Application Logic
Controls the actions, rules and workflows performed within the React Native application.
React Native Development Services for iOS & Android Apps
Unisam Technologies provides React Native development services for businesses and product teams building applications for iOS and Android from a shared mobile codebase.
We develop React Native applications with React, TypeScript and appropriate native integrations for products that require user accounts, backend APIs, custom interfaces, notifications, payments, device features and third-party services. Our React Native development work can cover new applications, existing React Native products, native integrations, application upgrades, migration projects and continued feature development.
React Native Applications
Build iOS & Android Applications With React Native
React Native allows application teams to build common product functionality for iOS and Android using React while retaining access to the underlying native platforms when required.
That does not mean every part of an iOS and Android application must be identical. Features that depend on specific Apple or Android APIs, SDKs or device capabilities can require platform-specific configuration or native implementation.
Unisam Technologies plans that boundary before development so the project has a clear understanding of what can remain shared and which functionality requires platform-specific work.
Navigation
Defines how users move between screens and different areas of the application.
Data Handling
Manages how application data is received, processed, stored and displayed.
API Communication
Connects the React Native application with backend systems and external services.
Account Workflows
Supports registration, login, profile management and other user account processes.
Reusable Interface Components
Creates shared interface elements that can be reused across multiple application screens.
Validation
Checks user input and application data before information is processed or submitted.
State Management
Controls application data and interface updates as users interact with the product.
Our React Native Development Services
Our React Native application development services can cover a complete new product or specific development work within an existing application.
Custom React Native App Development
We build custom React Native applications around defined users, functionality, workflows and backend requirements.
A custom React Native product can include:
- Account Registration and
Login
- User Profiles
- Dashboards
- Custom Mobile Interfaces
- Forms and
Workflows
- Notifications
- Payment Functionality
- API-Connected Data
- Maps and
Location
- Media Workflows
- Device Functionality
- Third-Party Integrations
The application structure is defined around the actual product requirements rather than starting with a generic mobile template.
Suitable for:businesses, startups and product teams that need a custom iOS and Android product developed with React Native.
React Native iOS & Android Development
We develop React Native applications for iOS and Android with shared application functionality where appropriate. Common product functionality can be maintained within the React Native layer while individual platform requirements are handled separately. This can help keep related functionality together without ignoring differences between Apple and Android platforms.
Platform-specific work may include:
- Permissions
- Application
Configuration
- Native SDKs
- Signing
- Notifications
- Build Settings
- Device
Capabilities
- Store Requirements
The final structure depends on the requirements of the application.
React Native TypeScript Development
TypeScript can be used to add static type information to a React Native codebase.
For new React Native projects, we can use TypeScript for areas such as:
-
React Components
- Application State
- Data Models
- Navigation Parameters
- API
Responses
- Service Interfaces
- Reusable Application Logic
Type definitions can make relationships between application data and functionality more explicit as the product grows. Existing JavaScript-based React Native applications can also be reviewed for incremental TypeScript adoption where appropriate.
React Native UI Development
React Native applications use React components to define application interfaces while rendering through the supported native platform environment.
We implement approved mobile interfaces around:
- Navigation
-
Reusable Components
- Application States
- Forms
- Lists
- Data-Driven Screens
-
User Actions
- Responsive Layouts
- Platform-Specific Behavior
Where the product requires different behavior on iOS and Android, the implementation can account for those differences instead of forcing both platforms into exactly the same interaction model.
React Native API & Backend Integration
Most production React Native applications communicate with systems outside the mobile codebase.
We can connect React Native applications with supported:
- REST APIs
-
Backend Applications
- Authentication Services
- Cloud Services
- Payment
Providers
- Analytics Platforms
- Business Systems
- Databases Through Appropriate
Backend Services
- Third-Party APIs
Before implementing an integration, we review the available API, authentication method, required data and actions the application needs to perform.
React Native Native Module Integration
Some application requirements need functionality that is not provided directly by the React Native application layer or an appropriate existing library. React Native can connect JavaScript application code with native functionality. Where required, a project can include integration with native code or supported native modules for platform-specific capabilities.
This may involve technologies such as:
- Swift: For
selected iOS-specific functionality.
- Objective-C: Where an existing iOS
integration or codebase requires it.
- Kotlin: For selected Android-specific
functionality.
- Java: Where an existing Android integration requires it.
Native development is added according to an actual product requirement rather than simply increasing the amount of platform-specific code.
Existing React Native App Development
We can work with existing React Native applications that require continued development.
This can include:
- Additional Features
- New Screens
- API
Changes
- Authentication Updates
- Dependency Updates
- Navigation Changes
- Native
Integrations
- Performance Investigation
- Bug Fixes
- Release Preparation
- React
Native Upgrades
We first review the relevant codebase and dependencies before defining the required changes.
