All Case Studies
Why React teams bring their app to us
React Native suits teams that already think in components and TypeScript. Here is what you get when Dcrayon builds or extends your React Native app.
We tell you if Flutter fits better
Honest framework advice Flutter is our lead mobile stack, so we have no reason to push React Native on you. We recommend it when your team already writes React, or when the app must share code with a React web product.
Shared code, planned on day one
Web and mobile together We map which parts can live in a shared TypeScript package: API clients, validation, data types, and state. Screens stay native to each platform, so the app still feels right on iPhone and Android.
Current React Native, not a legacy setup
New Architecture and Hermes New builds start on a current React Native release with the New Architecture and the Hermes engine switched on. That keeps your app close to where the framework and its libraries are heading.
Native modules when JavaScript is not enough
Swift and Kotlin bridges Bluetooth, background location, or a payment SDK sometimes needs native code. We write the Swift or Kotlin module behind a typed interface, so your JavaScript team can call it without opening Xcode.
Over-the-air fixes, used carefully
Expo updates Expo updates let small JavaScript fixes reach users without a full store release. We use them within Apple and Google store rules, and still send native changes through normal review.
A named lead and a shared group chat
How clients reach us On the Sygnioin website and Flutter app, the client had a named team lead and a WhatsApp group with the developer, video editor, and SEO specialist. React Native clients get the same setup, plus test builds on their own phones.
HOW WE WORK ON APPS
Meet the people who would build your React Native app
Get to know Dcrayon before the scoping call. This short film covers who we are and how we treat client work, so the call itself can go straight to your app.
What we build in React Native
Most React Native work we take on falls into three shapes. Each one starts from what your team already has in JavaScript.
Step 1: A new app for iOS and Android
New builds One TypeScript codebase, on Expo or bare React Native depending on the native features you need, with release builds signed for the App Store and Google Play.
Step 2: A mobile app beside your React web product
Web plus mobile For SaaS and marketplace teams with a React or Next.js site, we add a mobile app that reuses your types, API layer, and business rules, so a rule change is written once and reaches both.
Step 3: Rescue and upgrade of an existing app
Takeovers An app stuck on an old React Native version, with failing builds or abandoned libraries. We audit it, upgrade it step by step, and replace packages that no longer have maintainers.
The React Native stack we work with
Well-kept libraries with active maintainers, picked for your app rather than out of habit.
Every choice below is written into the scope with the reason for it, so the next developer who opens the repo understands why it is there.
TypeScript and React Native
Typed code across the app and any shared packages, which catches many mistakes before a build ever reaches a phone.
Expo and EAS Build
Expo speeds up common work such as camera, notifications, and file access.
EAS Build produces signed store builds in the cloud, so not every developer needs a Mac.
React Navigation or Expo Router
Stack or file-based navigation with deep links set up, so a link in an email or an ad opens the right screen in the app.
TanStack Query and Zustand
Server data cached and refreshed by TanStack Query, with light local state in Zustand, or Redux Toolkit where a larger app needs it.
Firebase and Sentry
Push notifications through Firebase Cloud Messaging, and crash and error tracking through Sentry or Crashlytics, so every issue arrives with a stack trace.
Jest, Detox, and Maestro
Unit tests in Jest with React Native Testing Library, and on-device tests in Detox or Maestro for login, sign-up, and payment flows.
How we start, plan, and check a React Native app
A free check of your idea or code, a written plan, and our own review tooling. Here is what each one covers for React Native.
Growth Intelligence (React Native check)
We check your concept or existing repo for free. For a live app we read the package list, the React Native version, crash reports, and slow screens, then list the fixes in order of payoff.
Dcrayon Growth Engine (app plan)
A written plan that splits the app into releases you can test on a phone. It names what is shared with web, what is native, and what waits for a later version.
Dcrayon AI (review tooling)
In-house tooling that helps our developers write tests, spot unused packages, and watch bundle size. A developer reads and approves every change before it ships.
How a React Native project runs
Three stages, each ending with something you can hold in your hand.
Step 1: Free app check
Step 1 We review your idea, designs, or current codebase and say plainly whether React Native or Flutter suits it, and why.
Step 2: Plan and build
Step 2 We agree the first release, set up the repo and build pipeline, and send test builds to your phone as screens are finished. Your feedback goes straight into the next build.
Step 3: Launch and maintain
Step 3 We prepare store listings, privacy forms, and review notes, then submit. After launch we keep libraries current and plan the next features with you.
Send us your React Native idea or repo
We send back a framework recommendation, a first-release scope, and the questions that decide cost.
4.9
GoodFirms rating from 8 verified reviews, as of October 2026
What our clients say
A senior person on every project. Weekly updates. No offshore handoffs.
“We hired Dcrayon to build the website and Flutter app for Jikra, our e-commerce brand, and they've now taken on managing our Amazon store and social media as well. Over eight months, they delivered strong work across every area. We got excellent value for our budget and look forward to continuing our partnership with them.”
“I've had a great experience working with Dcrayon on the Sygnioin website and Flutter mobile app. My assigned team, led by Anhad, included a developer, video editor, and SEO specialist who communicated through a dedicated WhatsApp group. Their friendly and collaborative approach made the entire process smooth, and I'd recommend asking for the Anhad team if you decide to work with Dcrayon.”
“I went to Dcrayon because I wanted Proven on a platform we own rather than a rented one, and that's exactly what they delivered. The storefront carries our full range, from table-top purifiers to industrial RO plants, and the admin side runs the actual business - orders, pricing, inventory, dealer enquiries, demo bookings, and installation requests all in one place.”
