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Home » Services » React Native App Development

React Native App Development for iOS and Android

React Native app development is building iOS and Android apps from one JavaScript and TypeScript codebase that renders real native components. Syndell helps founders, product managers, and CTOs launch one app on iOS and Android without running two native teams, and rescues React Native projects that have stalled.
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Top App Development Company on Clutch
GoodFirms - Top App Development Company
Google Reviews - Syndell Technologies

Tell Us About Your Project

Share a few details about what you want to build.
12+
Years of Experience
1539+
Projects Delivered
20+
Countries from 5 Continents
618+
Clients Served

Trusted by Industry Giants, Enterprises, and Startups

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CEAT logo
Zee logo
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C2Bids Consulting Services logo
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Color Hunt logo, a stylized cursive "ch" monogram
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When Clients Call Us Urgently

If one of these sounds familiar, this is where we step in.
We start with an audit of the code and the build pipeline, so you know whether to fix, upgrade, or rebuild.
01

It Crashes on Android but Not on iOS, or the Reverse

Platform-specific crashes usually trace to a native dependency, a permission, or an OS update. We reproduce it on real devices, fix the cause, and add a test so it stays fixed. Every day it stays broken costs you users and store ratings.
02

You Are Stuck on an Old React Native Version

Upgrades stall when a library falls behind. We check every native dependency, move you up in stages, and replace abandoned packages instead of patching around them. That blocks new features, and store rules can force an upgrade on a deadline.
03

The App Feels Slow

Janky lists, slow start-up, and heavy screens usually come from needless re-renders and oversized lists. We profile first, then fix what the numbers point to. Slow apps lose users and hurt retention.
04

The Store Rejected Your Build

Rejections often come from permissions, privacy declarations, or crashes on review devices. We read the rejection, fix the cause, and resubmit. A rejected release can push back a launch, a campaign, or an investor demo.

React Native App Development Services

Six areas of React Native mobile development we handle, for new apps and existing ones.

Custom React Native Apps

Consumer and business apps for iOS and Android, from navigation and state design to store-ready builds.

Native Modules and Plugins

Bridges to Bluetooth, camera, biometrics, and background tasks when a JavaScript library does not cover them.

API and Back-End Integration

Connect the app to REST or GraphQL services, Firebase, or a Node.js or Laravel back end, with offline and error handling.

Real-Time and AI Features

Chat, live tracking, and notifications using WebSockets and push services (FCM and APNs), plus AI features such as assistants or on-device models where the product needs them.

Cross-Platform Delivery

One codebase for iOS and Android, with platform-specific screens where each store’s conventions differ.

Maintenance and Support

Crash monitoring, OS-update fixes, dependency upgrades, and new features after launch.
Need React Native Engineers in Your Own Team?
See Hire React Native Developers

Why Build a Mobile App With React Native?

Native Screens, Not a Web View

React Native renders platform UI components, so scrolling, gestures, and controls behave the way iOS and Android users expect.

One Team, Both Stores

Logic, API code, and most screens are shared, so a feature is built once and tested on both platforms.

Faster Fixes Where Policy Allows

JavaScript-level fixes can ship as over-the-air updates through tools such as Expo EAS Update. Native changes still go through store review.

Fits React Teams

Developers who know React and TypeScript can contribute, and mobile can share types and API clients with your ReactJS web app.

React Native vs Flutter vs Native

React Native
Flutter
Native iOS and Android
Language
React Native
JavaScript or TypeScript
Flutter
Dart
Native iOS and Android
Swift and Kotlin
How the UI Is Drawn
React Native
Platform's Native Components
Flutter
Flutter's Own Rendering Engine
Native iOS and Android
Platform's Native Components
Codebases
React Native
One
Flutter
One
Native iOS and Android
Two
Best Fit
React Native
Teams with JavaScript Skills, Standard App Interfaces
Flutter
Custom, Animation-Heavy Interfaces That Look Identical Everywhere
Native iOS and Android
Apps That Need the Newest Platform APIs or Heavy Graphics
We build in all three. We recommend after scoping, not before.
Not Sure React Native Fits Your App?
We will tell you plainly.
Get a Quote

How a React Native App Gets Built

01

Scope and Platform Decisions

We define users, must-have features, device and OS support, and whether Expo or a bare workflow fits your native needs.
02

Design for Two Platforms

Screens follow iOS and Android conventions, with a clickable prototype you approve before build.
03

Build in Sprints

Each sprint ends with a test build on TestFlight and Google Play internal testing.
04

Test on Real Devices

Automated tests plus checks on physical iPhones and Android phones, with performance profiling before release.
05

Release and Support

We prepare store listings and submissions, monitor crashes after launch, and stay on for updates. Button: Book a Consultation Bring your app idea or existing code and we will map it to these steps.
Bring your app idea or existing code and we will map it to these steps.
Book a Consultation

