March Code
Service

Cross-Platform App Development with Flutter

One Flutter app for iOS, Android and the web from a single codebase. 120 fps, pixel-perfect UI, 40% cheaper than native development. A clickable prototype free in 5 days, an MVP core from $9,900 in 6–8 weeks

Demo in 3–5 daysfree, before any contract
from $9,900transparent quote
13+ yearsof founder experience · US, Europe, CIS

Free consultation · 30 minutes · No obligation

Cost
from $9,900
First step
A clickable prototype in 5 days, free
First paid stage
Flutter MVP core: from $9,900, 6–8 weeks
  • Quote in 24 hours
  • Pay by stage
  • Your code from day one
  • Weekly demos
  • 3-month warranty
  • Contract and invoices

Telegram @marchcode · info@march-code.tech · Mon–Fri 9:00–18:00 Central European time, and on Telegram we reply outside these hours too

When it matters

Situations where we help

If you recognize even one, we can be useful

01

Native development doubles the budget

Two developer teams (Swift and Kotlin), two test suites, two CI/CD pipelines, two QA cycles. Every new feature costs double, forever. Flutter cuts the budget by 40–50% without losing quality.

02

Android lags a month behind iOS

With native development, the platforms inevitably drift apart: different bugs, different progress, different deadlines. Flutter guarantees a simultaneous release on both platforms, with the same features and UI.

03

The UI is heavier than the logic: animations, graphics, custom gestures

In a native stack, custom transitions, charts and branded components get drawn twice and still drift apart. Flutter renders with its own engine, Impeller: a complex animation is written once and runs the same on an iPhone and a Redmi. For visually rich products, that's one less round of design QA on every feature.

04

You need mobile and web on a budget for one

Flutter supports iOS, Android, web and desktop from one codebase, with 90% of the code reused. One team instead of three. One budget instead of three, plus 15–20% for the extra platforms.

Let's estimate the budget for your task

Describe your task and we'll come back with a timeline and cost estimate within 1 business day. Want to see the product before the numbers? We'll build a free prototype.

Get a quote
What you get

Features and benefits

Concrete results we deliver for you

01

120 fps on Impeller, no jank

Flutter renders through its own graphics engine, Impeller, with no JavaScript bridge. The result: smooth animations even on budget devices, plus native-speed scrolling and transitions.

02

Pixel-perfect UI on every platform

Flutter controls every pixel on the screen. Your app looks the same on a Samsung, an iPhone or a Xiaomi. No surprises from platform rendering: what you see in the Figma mockup is what you get on the device.

03

Hot Reload: changes in 1 second

Change the code and see the result on screen in a second, without restarting the app. That speeds up iterations, makes design tweaks easier and shortens the development cycle. A developer runs 50+ iterations an hour instead of 10.

04

iOS, Android and web from one codebase

BLoC/Riverpod for business logic, platform-specific widgets for native UX on each platform. One release cycle, one test suite, one team. 40–50% savings on development and maintenance.

05

25,000+ packages on pub.dev

Camera, maps, payments, push notifications, Bluetooth, NFC: ready-made packages with native performance. We don't reinvent the wheel: we use proven solutions and adapt them to your needs.

06

Widget and integration tests with 80%+ coverage

Flutter's testing framework lets us test the UI without an emulator, so tests run in seconds. Widget tests for components, integration tests for user flows. 80%+ coverage is the standard, not the exception.

Process

How we work

A transparent process with clear stages and deliverables

1
Stage 1

Discovery and mobile UI/UX: 1–2 weeks

First, a free clickable prototype of the key screens in 5 days, before any contract. Then audience and scenario analysis and a design that follows Material 3 and Apple's HIG, so the app feels native on both platforms.

2
Stage 2

Development in Flutter and Dart: 4–8 weeks

BLoC plus Clean Architecture. Daily builds via Firebase App Distribution and TestFlight. Hot Reload for fast iterations. A demo every week on both platforms. An MVP core goes through the whole route in 6–8 weeks in total.

