here, after Walturn; nearshore hours; public Flutter community work.
• Limitation: much of its work is managed teams and staff augmentation, which suits ongoing development more than a small fixed-scope build.
• Best for: US startups that want a dedicated Flutter team in a nearby time zone.

5. Very Good Ventures, best for enterprises that want a top-tier Flutter team

Very Good Ventures says it built the first commercial Flutter app, in 2018. Clutch lists its headquarters in New York, with other locations in Evanston, Illinois and Warsaw, Poland. Its site says it has 120+ team members globally and a 100% remote workforce. It is a Google Cloud Partner and publishes open-source Flutter developer tools. On Clutch it lists a $100,000+ minimum project and $150–$199 per hour, with a 5.0 rating from 35 reviews (read October 22, 2026). Client logos on its site include Google, Nubank, The New York Times and Toyota Connected.

• Strengths: the most recognized Flutter-first brand; large clients; widely used open-source tooling.
• Limitation: the $100,000 minimum puts it out of reach for most startups and small businesses.
• Best for: enterprises and well-funded companies building a flagship Flutter app.

6. Walturn, best for early-stage startups that want a New York-listed Flutter studio on a small budget

Walturn lists Queens, New York, says it has seven years of Flutter work, and shows Flutter case studies including Tank Payments and Labocine. It works in two-week sprints from design research to launch. On Clutch it lists a $1,000+ minimum project and $25–$49 per hour, but no reviews yet (read October 22, 2026). Clutch also lists offices in Dubai and Islamabad, so ask where the developers sit. A low minimum makes it easy to start with a small paid project before committing to a larger build.

• Strengths: a New York office; the lowest published minimum and rates in this guide; a design-to-launch process.
• Limitation: no Clutch reviews yet, and its hours and project figures are self-reported, so ask for references.
• Best for: early-stage founders who want low hourly rates and a New York contact.

Side-by-side comparison

Which Flutter company fits your situation

How to choose a Flutter development company

1. Ask for live Flutter apps. Get App Store and Google Play links to Flutter apps the firm built and still maintains.
2. Ask who writes the code. Get names and seniority, and whether any work is subcontracted.
3. Check testing and upgrades. Ask how they test (unit, widget and integration tests) and how they handle yearly Flutter, iOS and Android upgrades.
4. Get a written scope before paying. The vendor evaluation checklist works with any firm on this list.
5. Plan for after launch. Make sure you own the code, the store accounts and the Firebase or cloud project. See App369's Flutter development service for what a handover should include.

For budgets, see Flutter app development cost and the comparisons Flutter vs Swift and Flutter vs Kotlin.

Get a price for your Flutter app

The instant quote gives a price range for your app in about a minute. Compare it with written quotes from at least one other firm on this list.