React Native App Migration & Modernization
Existing mobile products can be reviewed for migration or modernization with React Native where there is a practical product or technical reason. The correct approach depends on the existing applications, backend systems, native functionality and release requirements.
Migration work can include:
- Rebuilding Selected Application
Workflows
- Recreating Mobile Interfaces
- Connecting React Native to an Existing
Backend
- Consolidating Duplicated Product Functionality
- Integrating Required Existing
Native Modules
- Replacing Selected Legacy Mobile Components
- Transitioning Functionality
in Stages
Migration does not automatically mean rewriting the entire product at once.
React Native Maintenance & Continued Development
A React Native product can require continued development as application requirements, APIs, dependencies and mobile platforms evolve.
Ongoing work can include:
- New Functionality
- Bug Fixes
- React
Native Upgrades
- Dependency Updates
- API Changes
- Native Integration Updates
-
Compatibility Work
- Interface Improvements
- Release Preparation
The maintenance scope is based on the requirements and current condition of the individual application.
React Native Development With React & TypeScript
React Native combines technologies from the React ecosystem with access to native mobile platforms. The technologies used within an individual project depend on its architecture and requirements.
01
Mobile Framework
React Native
React Native provides the framework used to create application interfaces and functionality that can run across supported native platforms.
02
UI Library
React
React provides the component model used to structure application interfaces and state-driven experiences.
03
Typed Language
TypeScript
TypeScript can provide typed application code for components, data models, APIs and other React Native functionality.
04
Programming Language
JavaScript
Existing applications may contain JavaScript, and JavaScript remains part of the React Native ecosystem.
05
JavaScript Bundler
Metro
Metro is used as the JavaScript bundler within React Native development.
06
JavaScript Engine
Hermes
Supported React Native projects can use Hermes as the JavaScript engine included within the React Native ecosystem. The final stack is selected according to the project rather than adding technologies that provide no practical requirement.
React Native With Expo or Native Project Configuration
A React Native project can be structured using a React Native framework such as Expo or with direct access to native iOS and Android projects. The appropriate approach depends on the application requirements.
React Native Modules & Platform-Specific Functionality
A shared React Native codebase can still access platform functionality when the application requires it.
Supported libraries may already provide the required capability. Where an appropriate library does not satisfy the product requirement, native implementation can be considered. The implementation method is selected after reviewing the individual feature.
01
Push Notifications
Connect supported application notification services and platform configuration.
02
Camera
Use camera functionality for image capture, scanning or other defined workflows.
03
Location & Maps
Access supported location services and mapping functionality.
04
Biometrics
Use supported device authentication capabilities where appropriate.
05
Bluetooth
Integrate supported Bluetooth functionality when required by the product.
06
NFC
Connect supported NFC features for applicable device workflows.
07
File & Media Access
Support appropriate file, image and media functionality.
08
Payments
Integrate supported payment or billing services according to product requirements.
09
Native SDKs
Connect third-party iOS or Android SDKs that require native configuration or code.
React Native New Architecture Support
Modern React Native applications use the framework's current architecture for communication, rendering and native integration. For projects that require architecture-related development, we can review areas such as:
- React Native version
- Application dependencies
- Native modules
- Native components
- Library compatibility
- iOS project configuration
- Android project configuration
Existing applications that were originally developed around older React Native architecture can require updates before or during a React Native version upgrade. The required work depends on the actual application and libraries it uses.
A framework upgrade should therefore be planned around compatibility rather than treated as a simple version-number change.
React Native Application Architecture & Codebase Planning
Using one React Native repository for related platform functionality does not automatically make an application maintainable. As the product grows, clear separation between application concerns becomes increasingly important. The final architecture depends on the scale and requirements of the individual product. Depending on the product, the React Native project can separate areas such as:
React Native Architecture Components
Interface Components
Reusable visual elements used throughout the application.
Screens & Navigation
Application routes, screens and user journeys.
Application State
Information that needs to be shared or managed while users interact with the product.
Data Models
Defined structures representing application information.
API Services
Communication with backend applications and external services.
Authentication
Login, sessions, account state and approved access behavior.
Local Storage
Information that needs to remain available on the device where appropriate.
Native Services
Functionality dependent on iOS, Android or native SDKs.
Business Logic
Rules and actions associated with the application's workflows.
Authentication Systems
Support registration, login, sessions and user access.
REST APIs
Send and retrieve application information from backend services.
Existing Software Platforms
Connect the mobile application with an existing web platform, SaaS product or business system.
Backend Services
Use server-side services for protected functionality and business processes.
Cloud Services
Integrate appropriate cloud functionality where required.
Firebase Services
Use selected Firebase capabilities where they match the application requirements.
Analytics Platforms
Track defined application events and product usage.
Payment Providers
Connect supported payment functionality where required.
Third-Party APIs
Integrate external services where suitable documentation, permissions and technical access are available.
Project Structure
How the application is currently organized.
React Native Version
The framework version and related upgrade requirements.
