React Native App Development
A React Native App Development Company That Writes Native Too
React Native gets you two apps from one TypeScript codebase, right up to the point where you need the camera to behave, a background task to survive, or a library nobody has maintained since 2022. That native half is where projects stall, and it is the half we staff for.
Triple Protection Guarantee
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Triple Protection Guarantee:
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Years In Business
0
+
Engineers On Staff
0
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Avg. Engineer Exp.
0
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Where RN Apps Stall
Shared Codebase
Two Stores
Senior Engineers
Vetted Only
Timezone Overlap
Live Hours
Native Modules
Written Here
Delaware LLC
US Entity
OTA Releases
Policy Fixed
Reviewed Merges
Code Review
Version Upgrade Path
Maintained
Frame Budget
Documented
IP Assignment
Signed
Delivery Overlap
Fixed
Hours
App & Accounts
You
Trusted By Startups
What React Native Development Actually Buys You
React Native renders real platform components from JavaScript, so a list on iOS is a UIKit list and the same code on Android is a native one. That is the whole proposition: your team writes screens once in TypeScript and gets two apps that feel like they belong on the device. What it does not remove is the native layer underneath, and a React Native app development company earns its fee in exactly that layer, where the bridge, the modules and the build pipelines live.
Stallyons is registered in Delaware as a US company, and our engineers work a time-zone window agreed before the project starts, with four-plus hours of daily overlap. You sign a US contract, run diligence on a US entity and pay one US invoice. Behind the work sits twelve-plus years of delivery across six continents and around thirty-five engineers, averaging four-plus years of production experience. Teams come to us for React Native app development services when the JavaScript is fine and the native side is not.
What A React Native Build Covers
A codebase your own team can carry: TypeScript throughout, a navigation structure that survives new screens, and components documented well enough that the next developer does not rewrite them by accident.
The native half done properly: Swift and Kotlin modules written and maintained by us rather than pulled from an abandoned package, with the platform permissions and background behaviour handled per store.
A version strategy, not a version freeze: upgrades planned on a cadence, the New Architecture adopted when your dependencies support it, and Hermes tuned rather than left at its defaults.
An over-the-air policy written down: what may ship as a JavaScript bundle, what must go through store review, and how a bad update is rolled back before most users ever fetch it.
Performance treated as a measurement: list virtualisation, re-render counts and startup time profiled on real mid-range handsets, not judged by how a simulator feels.
One accountable vendor: one contract, one invoice and one entity for legal and finance to run diligence on, instead of a JavaScript contractor pointing at a native contractor.
What To Ask Any React Native Development Company First
- Ask which native modules they have written themselves. A team that has only ever installed packages will meet the first hardware requirement it cannot install its way out of.
- Ask which React Native version they would start on and why. A team that always picks the newest is guessing, and so is a team that always picks whatever they used last year.
- Ask what their over-the-air rules are. Shipping JavaScript around store review is both an advantage and the fastest way to break production without noticing.
- Ask how they profile. Real answers name the tools and a device model. Vague answers about optimisation mean nobody has opened a flame graph on this codebase.
- Check the exit before you need it. Repositories, signing keys, store listings and cloud accounts sit in your own name from day one, so leaving is administration.
- Ask when they would tell you not to use React Native. A firm that has never turned the framework down is selling its bench rather than reading your product.
How A React Native Project Starts Here
Every project starts with a free 45-minute scoping session. No slide deck, no sales script. You bring the product, the team and the constraints; you leave with a framework recommendation, a scope and a timeline.
We are selective about new projects and cap how many we run at once, because the scoping is the product. If your app is mostly custom motion and your team writes no JavaScript, we will say so early.
Why Clients Choose Us
Full
Written IP Transfer
USA
Contract Entity
Yours
Stores & Signing
Named
Delivery Lead
Ready to build in React Native without the stalls?
What We Build In React Native
The React Native Development We Deliver
Every app is a different product, and the underlying jobs repeat: build the screens, write the modules the screens need, keep the version current, prove the frame budget and get it through review. These are our most common builds.
New React Native Apps
iOS and Android from one codebase
Single Repo
Brownfield Work
RN screens inside a native app
Side By Side
Native Modules
Swift and Kotlin behind a bridge
Full API
Shared Web App Logic
Types, hooks and rules reused
Reused Across Both
RN Upgrades
Version bumps, Fabric, Hermes
Up To Date
Over-The-Air Ships
JS fixes without store review
Same Day
Offline Data & Sync
Local store, queues, conflicts
Usable
Performance Tuning
Lists, re-renders and startup time
Profiled
Store Release Runs
Review, phased rollout, rollback
Shipped Clean
Support & Maintenance
Upgrades, fixes, releases, cover
Kept Current
Not sure React Native is the right call? Let us check.
Common Challenges
Why Do React Native Builds Stall?
Six patterns behind almost every React Native app that has to be rescued. All six start as a sensible shortcut.
