React Native App Development Company for iOS and Android

Two native apps mean two codebases, two test cycles and two invoices. Kwebby's React Native app development service builds your iOS and Android apps from one TypeScript codebase, so you pay for one build. You get a fixed quote, test builds on your own phone and 100% ownership of the code. Pricing starts at $2,999 for up to 8 core screens, user login and a managed backend.

Key Takeaways

• Kwebby builds iOS and Android apps from one React Native codebase, so you fund one build instead of two.
• The $2,999 starting price covers up to 8 core screens, user login and a managed backend such as Firebase or Supabase.
• Most projects take 6 to 12 weeks from the first call to store submission, and your fixed quote states the exact timeline.
• Payments follow a 10%, 40%, 50% schedule tied to test builds you approve in the client portal.
• You own 100% of the source code, design files and build configuration, and Kwebby submits the app under your developer accounts.
• Kwebby also takes on existing React Native apps and quotes each fix or feature as a fixed-price milestone.

What Is React Native App Development?

React Native app development is the practice of building iOS and Android apps from one JavaScript or TypeScript codebase. The official React Native site says React primitives render to native platform UI, so the app uses the same native platform APIs as any other app. That is why a React Native app looks and feels native on each phone.

The approach fits startups and small businesses that want both stores at launch without paying for two teams. Large companies use it too: the React Native showcase lists apps from Meta, Microsoft and Shopify.

Kwebby has completed 1,200+ projects for clients across the US and worldwide. On the free call, ask for examples from your industry. Kwebby shares live sites, app store links and references that match your project.

What the $2,999 Starting Price Includes

The $2,999 starting price covers a React Native app with up to 8 core screens, user login and a managed backend such as Firebase or Supabase. The timeline is typically 6 to 12 weeks. Payments split 10% to start, 40% at the midway milestone and 50% on delivery.

The service includes six core capabilities.

One Codebase, Two Stores

Kwebby ships to the App Store and Google Play from one TypeScript codebase. Every new feature reaches all users together.

Native Device Features

Camera, GPS, maps, biometrics, Bluetooth and in-app payments work through native modules. When a library does not cover your need, Kwebby writes a custom Swift or Kotlin module.

Expo and EAS Builds

Expo and EAS give you faster builds and over-the-air updates for small fixes between store releases. Expo's documentation describes EAS Update as a service that delivers JavaScript, styling and image changes without a new store build. Changes to native code still need a fresh build and store review.

Push Notifications

Kwebby sets up targeted messages through Expo Notifications, Firebase Cloud Messaging or OneSignal.

Offline Support

Local storage keeps key screens working without a signal and syncs data later. Field service and inspection apps depend on this.

Store Submission

Kwebby prepares listings, privacy details and release builds for Apple and Google review. The full list of rates for other project types sits on the pricing page.

How the Kwebby Process Works

The process has three steps, and you see working software at each one.

1. Free call and fixed quote. Book a call during US hours, Monday to Friday, 9 AM to 6 PM ET. Kwebby lists your screens, device features and integrations, then sends a fixed quote with milestones.
2. Test builds at every milestone. You pay 10% to start. Kwebby sends a test build to your iPhone or Android phone at each milestone, and you approve it in the client portal. The 40% payment is due at the midway milestone.
3. Store release and handover. Kwebby submits the app to both stores under your developer accounts and hands over the code and build setup. You pay the final 50% on delivery.

React Native vs Native vs Flutter

React Native suits most business apps because it shares the JavaScript and TypeScript skills used on the web. A team with a web product can reuse business logic, API code and developers across web and mobile.

Native Swift and Kotlin apps fit products with heavy 3D graphics or features that need new platform APIs on release day. They cost more because each platform needs its own code. Flutter also builds cross-platform apps, but it uses the Dart language and draws its own interface instead of native components.

Kwebby recommends React Native for most business apps and explains the trade-offs on your first call. If you need a Windows, macOS or Linux app instead, see Kwebby's desktop app development service.

Hire a React Native Developer or a Full Team?

Kwebby supports both models. For a new app, it delivers the full project at a fixed price, including design, backend and store launch. For an existing React Native app, it reviews the codebase and quotes each fix or feature as a fixed-price milestone.

Either way, you work with a team that already knows Expo, React Navigation, native modules and the App Store review process. You do not pay for a developer to learn on your project. Kwebby's wider services cover web and desktop work if your product needs it.

What Kwebby Builds with React Native

Kwebby builds the app types below for startups and small businesses. Each app connects to a backend that Kwebby builds or to your existing API, and admin panels let your team manage users, content and orders without code.

• Booking and appointment apps
• Marketplace and on-demand service apps
• Loyalty, rewards and membership apps
• Field service and inspection apps with offline mode
• Fitness, wellness and habit tracking apps
• Companion apps for existing web platforms, such as a mobile front end for web apps and SaaS products

Money apps need extra planning. Payments, lending and banking products fall under Kwebby's fintech app development page, which starts at $7,999 and runs 10 to 20 weeks.

What Affects Cost and Timeline

Scope sets the price. The $2,999 starting point assumes up to 8 core screens, login and a managed backend. Apps with payments, real-time chat, maps or custom backends cost more, and Kwebby lists every feature in the fixed quote.

Timeline follows the same drivers. Most apps take 6 to 12 weeks, and a focused MVP can launch faster. If you only need a first release to test an idea, compare this page with Kwebby's MVP development service, which starts at $3,499 and lists a 4 to 8 week timeline. Kwebby's broader app development service starts at $400 and runs 1 to 20 weeks, depending on the project.

Kwebby offers 50% off your first project. The discount applies to the first fixed quote only.

Best Practices When Hiring or Planning a React Native App

List Screens and Device Features First

Write down every screen, every device feature and every integration before you request quotes. A list of 8 screens with login prices very differently from an app with maps, chat and payments. The clearer your list, the closer the fixed quote lands to the final bill.

Launch One Core Flow

Most founders get more from a small first release. Pick the single flow users need most, such as booking or loyalty points, and ship it. Add other features after real users respond.

Test on Real Devices

Ask whoever builds your app how they test. Kwebby tests every build on real iPhones and Android phones as well as simulators. Tests cover different screen sizes, slow networks and older OS versions your users still run.

Plan for Store Review Early

Apple and Google review every app before release. Kwebby prepares privacy labels, data safety forms, test accounts and screenshots so reviewers have what they need. Missing details are a common cause of delay.

Keep Your Own Accounts

Publish under developer accounts in your name. Kwebby submits under your accounts and hands over the repository and store access at delivery, so you can move the project to any team later.

Results to Expect

At delivery you receive a working app in both stores, the full source code, the design files and the build configuration. You also have a repeatable way to ship fixes: small JavaScript changes can go out as over-the-air updates through Expo, and larger features ship through standard App Store and Google Play releases.

Kwebby does not promise downloads or revenue, because those depend on your market. It promises a fixed price, working test builds at each milestone and a codebase any React Native developer can pick up. To see finished projects, ask on the free call for live sites and app store links that match your idea.

Final Thoughts

React Native lets you reach iPhone and Android users with one build, one test cycle and one team. Kwebby adds a fixed quote, milestone test builds on your own phone and full code ownership, so you know the price and the progress at every step. Write down your screens and device features, then request a fixed quote or book a free call during US hours. You will have a milestone plan within one business day.