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Cross Platform App Development Company

Cross Platform App Development Company in Canada | One Codebase for iOS and Android, Native-Grade Performance, and Faster Time to Market

AppStudio is a cross-platform app development company that builds one codebase for iOS and Android without the native compromises. Our engineers ship Flutter and React Native apps with native-grade performance, handling UX design, engineering, QA, and support so your product launches on both stores faster and at lower cost. Multiplatform mobile app development, done properly.

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Why Businesses Choose AppStudio for Cross-Platform App Development

One Codebase, iOS and Android

You get a single Flutter or React Native codebase that ships to both stores from one team, so you build once, fix once, and release together. That removes the cost and drift of running two separate native projects.

Native-Grade Performance and Feel

Our engineers use native modules, platform channels, and 60fps rendering so your app looks, feels, and performs like native on each platform. Users get the real thing, not a wrapped website in an app shell.

Senior Cross-Platform Engineers

Every build is staffed with senior Flutter and React Native developers who have shipped production apps to the App Store and Google Play, not juniors learning the framework on your budget and timeline.

Lower Cost, Full Ownership

One team and one codebase cost far less than funding two native builds, on transparent pricing with scope agreed upfront. You own all source code and IP outright, with clean documentation and no lock-in.

Services

Cross-Platform App Development Services, End to End

Flutter App Development

Single Dart codebase for iOS, Android, and web.
Pixel-perfect, 60fps UI with an expressive toolkit.
Ideal for brand-led, highly custom interfaces.

Explore Flutter Development →

React Native App Development

One JavaScript and TypeScript codebase across platforms.
Native modules for camera, maps, payments, and more.
A strong fit when you already have React or web talent.

Explore React Native →

Cross-Platform MVP Development

Validate on iOS and Android with one lean build.
Fixed scope and timeline to protect early budgets.
A clean codebase ready to scale after product-market fit.

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Custom Cross-Platform Apps

Multiplatform apps shaped around your real workflows.
Offline support, sync, and real-time data built in.
Architecture that scales from MVP to enterprise.

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Cross-Platform UI/UX Design

One design system that adapts to iOS and Android.
Platform-aware patterns, not a lowest-common-denominator UI.
Prototyped and tested before engineering begins.

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Native to Cross-Platform Migration

Consolidate separate iOS and Android apps into one codebase.
Incremental migration with no risky big-bang rewrite.
Lower maintenance cost while keeping native performance.

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Enterprise Multiplatform Apps

Secure enterprise apps with SSO and role-based access.
Integration with your ERP, CRM, and internal systems.
Built for compliance, scale, and long-term support.

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Web and PWA From One Codebase

Ship mobile and web from a shared Flutter or React codebase.
Installable progressive web apps with offline support.
A consistent experience across phone, tablet, and desktop.

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Backend, APIs and Integrations

Secure REST and GraphQL APIs and scalable cloud back ends.
Firebase, payments, maps, and third-party integrations.
Real-time sync, push notifications, and analytics wired in.

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Wearable, TV and IoT Apps

Companion apps for watchOS, Wear OS, and smart TVs.
Bluetooth, sensor, and IoT device connectivity.
One product family across phone, wearable, and screen.

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QA and Test Automation

Automated tests plus real iOS and Android device testing.
Performance, accessibility, and release-readiness checks.
CI pipelines that catch regressions before users do.

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Maintenance, Support and Scaling

OS and SDK updates, monitoring, and rapid bug fixes.
Store release management for App Store and Google Play.
Feature sprints that keep the app improving after launch.

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Cross platform app development company team at AppStudio

One cross-platform partner for design, engineering, QA, launch, and ongoing support.

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AppStudio rebuilt our two native apps as one Flutter codebase. We ship iOS and Android together now, the app feels genuinely native, and our release cost dropped sharply.

VP Product, SaaS Company, Toronto

Solving the Cross-Platform Challenges That Others Overlook

Business Priorities

Native-grade performance

One codebase, both stores

Senior framework engineers

Lower total cost

Code and IP you own

The right tech for the job

Launch and post-launch support

Industry Gaps

Laggy, wrapped web views in an app shell

Divergent iOS and Android builds to maintain

Juniors learning the framework on your budget

Paying two native teams for one product

Lock-in and undocumented handoffs

One framework forced onto every app

App left at code handoff

Our Proven Advantage

A 60fps UI with native modules where performance matters

A single Flutter or React Native codebase for both platforms

Developers who have shipped to the App Store and Google Play

One team and one codebase, roughly half the build effort

Clean, documented code and full IP ownership from day one

Flutter, React Native, or native chosen to fit your product

Store submission, monitoring, and update sprints included

Global Standards. Built-In Trust.