WHY DCRAYON
Why product teams choose Dcrayon for React Native
A mobile team that also builds the backend, and says so when another framework fits better.
Good React Native work needs both sides of the bridge: strong JavaScript, and enough Swift and Kotlin to handle native modules and store builds. Dcrayon has built websites, apps, and custom software since 2016, from offices in Delhi and Sheridan, Wyoming, with a team in London.
Scope before code
You get a written scope and a list of what moves the cost before any work starts. Changes are agreed in writing, not discovered on an invoice.
Developers first, tools second
A developer you can name leads the app. Our tooling handles repetitive checks; people make the design and code decisions.
Builds on your phone
You test real builds through TestFlight and Google Play testing tracks, so progress is something you can tap, not a slide.
Your code, your accounts
The repository, the Apple developer account, and the Google Play console stay in your company's name. If you move on, there is nothing to hand back.
Help beyond the app
When the app needs an API, a database, or a web admin, the same group at Dcrayon builds it, so nobody has to translate between vendors.
Store releases handled
Signing certificates, provisioning profiles, Play App Signing, store listings, and replies to reviewers are handled by us, so your team stays on the product.
Real client work, with the receipts
200%
Improvement in conversion performance
Proven Water Industries
Proven's growth on Amazon over the engagementDcrayon's work on Proven's Amazon account has run as a long-term growth programme rather...
Keratine Professional
What is in place on Keratine Professional's accountOn Amazon.in today, the brand's lead listings name the product type, the hair concern...
3,400%
Sales growth on Amazon India
GetSetNova
Sales up 3,400% on Amazon IndiaOver the engagement, GetSetNova's sales on Amazon India are up 3,400%, and the brand holds Amazon Best...
McCormick & Company
What changed on McCormick's front endThe front end now loads non-essential scripts after the main content, runs third-party tags through...
Roundglass
What changed for Roundglass's HR team, IT and new employeesAccount creation, group membership and licence assignment now follow the...
GRYT Health Labs
What GRYT shoppers can do on the storeShoppers can check the brand's licence and ownership details, compare single units with packs of...
Daddy of Tastes
What the Daddy of Tastes kitchens and riders work withCustomers can order from the full menu, pin their exact location, pay through...
Instacertify
What Instacertify's visitors could doVisitors could search for a certification from the first screen, see two clear next steps, and move...
Northern Tile Distributors
The storefront delivers a clean shopping experience on both desktop and mobile. Page load times improved significantly, the add-to-cart rate...
RAA Logistics
What RAA's customers and team have nowProspective customers can find the exact service they need, read what it covers, see who runs the...
Find out if React Native fits, before you write a line of code.
Send us your idea, designs, or repo. We will tell you whether React Native suits it, what can be shared with your web app, and what the first release should hold.
A straight answer on React Native versus Flutter for your app
A map of the code your web and mobile apps can share
A first-release scope you can take to any team
A developer on the call, not a sales script
Guides for choosing a React Native partner
Reading for founders and product leads deciding how, and with whom, to build their React Native app.
Flutter vs React Native for Startups: Which to Choose
A side-by-side look at both frameworks from a team that builds in both. Useful if your developers know React but you are still weighing Flutter for the app.
How to Choose a Mobile App Development Company in India
Questions to put to any React Native vendor in India: who writes the native modules, who owns the store accounts, and how you will see progress each week.
Where to Check Reviews of App and Software Companies
How GoodFirms and Clutch verify reviews, and how to read them when you are shortlisting React Native developers on client satisfaction.
Question & Answer
Frequently asked questions
Questions teams ask before starting a React Native build with us.
Both reach iOS and Android from one codebase. We lean toward React Native when your developers already write React and TypeScript, or when the app should share code with a React website. For a fresh start with no JavaScript in the picture, we often suggest Flutter, our main mobile stack.
Business logic shares well: API calls, data types, validation, and state rules can sit in one TypeScript package. Screens usually differ, because mobile layouts, gestures, and navigation work differently. React Native for Web can bring some components across when the design allows it.
Expo by default, because it handles builds, updates, and many device features with less setup. We move to a custom development build or the bare workflow when the app needs native code that Expo config plugins cannot cover, and we explain the trade-off first.
Yes. We start with an audit of the React Native version, dependencies, build setup, and crash reports. Then we fix whatever blocks releases and upgrade in small steps, so the app keeps shipping while the codebase improves.
The number of screens and user roles, native features such as payments, maps, or Bluetooth, offline needs, the backend and admin behind the app, and how much testing each release needs. The free review turns these into a scope you can price against.
As of October 2026, our GoodFirms profile holds 8 verified reviews averaging 4.9, and our Clutch profile holds 7 reviews, also at 4.9. Our two app reviewers, Jikra and Sygnioin, hired us for Flutter apps plus their websites, not React Native. On a call we can walk you through how we would run your React Native project.
Yes, some. React Native ships new versions through the year, libraries follow, and Apple and Google keep raising the SDK and target API levels they accept for app updates. We plan small, regular upgrades so the app never falls far behind, and we watch crash reports after every release.
Get a free review of your React Native app plan
A free look at your app idea or existing code, and a written plan for the iOS and Android build.
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Get a free consultation and custom marketing strategy from our expert team.
Bring the numbers you already have. We will read them against what we see across 500-plus campaigns and show you where the real opportunity sits.
If we are not the right fit for the work, we will tell you that too.