Case Studies

View All Success Stories

Holistic Wellcare Advisers

HealthTech / Wellness Marketplace
Wellness sessions rarely happen at a desk. The HWA mobile app brings the practitioner and client experience to a phone, letting clients browse packages and book at-home, virtual, or in-person sessions while practitioners manage availability, bookings, and package payments wherever their day takes them, between sessions or on the road.
Mobile App DevelopmentSession BookingPackage & Payment TrackingPractitioner & Client Experience
Read Case Study
HWA mobile app - case study card
HWA mobile app - case study results on hover
HWA mobile app - case study card
100%CONFLICT-FREE BOOKING
24/7SELF-SERVE BOOKING, NO CALLS NEEDED
100%AUTO-SYNCED GOOGLE & OUTLOOK CALENDARS

Zoundslike

EdTech / AI Language Learning
Zoundslike does the hard part well – AI-powered, game-based English practice paired with live peer-to-peer speaking sessions. The platform wasn’t carrying its weight: core flows were incomplete and unstable, no mobile app existed yet, and unresolved audio issues undermined the entire speaking-practice experience on iOS.
Product UX/UIAI Feature DesignWeb App RebuildiOS + Android DevelopmentMarketing Website
Read Case Study
Zoundslike - case study card
Zoundslike - case study results on hover
Zoundslike app mockup with key project results
125k+DOWNLOADS
24k+ACTIVE USERS
100k+GAMES PLAYED

Enlace Ganadero

Agriculture / Livestock Trading Marketplace
Enlace Ganadero does the hard part well – connecting livestock buyers and sellers across the Americas for deals worth as much as a house. The starting prototype wasn’t carrying its weight: buyers had only a handful of photos, no way to compare listings, and no real trust signals before committing.
Mobile App DevelopmentBackend DevelopmentAdmin DashboardWebsite Design & Development
Read Case Study
Enlace Ganadero - case study card
Enlace Ganadero - case study results on hover
Enlace Ganadero app mockup with key project results
10+CATEGORIES TO BUY, SELL, OR BID ON
2WAYS TO SELL, DIRECT LISTING OR AUCTION
2LANGUAGES, SPANISH & ENGLISH, YOUR CHOICE

Industries We Build React Native Apps For

See All Industries →
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Ecommerce
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→
Social Networking
→

Why Choose Syndell as Your React Native App Development Company

99%
Clients Recommendation
12+
Industries Served
1539+
Projects Delivered
618+
Happy Clients
✓
Full Lifecycle React Native Development
✓
Agile & CI/CD Delivery
✓
Established Development Team
✓
Verified Client Reviews
✓
Flexible Engagement Models
✓
Security & Confidentiality

What Our Clients Say About Us

Clutch rating logo
Syndell has demonstrated excellent problem-solving skills, quickly addressing any issues that arise. The team is responsive and attentive to the client’s needs, and internal stakeholders are impressed with the service provider’s value-driven approach.

Nicole Powell

Owner, Branding Marketing Firm

The partnership with Syndell has provided the client with consistent good traffic for several years. Despite the time differences, the vendor has stayed responsive and is easily accessible via Skype, email, and other outlets. Their timely and helpful approach is commendable.

Jared White

Owner & Marketer, JBZ Beats Inc.
Thanks to Syndell’s efforts, the client started to get more leads. The client was very happy and excited about the results. Syndell provided exceptional communication and support throughout the engagement. The client described the whole process as easy.

Allan Brown

Principal, Resumes by Allan Brown

Thanks to Syndell’s efforts, the client received positive reviews and increased traction on their website. The team was professional, timely, and responsive to the client’s needs. They also provided valuable recommendations that facilitated the client’s decision-making process.

Raunak Shah

Business Owner, GenNext Learning

Syndell delivered all four milestones on time, ensuring the project progressed as planned. Their team demonstrated their expertise, managed the project efficiently, and answered questions promptly. They also communicated effectively through virtual meetings.

Buck Mclnnis

CEO, Tampa Bay Steel Corp

Syndell successfully delivered a fully functional platform. They excellently utilized Slack and Skype for all feedback and requests. Above all, their speed and responsiveness were the highlights of the engagement.

Tobi Lawson

Co-Founder, Praiki Technologies Ltd

Syndell continues to satisfy end clients with their excellent development work. Leading a straightforward and efficient workflow, the team follows directions well and collaborates closely with the client. Their attention to detail and excellent customer support are highlights.

Jay Thakker

President, Imprografix, LLC
Syndell has delivered an excellent product that matches the client’s requirements. They have been highly responsive and flexible in meeting tight deadlines. They’re an approachable team that offers quality services.

Paul Smith

Managing Director, Viva Digital

The client was very satisfied with the end product, describing it as amazing and reasonably priced. Syndell impressed with their strong project management and communication skills, which helped them ensure a seamless customer experience.

Pawel Tugeman

CEO, Lazy Rida Beats

GoodFirms rating logo
I’ve been thoroughly impressed with the expertise of Syndell. Their support is exceptional. They’ve swiftly addressed any issues that arise. I’ve already experienced great results with their SEO and website development, and I’m looking forward to exploring their mobile app development and AI development services soon. I highly recommend them to anyone looking for reliable and innovative solutions!

Nicole Powell

Owner at HALCON

We have worked with Syndell Technologies for nearly 10 years as our outsourced partner and found their team to be reliable, available, prompt with a broad range of expertise.

