01
Flutter MVPs
Launch on iOS and Android at the same time from one codebase, test with real users, then grow the app without a rewrite.
FIG 01 · Flutter App Development
Flutter app development services: one codebase, every platform
iOS, Android and web apps built once in Flutter, with Firebase or custom back ends, payments, AI features and a store launch handled for you.
See how it works
FIG 02 · Quick answer
What does a Flutter app development company do?
Flutter is Google’s open-source UI toolkit for building iOS, Android, web and desktop apps from one Dart codebase. As a Flutter app development company, Elgrith designs, builds and launches Flutter apps with Firebase or custom back ends, payments, push notifications, offline mode and AI features, then publishes them to the App Store and Google Play and maintains them.
- Codebase for iOS, Android and web
- 1
- Projects delivered since 2015
- 1,000+
- Clients across the USA, UK and India
- 250+
- Your code and store accounts
- 100%
FIG 03 · Why it matters
Flutter, by the evidence.
From Flutter’s own showcase and the Stack Overflow Developer Survey 2025, including the number that argues for hiring specialists.
01
Google
Runs its own apps on Flutter
Google uses Flutter for apps including Google Pay, Google Earth, NotebookLM and Google Classroom.
Source: flutter.dev showcase(opens in a new tab)02
50%
Lower development costs at Whirlpool
In a case study on Flutter’s own showcase (Aug 2024), Whirlpool says it cut development costs by 50% with Flutter. That is Flutter’s claim, not a promise for every project.
Source: flutter.dev showcase(opens in a new tab)03
5.9%
Of developers use Dart
5.9% of Stack Overflow’s 2025 respondents use Dart, against 66% for JavaScript. Experienced Flutter developers are a smaller pool, so who you hire matters.
Source: Stack Overflow Developer Survey 2025(opens in a new tab)
FIG 04 · Definition
What is Flutter, and when is it the right choice?
Flutter draws its own UI with its rendering engine, so one Dart codebase looks and behaves the same on iOS, Android, web and desktop. Its strengths are one codebase, a consistent UI and smooth performance. Its limits are a larger app size than a minimal native app, some native APIs that need platform code, and weak SEO on the web.
| Flutter is a strong fit | Consider something else | |
|---|---|---|
| Product | iOS and Android apps that share most screens and logic | An app for one platform that leans on its newest native features |
| Design | A custom, branded UI that should look the same everywhere | Strict platform look-and-feel on each OS, screen by screen |
| Device features | Camera, maps, payments, push, Bluetooth through plugins or platform channels | Deep, constant use of native SDKs with no Flutter plugin |
| Web | App-like tools, dashboards and products behind a login | Marketing or content sites that must rank in search |
| App size | Most consumer and business apps | Instant apps or markets where every megabyte counts |
| Team | One team shipping both platforms together | Separate iOS and Android teams you already run |
When Flutter isn’t the right tool, we’ll say so, and build in React Native, native Swift and Kotlin, or Next.js for the web instead.
All app development optionsFIG 05 · What you get
Flutter app development services
From first prototype to store launch and beyond: one team, one codebase, every platform your users are on.
02
Cross-platform apps for iOS and Android
Production apps with authentication, payments, push notifications, offline mode and analytics, built to feel at home on both platforms.
03
Flutter for web and desktop
The same codebase on the web, Windows, macOS and Linux for app-like tools. For SEO-critical web pages we build in Next.js instead.
04
Back ends and Firebase
Firebase or Supabase for speed, or Node.js APIs on your own cloud, with authentication, storage, real-time data and admin panels.
05
AI features in Flutter apps
On-device and cloud AI: chat assistants, smart search, image and voice features, built on models from OpenAI, Anthropic and Google.
06
Add Flutter to an existing native app
Add new Flutter screens to your iOS or Android app with add-to-app, or migrate to Flutter screen by screen, without stopping releases.
07
Flutter UI and UX design
User flows and UI in Figma, with Material 3 and Cupertino patterns where they help, designed for real thumbs and real screen sizes.
08
App store launch and maintenance
App Store and Google Play listings, review and release, then OS updates, Flutter upgrades, fixes and new features after launch.
Deliverables
12
deliverables, in writing
Included in every build, written into your fixed quote before work starts.
