The React mark inlaid in its own cyan on an obsidian tile beside the Flutter mark inlaid in obsidian on a gold tile

MOBILE APPS

Cross-Platform App Development With React Native and Flutter

Vivid Concept builds one app for iPhone and Android in Los Angeles with React Native or Flutter, shares the code and the back end, and tells you where native work wins.

Free Consultation All Web Design & Development

A senior consultant reads your request and responds within one business day.

One codebase, two stores

Your buyers carry both iPhones and Android phones, and a cross-platform app reaches both from one codebase. For many business apps that shortens the build and, above all, the upkeep. Our software developers handle the app, the API behind it and the release to both stores.

React Native and Flutter are the two frameworks we recommend. With either, every feature, fix and screen is made once and tested on both platforms, and a single back end keeps the two apps in step.

Some products still call for separate native builds, covered under App Store ready iOS apps and Google Play ready Android apps. The full picture, from first plan to release, is under mobile app planning and development, and we lay out the choice for your product with our reasons.

IN-HOUSE ADVANTAGE

Connected With Our Full Los Angeles Team

One codebase and one in-house team bring your app to iPhone and Android, with the back end built by the same programmers.

What Is Included in Cross-Platform Apps

Your Cross-Platform Apps Process

DiscoveryWe review your setup, audience and goals, and you receive a clear scope before work starts.
DesignWireframes show each page or screen and how visitors move through it, and you sign off before production.
BuildBuilt by our in-house team with no handoffs.
LaunchEvery page is tested and reviewed by a person before it goes live.
SupportThe team that built it stays available after launch.

React Native or Flutter: how we choose

A designer and a developer compare one app design on a phone and a tablet laid side by side on a table.

React Native lets you build native apps with React; its components render as the platform's own interface elements, and since version 0.82 every app runs on its New Architecture, so a new build starts on the framework's current foundation. React Native's own documentation recommends starting new projects with a framework and names Expo, a framework for universal React apps.

Flutter is Google's open-source framework, written in Dart. It paints the whole interface with its own rendering engine, so the app looks the same across operating system versions.

The choice follows your facts. We lean to React Native when your team or website already uses React, since skills and some code carry across, and for teams already building on Next.js it is a natural companion. Flutter suits a strongly branded, animated interface that must look identical everywhere.

Two developers with a phone for each system and a laptop, comparing the same app on both.

What is shared and what stays native

Most of the app is shared across both phones: screens, navigation, business rules, data handling and the connection to your API. The platform keeps the parts it controls: permissions, push notifications, biometric sign-in, Apple Pay and Google Pay, camera and file access, and each store's review rules.

Where a feature needs native code, we write a small native module, which keeps the shared code clean. The back end is built once and serves the app, your website and partners alike, the same approach behind SaaS platform development.

Design starts from research-led interface design, so a single design system covers both platforms while each app still feels at home on its own phone and in its own store.

When native still wins

A designer hands a developer a page of screens, one design shared across two phones.

Separate native apps make sense when the product depends on the newest platform features the day they are released, on heavy real-time graphics or on advanced camera, sensor or background processing. They also fit when a store requires a platform look that only native code delivers.

For everything else, sharing code saves real money over the life of the app. The choice also stays open: an app that starts cross-platform can add native modules or move a single screen to native code later, as the product grows.

A team follows a checklist for store review and release, phones and laptops on the table.

Testing, release and upkeep

Both stores review every release, each with its own rules for privacy disclosures, payments and permissions. We test on a range of real phones and tablets, automate checks in the build, share test builds with your team and prepare the store listings, screenshots and privacy answers.

After launch we watch crash reports, ship updates for new operating system versions and keep the shared code current, so one update reaches both stores.

Around the app, our web development services team builds the marketing site and landing pages that send visitors to download it, and custom website design covers a companion web version when buyers need one.

23 Years in Los Angeles

Cross-Platform Apps Questions & Answers

Should I build one app or two?

One cross-platform app suits most business apps, because features and fixes are made once. Two native apps suit products that depend on the newest platform features, heavy graphics or advanced device hardware. We look at your product and recommend one, and tell you why.

What is the difference between React Native and Flutter?

React Native uses React and renders each platform's own interface elements. Flutter uses Dart and draws every control with its own engine, so the app looks the same across operating system versions. Your team's skills, your design and your product decide which one we pick.

Can the same back end serve the app and my website?

Yes, and it should. One API serves the app, the website and your partners, so accounts, orders and content stay in step and every business rule lives in one place.

Can a cross-platform app use Apple Pay and Google Pay?

Yes. Payments, push notifications, biometric sign-in and camera access connect through native modules or well-maintained libraries, so each phone behaves the way its owner expects.

Can we move to native later?

Yes. The back end and the design system carry over, individual screens can move to native code, and native modules can join the shared project. Starting cross-platform keeps that door open.

Tell Us About Your Project.

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Cross-Platform App Development With React Native and Flutter