We operate with the highest levels of security, privacy, and quality, backed by globally recognized certifications. Our standards are built to meet enterprise and regulatory requirements across industries.

Book a Free Cross-Platform Consultation

Pick a time that works for you and walk through your app idea, target platforms, users, and timeline with one of our cross-platform advisors. You will leave with a clear read on scope, the right framework, and a practical next step, with no obligation.

Rated Among the Top Cross-Platform App Development Companies in Canada

A trusted choice for cross platform app development in Toronto and across Canada, AppStudio combines senior Flutter and React Native engineering with accountable delivery on cross platform mobile app development, so apps launch on both stores, feel native, and keep performing as they scale.

Book a Free Cross-Platform Consultation →

The Cross-Platform Stack We Build With

We build on the frameworks, languages, native tooling, and delivery stack that make cross-platform mobile development feel native and ship fast. These are the technologies our engineers use every day for cross platform development, from a first MVP to enterprise multiplatform mobile apps on iOS and Android.

Flutter

React Native

Ionic

.NET MAUI

Capacitor

Dart

Kotlin

Swift

TypeScript

JavaScript

Android Studio

Xcode

Gradle

Expo

Node.js

Firebase

GraphQL

PostgreSQL

MongoDB

Jest

Appium

Fastlane

Codemagic

GitHub Actions

How We Build Cross-Platform Apps

Cross-platform apps succeed when the right framework is chosen early, the UI is engineered to feel native, and the shared codebase is tested on real devices before launch. At AppStudio, our cross-platform app development model is structured, transparent, and refined across Flutter and React Native builds for startups and enterprises.

We work in clear phases so scope, platform strategy, and UX are agreed before development, and every release is reviewed and tested on real iOS and Android devices before it ships. Timelines and cost are planned upfront, which removes ambiguity and keeps delivery predictable from kickoff to launch.

By pairing senior engineering with design discipline, we help you launch on both stores faster and at lower cost than building two native apps, without giving up the performance and feel your users expect.

We map your goals, users, and target platforms, then recommend Flutter, React Native, or native and agree scope, architecture, timeline, and estimate so the build starts with a clear plan.

We design one platform-adaptive design system and prototype the core flows, so the app feels right on both iOS and Android before a line of production code is written.

We build in sprints on a shared codebase with native modules where needed, code reviews, and automated tests, and we test on real iOS and Android devices so every release is stable.

We handle CI/CD, App Store and Google Play submission, and release sign-off, so your app ships to both stores together without last-minute surprises.

We provide crash and performance monitoring, OS and SDK updates, and enhancement sprints so your cross-platform app stays fast, current, and improving after launch.

Proven by Results

The Numbers Behind Every Cross-Platform Build

Book a Free Cross-Platform Consultation →

apps launched across iOS and Android from a single shared codebase

0 Wks

typical time from kickoff to your first store-ready build

lower average build cost than funding two separate native apps

How We Deliver Value, in Our Clients’ Words

Evan Sutherland

VP Product, SaaS Company, Toronto, ON

“AppStudio rebuilt our two native apps as one Flutter codebase. We ship iOS and Android together now, the app feels native, and our release cost dropped by nearly half.”

Camille Fortin

Founder, HealthTech Startup, Montreal, QC

“We needed one app on both stores fast without a big budget. Their React Native team delivered in weeks and it looks and performs like a native build.”

Tyler Brennan

CTO, Logistics Company, Vancouver, BC

“Our field app has to work offline and sync later. AppStudio built it cross-platform with rock-solid offline support and it has held up across thousands of devices.”

Renee Levesque

Head of Digital, Retail Brand, Quebec City, QC

“One codebase for iOS and Android cut our roadmap in half. We ship features to both platforms at once instead of maintaining two separate teams.”

Marcus Holt

Director of Product, Fitness Startup, Calgary, AB

“They recommended Flutter over native and it was the right call. Smooth 60fps screens, a single team, and a faster path to launch.”

Priyanka Menon

Product Manager, EdTech Company, Mississauga, ON

“AppStudio migrated our separate iOS and Android apps into one codebase. Maintenance dropped sharply and releases are finally predictable.”

Kayla Dumont

Founder and CEO, Marketplace Startup, Ottawa, ON

“Senior engineers who knew both frameworks, not juniors experimenting on our budget. Our cross-platform app shipped on time and scaled cleanly as users grew.”