FIG 06 · Flagship build
Proof: AI products, engineered end to end
Kenerate AI is a web product, not a Flutter app. It’s our flagship build, an all-in-one AI image and video studio we designed and engineered, and it shows the AI-integration depth we bring to your Flutter app.
- 200+ AI models behind one app, one login and one credit balance
- 23+ studios and tools, from Image Studio to Director
- Kenerate Agent: chat with an agent that picks the model and runs the workflow
- 1,000+ projects for 250+ clients since 2015
The idea: 15 apps, 15 logins, 15 bills become one studioDesigned and engineered by Elgrith
- AI models in one app
- 200+
- Studios and tools
- 23+
- Maximum output
- 4K
- Guides
- 500+
FIG 07 · Under the hood
How we build Flutter apps that last
The technical choices that decide whether a Flutter app stays fast and easy to change after version one.
06principles
Smooth rendering with Impeller
Flutter’s Impeller engine precompiles shaders, which helps avoid first-run jank. We profile animations and lists on real devices, not just simulators.
Clear state management
Riverpod or Bloc, chosen per project and used consistently, so features stay testable and new developers can find their way.
Platform channels for native features
When a plugin doesn’t exist or isn’t good enough, we write Swift and Kotlin code behind type-safe platform channels.
Offline-first where it matters
Local storage with SQLite or Drift and sync rules that handle bad connections without losing your users’ work.
Tests and CI/CD
Unit, widget and integration tests, with Codemagic, GitHub Actions or fastlane building and shipping test releases automatically.
Accessible by default
Semantic labels, scalable text, contrast and screen reader checks on iOS VoiceOver and Android TalkBack.
FIG 08 · Go further
The rest of your product, from one team
Your app rarely lives alone. These are the services that most often sit next to it.
07principles
Start with an MVP
Prove the idea with a lean first version before you fund the full roadmap.
MVP developmentSEO-critical web
If your web app has pages that must rank, we build that part in React and Next.js.
React & Next.js developmentA marketing website
A fast site that explains the app and drives installs, designed alongside it.
Website designKeep the website healthy
Updates, backups and monitoring for the site that sends people to your app.
Website maintenanceContent from WordPress
Publish articles and pages in WordPress and show them in your app through its API.
WordPress developmentOutsource the whole build
A fixed-scope project, delivered end to end by our New Delhi team on your hours.
Outsource web developmentPlan your budget
What drives the cost of an app, from features to platforms to back end.
App development cost guide
FIG 09 · Process · 6 steps
Test builds on your phone, every sprint
A fixed written quote and a phased plan before work starts. You hold a working build in your hand from the first sprint, not just at the end.
- Step 01
Discovery
Users, features, platforms, integrations and risks. You get a written scope, a phased plan and a fixed quote.
- Step 02
UX and UI in Figma
User flows and screens for phone and tablet, tested as a clickable prototype before development starts.
- Step 03
Sprints with test builds
Development in sprints, with new builds on TestFlight and Google Play internal testing so you try every feature on your own phone.
- Step 04
QA on real devices
Manual and automated testing across iOS and Android phones and tablets, screen sizes and OS versions.
- Step 05
Store submission
Listings, screenshots, privacy details and submission to the App Store and Google Play, under developer accounts in your company’s name.
- Step 06
Support and growth
Monitoring, crash fixes, OS and Flutter upgrades and new features, on the plan agreed in writing.
FIG 10 · What you get
Everything included
Written into your fixed quote, so you know exactly what you are paying for before work starts.
12items
- Discovery notes and feature map
- Written scope and fixed quote
- UX flows and Figma UI designs
- Flutter app for iOS and Android
- Web or desktop builds, where in scope
- Back end, Firebase or API set-up
- Unit, widget and integration tests
- CI/CD pipeline for test and store builds
- Crash reporting and analytics
- Store listings and submission
- Store accounts in your company’s name
- Full source code and documentation
FIG 11 · Tech & tools
The tools behind the work
Proven, well-supported tools, chosen for your project and set up in accounts your business owns.