Dependencies
Libraries, native modules and integrations currently used by the product.
Backend Connections
The APIs and services required by the application.
Native Code
Any Swift, Objective-C, Kotlin or Java components already present.
Build Configuration
Current iOS and Android project configuration.
Known Issues
Bugs, technical limitations or incomplete functionality already identified.
Requested Development
The new functionality or improvements the product now requires.
Upgrading an Existing React Native Application
React Native applications may require framework upgrades as the ecosystem and native platforms change. An upgrade can involve more than changing the React Native package version. Before upgrading an existing application, relevant areas can include current React Native version, Node.js requirements, iOS dependencies, Android dependencies, CocoaPods configuration, Gradle configuration, React Native libraries, native modules,deprecated APIs, build tooling, and application tests.
React Native Version Upgrades
Move an application toward an appropriate supported React Native version based on its dependencies and product requirements.
Dependency Updates
Review packages that require upgrades, replacement or configuration changes.
New Architecture Compatibility
Review native libraries and custom modules for compatibility with current React Native architecture requirements.
iOS Build Updates
Resolve relevant changes in the application's Apple platform configuration and native dependencies.
Android Build Updates
Resolve relevant Gradle, Android SDK and native dependency requirements.
TypeScript Modernization
Introduce or improve TypeScript usage where appropriate for an existing JavaScript codebase. The exact upgrade path is defined after the existing project has been reviewed.
Our Our React Native Development Process
Each React Native project is structured around its users, platforms and required functionality.
React Native Product Requirements
We review the application purpose, target users, iOS and Android requirements, existing systems and required functionality.
Application Scope & User Flows
We define the required screens, workflows, application states and user actions.
React Native Technical Planning
We plan the React Native structure, API dependencies, data requirements and any required native integrations.
Interface Development
Approved application interfaces and navigation are implemented with reusable React Native components where appropriate.
Application Logic & Integrations
We develop required functionality and connect backend APIs, authentication services, device features and external systems.
iOS & Android Testing
The application workflows are reviewed on the iOS and Android environments included within the project testing scope.
Release Preparation
Production builds and required configuration are prepared for the agreed app distribution process.
Continued React Native Development
Where included, we continue with approved updates, fixes and additional functionality after release.
Testing React Native Apps Across iOS & Android
Sharing application code does not remove the need to test each target platform. A React Native application can behave differently across iOS and Android because the underlying platforms have different permissions, device APIs, native SDKs, build systems, operating system behavior, notification configuration, and store requirements.
Functional Testing
Verify required application screens, actions and workflows against the approved requirements.
iOS Testing
Review the required functionality within the Apple environments included in the project.
Android Testing
Review the application on the supported Android environments included in the testing scope.
Interface Testing
Check required screens and states on representative device configurations.
API & Integration Testing
Verify communication between the React Native application and required services.
Authentication Testing
Review login, account, session and access workflows.
Native Module Testing
Check functionality dependent on native modules, third-party SDKs or platform APIs.
Permission Testing
Review relevant behavior when permissions are granted, denied or changed.
Application State Testing
Check defined loading, empty, error, offline and success states where applicable.
Release Build Testing
Review production application builds before store submission preparation.
The final test matrix is defined according to the application's actual target devices and functionality.
React Native App Development Cost & Timeline
The cost and timeline of a React Native application depend on the actual product requirements. Using React Native does not make every cross-platform project equal in complexity. Unisam Technologies reviews these requirements before defining the React Native development scope and preparing a project estimate. A useful estimate should consider factors such as:
Application Functionality
The number and complexity of workflows, screens and modules.
iOS & Android Requirements
How much application functionality can remain shared and where platform-specific implementation is required.
Interface Complexity
Custom components, interactions, navigation and application states.
Backend Requirements
APIs, databases, administration systems and server-side services required by the application.
User Accounts
Authentication, profiles, roles and permissions.
Native Functionality
Camera, notifications, location, Bluetooth, NFC, biometrics or other required platform features.
Third-Party Integrations
Payments, maps, analytics, external APIs and native SDKs.
Existing Codebase
Whether the project starts from a new application or requires work within an existing React Native product.
Framework Upgrades
The amount of compatibility work required for older React Native projects.
Testing Requirements
The platforms, devices, user flows and integrations included in the testing scope.
Release Requirements
Preparation required for Apple App Store and Google Play distribution.
Why Work With Unisam for React Native Development?
Unisam Technologies approaches React Native development as part of a complete software product rather than only a collection of mobile screens. Our broader software development work includes mobile applications, web applications, SaaS products, backend systems, APIs and connected digital platforms.
React Native Development FAQs
Ready to Build or Improve Your React Native App?
Tell us about your application, target users, iOS and Android requirements, existing systems and required functionality. Unisam Technologies can review the requirements and help define an appropriate React Native development scope for a new mobile product, an existing application or a modernization project.