3
Stage 3

Integrations and polish: 2–3 weeks

Apple Pay, Google Pay, push notifications, maps, analytics. Performance tuning on budget Android devices. Testing on 20+ device models. Tablet layouts.

4
Stage 4

QA and release in both stores: 1–2 weeks

Final testing on physical devices. ASO for the App Store and Google Play. Getting through review in both stores. Screenshots, descriptions and keywords for each platform.

5
Stage 5

Support and growth: ongoing

Updates for new versions of Flutter, iOS and Android. Crash monitoring, A/B tests, new features. 3 months of warranty support. Subscription support from $2,900/month.

Cost and timeline

What it costs

You get an exact quote within 24 hours of the call

Cost
from $9,900
What's included
  • Start with a free clickable prototype in 5 days, before any contract
  • Flutter MVP core, iOS + Android in the stores: from $9,900, 6–8 weeks
  • Full app with payments, push notifications and offline mode: $35–90K, in stages
  • Web version from the same codebase: +15–20% to the stage budget, not a second project
  • Payment in stages; the code, the repository and the store accounts stay yours

The final cost depends on scope. We'll work it out after a short call.

Prices shown are indicative and for information only; they are not a binding offer. The final cost is set in the contract once the project requirements are agreed.

Flutter: one codebase for iOS, Android and the web

Going cross-platform with Flutter saves 40–50% of the budget compared with two native teams. A clickable prototype is free in 5 days, an MVP core from $9,900 reaches the stores in 6–8 weeks, the engine renders the interface the same way on any device, and animations hold 120 fps. We test on budget Android phones from the first week, so “it lags on cheap phones” doesn't describe our projects.

We rely on cross-platform development ourselves: MarchTracker is our own product, running on iOS, Android and the web from a single codebase. We pick the engine to fit the product: where the UI is heavier than the logic, Flutter; where you already have a React team, React Native. Haven't settled on a framework? Start with our mobile app development hub.

Choosing a technology? Every approach has limits, and we spell them out before the contract, not after. To estimate a budget range for your feature set, try the mobile app cost calculator.

Case studies

Real results

Projects where we applied this service

Case study: MarchTracker: A Team Task Tracker for iOS, Android and Web
3 platformsfrom one codebase

MarchTracker: A Team Task Tracker for iOS, Android and Web

Product SaaS

Plan, sprint and ship in one fast workspace. Kanban boards, sprints, a calendar, built-in time tracking and real-time collaboration: one Expo / React Native codebase and a NestJS backend.

3 platformsfrom one codebase
6 viewsof one project
Real-timethe whole team on one board
2 in 1task tracker + time tracking
Case study: Alluno: A Project Management Platform for Interior Design Studios
3Platforms on one backend

Alluno: A Project Management Platform for Interior Design Studios

Interior design · SaaS

Web, iOS and Android apps on one backend replace the Telegram-chat chaos at design studios: projects, real-time chat by channel, versioned files, one-click approvals, stages and documents.

3Platforms on one backend
1 placeInstead of Telegram chaos
1 clickTo approve a mockup
$0to log in: a phone call instead of paid SMS
Case study: Payment System MVP with Banking API Integrations
3.5 mofrom idea to a working MVP

Payment System MVP with Banking API Integrations

Financial technology

An MVP of a payment platform with KYC/AML verification, multi-currency transfers and banking API integrations. We launched it in 3.5 months, in time for an investor demo day, and after the demo day the startup closed its seed round.

3.5 mofrom idea to a working MVP
10K+transactions in the first month of beta
0KYC/AML issues raised by partner banks
FAQ

Frequently asked questions about Flutter Development

Answers to the questions we hear most often

A clickable app prototype in 5 days, free

MVP from $9,900, prototype free

Prices are indicative and not a binding offer.

We build an interactive prototype of the key screen so you can try the product before development starts.

Step 1 of 2 · Task

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