- Flutter
- Dart
- Material 3
- Cupertino
- Impeller
- Riverpod
- Bloc
- Firebase
- Supabase
- Node.js
- Drift
- Stripe
- RevenueCat
- OpenAI
- Google Gemini
- Codemagic
- fastlane
- GitHub Actions
- Sentry
FIG 12 · Who it’s for
Flutter apps for US, UK and Indian businesses.
Engineering in New Delhi, with client partners in New York and London. Here is how we work with each market.
3 audiences
USA
Flutter app development for US companies.
A New York client partner and a call window in your morning. Builds land on TestFlight while you sleep, ready to try when your day starts.
- Quotes in USD
- Calls in the US morning, our evening
- Apple and Google accounts in your name
- Data handling designed around US privacy laws
UK
A Flutter app development company for UK teams.
Flutter developers for UK businesses, with a London client partner and about 4.5 to 5.5 hours of shared working time across your morning and early afternoon.
- Quotes in GBP
- Shared hours in the UK morning and early afternoon
- Data handling designed around UK GDPR
- UK spelling in your app copy
India
A Flutter app development company in India.
Flutter apps for Indian startups and enterprises from our New Delhi headquarters, with Razorpay and UPI payments and support for Indian languages.
- Same working hours
- Quotes in INR
- Razorpay and UPI payments
- Indian language support
FIG 13 · Working with us from the USA and UK
Built in New Delhi. Run on your hours.
Every project gets a point of contact in New York or London and an engineering team in New Delhi. Here is how today’s working days line up, live.
New York
North America
--:--ET
New Delhi team Your working day- Shared working time
- ≈ 3 hours today
- New Delhi is
- 10.5 h ahead
- Live calls, your time
- 9 a.m. to 12 p.m. ET
London
UK & Europe
--:--UK
New Delhi team Your working day- Shared working time
- ≈ 4.5 hours today
- New Delhi is
- 5.5 h ahead
- Live calls, your time
- 9 a.m. to 1:30 p.m. UK
Three ways to work together
- 01
Fixed-scope project
A written scope, one fixed price and a dated plan. Suits websites, apps and MVPs.
- 02
Dedicated team
Designers and engineers on your roadmap every month, billed monthly.
- 03
White label
For US and UK agencies: our work, your brand, unbranded deliverables.
Every engagement
- Fixed quote in USD, GBP or INR after a free 30-minute call
- NDA before discovery. You own all code, designs and content
- A working demo every sprint, not status slides
- Reply within one business day, calls inside your hours
Book a call
Calls on ET or UK hours
FIG 14 · Compare
Flutter vs React Native vs native
All three can ship a great app. The right choice depends on your team, your design and how much of each platform’s native SDK you need.
| Flutter | React Native | Native (Swift and Kotlin) | |
|---|---|---|---|
| Language | Dart | JavaScript and TypeScript | Swift for iOS, Kotlin for Android |
| Codebases | One | One | Two |
| UI | Drawn by Flutter: identical on every platform | Native components through React | Fully native per platform |
| Web and desktop | Same codebase, best for app-like tools | Web through separate tooling | Separate projects |
| Hiring pool | Smaller (Dart) | Large (JavaScript) | Separate iOS and Android specialists |
| Best for | Custom, branded UI on iOS and Android together | Teams already strong in React | Apps that live on the newest native APIs |
FAQ
Frequently asked questions
Straight answers about Flutter App Development with Elgrith.
Flutter app development is building apps with Flutter, Google’s open-source UI toolkit, which turns one Dart codebase into apps for iOS, Android, web and desktop. You get one team, one codebase and a consistent UI on every platform. Elgrith designs, builds, launches and maintains Flutter apps for businesses in the USA, UK and India.
FIG 15 · Related
Keep exploring
IoT App Development
Connected devices & wearablesApp Development
iOS, Android & cross-platformMVP Development
Web, mobile and AI MVPs you ownHire Dedicated Developers
Your own full-time remote teamAI Development
LLM apps, AI agents & MCPApp development, London
iOS, Android & Flutter apps on UK timeApp development, New York
iOS, Android & AI apps on Eastern Time
Free 30-minute call
One codebase. Every platform. Let’s build it.
Tell us about your app. After a free call you get a written scope, a phased plan and a fixed quote, and you own the code and the store accounts.
Pick a day for your call
OpenPick a day. You'll choose a time in your own time zone on the next step.