Brett Sullivan

Operations Lead, Field Services Company, Winnipeg, MB

“The app runs on phones, tablets, and a wearable from the same codebase. One partner handled design, build, launch, and support.”

Danielle Arsenault

CEO, Travel Startup, Halifax, NS

“From MVP to the App Store and Google Play in under four months. Cross-platform let us prove the idea on both platforms without doubling the cost.”

Cross-Platform App Success Stories

Skills Compétences Canada digital platform

Empowering Future Talent in Trades and Technology

Commissioned by Skills Compétences Canada, we built a national bilingual platform with native apps, a secure CMS, and Canadian cloud infrastructure to promote trades and technology careers at scale.

Canadian Wildlife Health Cooperative surveillance platform

Digitizing Wildlife Surveillance for National Resilience

For the Canadian Wildlife Health Cooperative, we replaced siloed tools with a cloud-native platform that unifies field reports, lab diagnostics, and cross-province analytics in real time.

Seattle Aquarium interactive digital experience

Interactive Learning Through Digital Experience

We unified kiosks, ticketing, and mobile into one cloud-native platform for Seattle Aquarium, raising visitor engagement and streamlining operations across every touchpoint.

Cross-Platform App Development Portfolio

Flutter and React Native apps our cross-platform team has designed, built, and shipped to the App Store and Google Play for clients.

Mindset

Mindset is the Ultimate Source for Motivation, Self-development and Wisdom. With Mindset, you can play the world’s best motivational, inspirational and educational audios for free.

View case Study

Jeddah Season

As part of the vision 2030, the Kingdom of Saudi Arabia has established a partnership with Zazz to modernize their nation wide mobile apps.

View case Study

Skills Competences
Canada Ontario

Built for the government of Ontario, to champion and stimulate the development of world-class technological and employability skills in Ontario youth.

Roundup

Get cooking with The Roundup™, the definitive guide to buying, cooking & enjoying North American beef! This app has information on beef cuts, recipes, cooking & cuts videos to help you buy the proper cut and cook it confidently.

ECAO

The app serves as a one-stop solution for Ontario’s electrical contractor community to organize and manage events, and conferences, talk to other members and share updates.

Ideal Protein

The Ideal Protein App is the digital pocket companion to the Ideal Protein Protocol. This personalized Protocol assistant is designed to help people achieve their weight loss goals and support a new, healthy lifestyle through three prioprietary phases: Weight Loss, Stabilization, and Maintenance.

View case Study

WSPS

Designed & Developed to save lives, and help prevent the spread of COVID 19, by providing the most reliable and up to date information needed by Employers across Canada.

View case Study

Industries We Build Cross-Platform Apps For

AppStudio builds cross-platform apps tuned to each industry, one codebase that ships to iOS and Android with the performance, integrations, and reliability your users expect. Our engineers pair domain knowledge with senior Flutter and React Native skills so products launch on time and scale.

Healthcare & Life Sciences

Patient, provider, and telehealth apps on iOS and Android.
One codebase with secure, HIPAA-aware data handling.
Wearable and device integrations from a shared build.

Pharmaceuticals & MedTech

Field, trial, and rep-enablement apps for both platforms.
Offline-capable data capture that syncs when back online.
Integration with regulated and legacy systems.

Accounting & Financial Services

Secure banking, payments, and finance apps, one codebase.
Biometric login and encrypted storage across platforms.
Reliable performance for high-frequency use.

Retail & Consumer Commerce

Shopping, loyalty, and checkout apps for iOS and Android.
Fast, native-feel UI that lifts conversion.
Integration with your commerce and payment stack.

Government & Public Sector

Citizen-facing apps that ship to both stores at once.
Accessible, standards-compliant interfaces.
Reliable performance across a wide range of devices.

Logistics, Supply Chain & Transportation

Driver, dispatch, and warehouse apps, one codebase.
Offline support, maps, and real-time tracking.
Barcode, sensor, and IoT device integration.

Telecom & Connectivity

Self-service, billing, and support apps for all users.
High-scale apps built for large subscriber bases.
Secure integration with core systems.

Education & eLearning

Learning apps for phone and tablet from one build.
Video, offline content, and progress tracking.
Engaging, accessible, responsive interfaces.

Travel, Hospitality & Aviation

Booking, itinerary, and loyalty apps on both platforms.
Multilingual, fast, offline-friendly experiences.
Integration with reservation and payment systems.

