Cross Platform App Development Services — One Codebase for iPhone, Android and Tablet
Our cross platform app development services give you one app, written once in Flutter and Dart, that runs on Android phones, iPhones, tablets and Mac. You pay for one build instead of two, get one team for design and development, and launch on Google Play and the App Store together. Right now we’re building MusicKanHeal, a music-therapy and piano-learning app, and the screens on this page are from that build.
Cross Platform App Development Services, From First Screen to Store Listing
Most small businesses and startups can’t justify paying two teams to build the same app twice. Our cross platform app development services cover the whole job in one place: the design, the Flutter build, the backend it talks to, and the release on both stores. If you also need a website or a launch campaign, our web development team sits in the same office.
App UI/UX Design
Screen flows and a design system built for thumbs, not mouse pointers. Every layout gets a phone and a tablet version before any code is written.
Flutter App Development
One Dart codebase compiled to native apps for iOS and Android. Fixes and new features ship to both platforms at the same time.
Tablet, Landscape & Mac Layouts
Adaptive layouts that use the extra space properly, so the app doesn’t look like a stretched phone screen on an iPad or a laptop.
Accounts & Sign-In
Email sign-up, password reset, and one-tap sign-in with Google and Apple, with user profiles and progress saved to the cloud.
Subscriptions & Premium Content
Free and premium tiers, locked content and in-app purchases set up through the App Store and Google Play billing systems.
App Store & Google Play Release
Release builds, store listings and screenshots, submitted under your own developer accounts so the app and its reviews stay in your name.
MusicKanHeal: Our Cross Platform App Development Services in Action
MusicKanHeal is a music-therapy and piano-learning app heading to Google Play and the App Store. We already built and support the MusicKanHeal website; the app is the next step, and it’s being built with the same cross platform app development services described on this page.
It’s a single Flutter and Dart codebase. The same code draws a two-column home grid on a phone, a four-column grid on a tablet, and a wide dashboard in landscape. Users check in with how they’re feeling, then move into healing audio, piano lessons, an interactive keyboard, the Nashville number system, video lessons, worksheets and quizzes.
- Sign-in with email, Google or Apple
- Daily streaks, completed lessons and XP
- Free lessons plus premium lessons behind a subscription
- Phone, tablet and landscape layouts from one codebase
Read the full MusicKanHeal case study for the website, SEO and Meta Ads side of the project.
Screens from the current MusicKanHeal build. Swipe or scroll to see more.
Why Flutter Is the Base for Our Cross Platform App Development Services
A few years ago, “cross platform” meant an app that felt slightly wrong on both phones. Flutter, Google’s open-source UI toolkit, changed that: it compiles to native machine code and draws every pixel itself, so the app looks and scrolls the same on an iPhone and a Samsung.
For a small business, the practical win is simple. With cross platform app development services built on Flutter, one team writes one codebase, so every fix and every new feature reaches iOS and Android users on the same day. Two separate native apps mean two codebases, two sets of bugs and, usually, two invoices.
Native code still has its place. When a feature needs something only one platform offers, we write that piece natively and keep everything else shared.
What Cross Platform App Development Services Actually Cost
There’s no honest single price for an app. A booking app with five screens and a food-delivery app with live tracking are different projects. What we can promise is how the price gets set: after a free scoping call, you get a fixed quote for each milestone before any work starts.
You approve each milestone before you pay for it. That’s how we price all our cross platform app development services, and it’s how MusicKanHeal is running now. The panel shows what moves the number most, so you can decide early what belongs in version one.
Our published prices for websites, SEO and ads are on the pricing page. App quotes are written per project because the scope varies too much for a price list.
Five Milestones, One Working App
Like MusicKanHeal, most of our cross platform app development services projects are split into five milestones. Each one ends with something you can open and test on your own phone, so you’re approving working software, not a status report.
Scope & UI/UX
User flows, screen designs for phone and tablet, and a written feature list you sign off on.
Core App Build
Navigation, sign-in and the main screens, running on real iOS and Android devices.
Features & Integrations
Payments, subscriptions, media, notifications and the backend the app talks to.
Testing & Polish
Testing across phone sizes, tablets and OS versions, plus the performance and accessibility fixes that come out of it.
Store Release
Store listings, screenshots and review submission on Google Play and the App Store.
Who Our Cross Platform App Development Services Are Built For
Our cross platform app development services suit small businesses, startups and course or content creators who need their app on both iPhone and Android without doubling the budget. Typical projects are membership and learning apps, booking and customer apps for service businesses, and companion apps for an existing online store or website.
They’re a weaker fit for 3D games or apps that are mostly heavy platform-specific hardware work. For those, we’ll tell you plainly on the first call. If you’re weighing up an offshore team, our guide to working with US and UK clients covers overlap hours, payments and response times.
Questions About Our App Development
The questions people ask before hiring us for cross platform app development services. If yours isn’t here, ask us directly.
It depends on the number of screens, the features and whether the app needs its own backend. After a free scoping call we quote a fixed price for each milestone, and you approve every milestone before you pay for it.
One Dart codebase compiles to native code for iOS, Android, tablets and desktop, so you pay for one build and one set of fixes instead of two. When a feature genuinely needs platform-specific code, we write that part natively and keep the rest shared.
Yes. Layouts are designed per screen size, not stretched. In the MusicKanHeal app, for example, the home screen shows a two-column grid on phones and a four-column grid on tablets.
Yes. We prepare the release builds, store listing text and screenshots, and submit the app under your own developer accounts, so the app and its reviews stay in your name.
Yes. The same in-house team handles web development, SEO and Meta Ads, so the landing page, the app and the launch campaign are planned together instead of by three separate vendors.
Tell Us About Your App — We’ll Scope It for Free
Send us your idea, a rough feature list or a competitor you like. We’ll come back with a milestone plan and a fixed quote for our cross platform app development services, usually within one business day.