Package Roulette
01
A critical feature rests on a community package with one maintainer and no commits since the last major version. It breaks on an OS update, and fixing it means learning somebody else's native code first.
Frozen On An Old RN
02
Upgrades get postponed because none are urgent. Two years later the jump spans several majors at once, and every dependency has to move on the same day.
Lists Dropping Frames
03
The feed scrolls beautifully on the developer's phone. On a three-year-old mid-range Android it stutters, because nothing was virtualised and everything re-renders.
OTA As A Get-Out
04
Over-the-air updates start as a hotfix path and become the release process. Nobody can say which bundle a given user is running, and store binaries drift months out of date.
Two Apps In One Repo
05
Platform checks spread until half the components have separate iOS and Android branches. The shared codebase that justified the framework is now two codebases wearing one folder.
Nobody Owns The Native
06
The team writes fluent TypeScript and nobody opens Xcode. Every build failure, signing issue or module change becomes a week of waiting on somebody else.
Recognise a few of these? Let us do it properly.
Our React Native Work
6 React Native App Development Services
Six ways to buy React Native delivery from one accountable vendor. Run one, or run several in parallel under a single contract.
Custom React Native Builds
01
A product built end to end in TypeScript: navigation, state, the native modules it needs, store submission and launch, with a named lead and a written plan you approve first.
Native Module Work
02
Swift and Kotlin written to spec and exposed to JavaScript as a Turbo Module, for the camera, Bluetooth, background work or SDK that no community package handles properly.
Version & Architecture
03
Old React Native versions brought current in stages, dependencies replaced where they are abandoned, and the New Architecture adopted once it is safe.
Brownfield Integration
04
React Native screens added inside an app you already ship, sharing navigation and session state, so you modernise one flow at a time instead of all at once.
Performance Rescue Work
05
Profiling on a real device matrix, then fixing what the trace shows: list virtualisation, re-render churn, bridge traffic, image handling and startup time.
Release & OTA Operations
06
Build pipelines, signing, phased store rollout and a written over-the-air policy, with our own API development practice standing behind the service layer.
Not sure which piece you need first? Let us scope it together.
Why Choose Us
What Makes Our React Native Development Different
The details that decide whether an app is still healthy three versions later, not on launch day.
A US Legal Entity
01
Stallyons is registered in Delaware. Your contract, your invoice and your legal recourse sit with a US company, not an unknown one.
We Write The Native
02
Swift and Kotlin modules are written and maintained in-house, so a hardware requirement is a task on the board rather than a blocked sprint.
Overlap You Set
03
You choose the hours we share with your working day, and stand-ups, reviews and escalations all happen inside that window.
Upgrades On A Cadence
04
React Native versions move on a planned schedule rather than in an emergency, so you never face several major upgrades and every dependency at once.
Reviewed Code
05
Every merge is reviewed against an agreed definition of done, on your board, where you can read it yourself.
One Contract
06
One contract covers the engagement, so procurement, legal and finance each deal with a single named counterparty.
Ready to see a React Native build done properly?
Our Process
From First Call To React Native Launch In Six Steps
A build process that settles the framework, the native modules and the release plan first.
Discovery
Understand the product, team and device targets
Scoping
Agree the framework, scope and cost model
Design
Navigation, state and the native module list
Contracting
NDA, IP assignment, access and onboarding
Release
Store submission, then phased rollout
Tune & Scale
Profile on device, then widen the release
Want to see how this maps to your roadmap?
Technology Stack
What Our React Native Developers Work With
The framework surfaces we build on and the engineering around them: native, release, data, backend.
React Native
RN 0.7x Releases
TypeScript 5
Hermes Engine
New Fabric
Navigation
State, Data & Storage
Redux / RTK
TanStack Query
MMKV Storage
SQLite
GraphQL Clients
Native Layer
Swift Modules
Kotlin Modules
Turbo Native Modules
Xcode Build
Firebase SDK Suite
Build & Release
Expo EAS Build
Fastlane CI
GitHub Runs
Over-The-Air Ships
App Store & Play
Quality & API
Jest & Detox Runs
Maestro Flows
Node.js Services
AWS Cloud Hosting
Sentry & Datadog
Who We Build This For
React Native Apps For Regulated And High-Volume Sectors
Eight kinds of product with different users and one shared need: two apps that behave the same way.
Fintech & Payments
Onboarding, KYC, card controls
Healthcare & HealthTech
Patient apps, records, reminders
Retail & Commerce
Catalogue, checkout, loyalty
EdTech & Learning
Lessons, offline content, tests
SaaS & Digital Products
Companion apps, billing, sign-up
Logistics & Field Teams
Routes, scanning, proof of job
Travel & Hospitality
Booking, boarding, itineraries
Real Estate & PropTech
Listings, viewings, tenancies
Working in another sector? See all industries we serve.