High-Tech, SaaS & Software Product Companies

Full product apps for iOS and Android, one codebase.
Design systems and reusable component libraries.
A team that scales with your product roadmap.

Real Estate & PropTech

Listing, tour, and tenant apps for both stores.
Maps, media galleries, and real-time availability.
Secure documents and in-app messaging.

Energy, Oil & Gas

Field, inspection, and asset apps, one codebase.
Offline-first data capture for remote sites.
Secure integration with operational systems.

Manufacturing & Industrial

Production, maintenance, and inventory apps.
Real-time IoT and shop-floor data on any device.
Reliable performance on shared and rugged hardware.

Media & Entertainment

Streaming, content, and subscription apps for both platforms.
Smooth playback and personalization from one codebase.
Built for spikes in traffic and usage.

Legal Services & Law Firms

Case, document, and client-portal apps, one codebase.
Confidential data handling and secure access.
Search, e-signature, and calendaring built in.

Nonprofit Organizations

Donor, volunteer, and program apps for iOS and Android.
Cost-efficient one-codebase builds for lean teams.
Payments, events, and outreach integrations.

Cross-Platform App Development, Built for Performance and Scale

AppStudio is a cross-platform app development company in Canada for startups, scale-ups, and enterprises that need one app to perform on iOS and Android. Our engineers own the full journey, from platform strategy and design to Flutter and React Native engineering, integrations, launch, and ongoing support, so your app ships on both stores on time.

Whether you need a lean MVP on both stores or a large multi-platform product, we shape every build around your users, devices, and budget, not a rigid template. You get senior cross-platform engineers, a clear scope, and code you own.

We work with product teams across Toronto and Canada, and with clients throughout North America. Explore your options with a free cross-platform consultation, or see our Flutter app development, React Native app development, iOS app development, Android app development, hybrid app development, web application development, UI/UX design, and hire app developers services if you need related support.

Book a Free Cross-Platform Consultation →

Cross platform app development company experts at AppStudio

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Cross-Platform App Development FAQs

Cross-platform app development is building one app from a single codebase that runs on both iOS and Android, usually with Flutter or React Native. Our cross platform mobile app development services cover strategy, design, engineering, launch, and support, and our team handles full cross platform mobile application development from MVP to enterprise scale.

Both are excellent, and the right choice depends on your product. Flutter gives pixel-perfect, highly custom UI from one Dart codebase, while React Native fits teams with existing React or JavaScript talent. In your free consultation we recommend the framework that suits your app, timeline, and team.

For the large majority of apps, yes. We use native modules, platform channels, and 60fps rendering so a Flutter or React Native app feels native. For niche cases like heavy 3D or deep hardware work, we tell you honestly where native is the better call.

It depends on scope, screens, and integrations, but one codebase for both platforms typically costs far less than funding two native builds. After a free consultation we give you an itemized estimate and a build plan before you commit.

A focused MVP usually reaches both stores in about 10 to 16 weeks, and larger apps run longer. We deliver in sprints so you see working, tested builds on real devices early rather than waiting until the end.

Yes. That is the core benefit of cross platform mobile app development: you build once and ship to the App Store and Google Play together, with platform-adaptive UI so each version still feels right at home.

Yes. We migrate separate iOS and Android apps into a single Flutter or React Native codebase incrementally, without a risky big-bang rewrite, so you cut maintenance cost while keeping performance.

Yes. We build secure REST and GraphQL APIs, cloud back ends, and integrations for payments, maps, Firebase, and push notifications, so your multiplatform app is a complete, production-ready product.

It can. We build offline-first flows with local storage and background sync, so field, logistics, and healthcare apps keep working without a connection and reconcile cleanly when back online.

Yes. We manage store setup, submission, review, and release for both platforms, and we set up CI/CD so future updates ship to iOS and Android together with less manual work.

Completely. You own all source code and intellectual property. We hand over clean, documented repositories with signed IP assignment and no lock-in.

Both. You can hire a dedicated cross-platform team, augment your in-house developers, or scope a fixed project. We recommend the model that fits your stage and budget.

Yes. Our support covers crash and performance monitoring, OS and SDK updates, and feature sprints, so your app stays fast, current, and improving long after release.

Book a free cross-platform consultation. We talk through your app, target platforms, and goals, then come back with a recommended framework, scope, timeline, and estimate. There is no obligation.

Request a Cross-Platform App Consultation

Tell us about your app, target platforms, and integrations using the form below and our cross-platform team will reach out to discuss your requirements and the approach that fits best.

Cross Platform App Development Company