Paul Smith

Owner of Viva Digital

Syndell has been a tremendous asset to our tax consulting firm. They built a modern, professional website tailored to our clientele and also developed a secure, custom software system for managing client records and compliance workflows. The team is technically strong, responsive, and easy to communicate with. We’ve already seen time-saving improvements internally. Highly recommend them to any professional service business needing a digital upgrade.

Garima Bhandari

Partner at G N Financial Services

Google rating logo
Excellent service, quick response to changes and editing the website, professional service that is hard to find these days.

Zohany Pulido

Owner, QPI, Inc

Fantastic experience with Hiren building our website. He was very skilled and creative and fast. I will definitely work with him again! I’d give him 10 stars if possible.

Candace Pendleton

Owner, Commodities University

Engagement Models and Pricing

Model
Best For
Billing
Scope Changes
Fixed Price Model
Best For
An MVP with Defined Screens and Features
Billing
By Milestone
Scope Changes
Change Request
Time and Material Model
Best For
An App Whose Scope Changes with User Feedback
Billing
Monthly, by Hours Worked
Scope Changes
Reprioritized Each Sprint
Dedicated Team Model
Best For
A Long Roadmap Across Web and Mobile
Billing
Monthly, per Developer
Scope Changes
Directed by You Daily
Every app is scoped individually. Share your budget range on the call and we will show what it covers, then send an itemized proposal. Need extra engineers instead? Hire React Native developers.
Get a Quote

Recognitions That Reflect Our Commitment

Our expertise has been consistently acknowledged by global platforms and independent reviewers. From mobile app excellence to AI innovation, we’ve earned the trust of leading industry authorities and certification bodies.
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Most Reviewed Blockchain Company 2026

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ISO 27001 Certified

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Top IT Services India 2022

Working Across Time Zones? That's Fine.

We provide our services in the countries below, and we plan our hours around yours.
USA  ·  UK  ·  UAE  ·  Canada  ·  Australia  ·  India
Schedule a Meeting
Areas We Serve →

FAQs

How Much Does React Native App Development Cost?

The cost depends on the number of screens and features, back-end and API work, design depth, third-party integrations, and whether you need iOS, Android, or both. We quote a fixed price for defined scopes and monthly rates for evolving ones. Share your requirements on a call and we will send an itemized proposal.

How Long Does a React Native App Take to Build?

Timelines depend on the number of screens, integrations, design depth, and how many stores you launch on. We give a timeline after scoping and break it into milestones, so you can see progress every sprint. A focused first release ships sooner than a full product, and we can plan one with you.

How Will We See Progress If Your Team Is in Another Time Zone?

We agree overlap hours at kickoff and report through Slack, email, and video calls. After each sprint you get a test build on TestFlight and Google Play internal testing to try on your own phone. Syndell has offices in Middletown, Delaware, Manchester, UK, and Ahmedabad, India.

What Are the Downsides of React Native?

Graphics-heavy games and apps built on brand-new platform features may suit native code better. Some device features need custom native modules, app size can exceed pure native, and version upgrades take planning. For most business and consumer apps these trade-offs are manageable, and we flag them during scoping.

Should I Choose React Native or Flutter?

Choose React Native if your team knows JavaScript or React and your interface follows standard platform patterns. Choose Flutter for highly custom, animation-heavy interfaces that must look identical everywhere. We build in both, so we recommend after reviewing your features, team, and roadmap. See our Flutter app development page.

Can You Take Over or Upgrade an Existing React Native App?

Yes. We start with an audit of the code, dependencies, and build pipeline, then tell you whether to fix it, upgrade in stages, or rebuild. You get that recommendation in writing before we touch production code, and we keep the current app available to your users while the work is done.

Can You Add AI Features to a React Native App?

Yes, when the product needs them. Cloud AI services are called through your back end, which keeps API keys off the phone. On-device models are possible through open source libraries such as React Native ExecuTorch, which supports only the New Architecture. We compare cost, privacy, and speed before choosing.

Our Blogs

All Posts
Flutter vs React Native 2026: Which Framework Fits Your Business?
view 6 Min Read
  • February 19, 2026
Business
Flutter vs React Native 2026: Complete Guide for Business Owners

Flutter vs React Native in 2026: See which framework fits your business as California mobile app experts compare costs, performance, and real project.

  • Yash Vyas
Are you too Making these MISTAKES when Developing React Native Apps
view 9 Min Read
  • May 27, 2024
Business
16+ Common Mistakes to Avoid When Developing React Native Apps

Discover the common pitfalls to steer clear of when developing a React Native app. Learn how to avoid mistakes and create a successful mobile application.

  • Dev Sonigra
react native local database
view 12 Min Read
  • February 24, 2023
Business
Best React Native Local Databases for Smart Applications

Explore the top local database options for creating smart React Native applications that work offline and provide a seamless user experience today.

  • Rohit Changani

Tell Us What Your App Needs to Do.

Share your idea or your existing code. We will review it before we talk and tell you honestly whether React Native fits. Want proof first? Browse our case studies.
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