How We Compare
Your React Native Delivery Options, Compared
An honest look at your four delivery options.
| Capability | Native-Only Studio | Freelance RN Developer | App Template Vendor | Stallyons Technologies |
|---|---|---|---|---|
| Writing native modules | Their core skill | Packages only | ✕ Out of scope | Swift and Kotlin in-house |
| React Native version upgrades | Rarely their job | When it breaks | ✕ Vendor decides | Planned on a cadence |
| Over-the-air update policy | ✕ Not applicable | Ad hoc hotfixes | Vendor controlled | Written, with rollback |
| Adding RN to an existing app | Prefers a rewrite | ✕ Rarely attempted | ✕ Not possible | Brownfield, one flow at a time |
| Profiling on real devices | Standard practice | Simulator mostly | ✕ No visibility | Device matrix, traced |
| Release automation | Manual builds | Manual builds | Push-button | CI with phased rollout |
| Contracting entity & ownership | Varies | ✕ Marketplace terms | ✕ Platform lock-in | US-registered LLC, your accounts |
See the difference for yourself
Complete Engagement
Everything Included In Your React Native Project
From Scoping to Contracting to Delivery, One Vendor
Here is everything included when you build your app with us:
One React Native Build Price: No Hidden Fees, No Surprises.
Every React Native engagement includes all eight components above. One contract, one senior team, one predictable cost, no vendor sprawl.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free Codebase Review
A written read on your React Native version, dependency risk, native module gaps and frame budget, with the fixes ordered by what breaks first.
Included Free
Build Plan And Estimate
A phased build plan with scope, milestones, the native modules it needs and a transparent, itemised estimate for the engagement.
Included Free
Free Vendor Checklist
The questions we would ask any React Native app development agency about modules, upgrades and over-the-air rules, so you can test us too.
Included Free
Risk-Free Partnership
Our React Native App Promise
We stand behind every engagement with commitments that protect your investment.
01
Scope Agreed First
Scope, model, working hours and cost structure are written down and agreed before contracting, so nothing is discovered later.
02
Built to Last
Senior developers, code review, automated tests, security and accessibility audits, and clean, documented code you fully own.
03
IP And Access Protected
NDA and IP assignment are signed before access, permissions are scoped per person, and your accounts stay under your control.
Start your React Native build with confidence, backed by our Triple Protection Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"Stallyons took our Figma design and built it into a live web application, a cognitive game with level-based match play, messaging, a tutorial, and a directory that ranks users nationally. What impressed me most was their grasp of the code behind that logic, and the quality of the experience. Delivered on time with steady updates."
Jerry L.
Founder
PicCiti LLC
"We brought Stallyons in to absorb an overflow of work, and they delivered ten iOS and Android apps, from reporting to geo-location for logistics, plus several backend systems, owning design, development, and app-store submission. Everything stood out: code quality, speed, and reliability. Perfect code, on time, adopted company-wide."
William B.
Director
Amplo Solutions
FAQ
Frequently Asked React Native Questions
A React Native app development company builds iOS and Android from one TypeScript codebase, and takes responsibility for the native layer that codebase sits on. In practice that means navigation and state, Swift and Kotlin modules for anything the community packages do not cover properly, a version upgrade plan, over-the-air release rules, profiling on real handsets, and getting both binaries through store review.
React Native wins when your team already writes JavaScript or TypeScript, when you have a React web app whose types, hooks and business rules can be reused, when you lean on the mature native-module ecosystem, or when shipping a fix without waiting on store review matters. Flutter is the better answer for heavily custom or animated interfaces that must look identical everywhere, and we say so on our Flutter page.
Cost follows the number of screens, how many native modules have to be written rather than installed, whether an existing app is being integrated with, and how much backend already exists, so a figure before scoping is guesswork. Native module work moves it most. We scope first, then price, and itemise each phase so you can cut before you commit.
Yes, with the caveat that decides it. The framework renders real platform components and handles large products well, and the New Architecture removed the old bridge bottleneck. What it does not do is remove the native layer, so a team without Swift and Kotlin skills will hit a wall at the first serious hardware or background-work requirement.
You do, from the first day. The repositories, signing keys, Apple and Google developer accounts, cloud accounts and analytics all sit in your name, and NDA and IP assignment are signed before anyone gets access. Every module we write for you is assigned outright, with no licence-back.
Usually, and in stages rather than one jump. We read the dependency tree first, because the version number is rarely the problem: abandoned packages are. Each major is taken in turn with the app still shipping, unmaintained libraries are replaced or rewritten as modules, and the New Architecture is adopted only once your dependencies support it.
With a written policy rather than a habit. JavaScript-only changes may ship over the air; anything touching native code, permissions or store-reviewable behaviour goes through the stores. Updates roll out in stages with adoption and crash rate watched, and a bad bundle is pulled before most users ever fetch it.
Yes. Brownfield integration lets you host React Native views inside an app you already ship, sharing navigation and session state with the native screens around them. It is how most established products adopt the framework: one flow moves across, it is measured against the old one, and the rest follows only if the numbers hold.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready To Build Your Product In React Native?
Get a free consultation. We will read your codebase, name what is slowing it down, and send a written proposal.
