Unlock Seamlessness and Versatility with Comprehensive Cross-Platform App Development Services

At OnGraph, we pride ourselves on being a leading cross-platform app development company that delivers unparalleled user experiences across multiple platforms. When you hire cross-platform app developers from OnGraph, you gain access to a team proficient in cutting-edge technologies like React Native, Flutter, and Xamarin.

Our specialized developers skillfully employ languages such as JavaScript and Dart, alongside databases like MongoDB and Firebase, to craft apps that are both scalable and high-performing.

With an extensive portfolio comprising hundreds of successful cross-platform projects, our services cover everything from meticulous design to rigorous testing and ongoing support. We offer holistic, future-proof solutions, that not only meet your current business objectives but also position you favorably for emerging trends and technologies.

Experience the OnGraph difference and elevate your brand with our robust, cost-effective cross-platform apps.

  • Top Cross-Platform Frameworks
  • Seamless Integration with Existing Systems
  • Optimized UI/UX Across Platforms
  • Utilizing Microservices Architecture
  • Adherence to CI/CD Pipelines
  • ISO 27001-Certified Security Measures
  • 24x7 Support and Continuous Maintenance
  • Cloud and On-Premise Solutions

Top Mobile App Development Company, Accredited By

Our commitment to quality and focus on our customers' needs has made us a go-to resource for companies interested in responsive web app development and related technologies.

Top Mobile and Web Development Company in 2018 with 4.7/5 ratings

4/5 star for the work environment and learning opportunities pr

We made 5/5 star for quality, reliability, ability and overall

We earned 3.9 stars, 94% recommended and 92% Approve of CEO

Go Beyond Boundaries with Our Cross-Platform Application Development Services

With OnGraph, you gain the advantage of accessing an array of cross-platform app development services that can help your business reach a wider audience across multiple platforms without compromising on quality or performance.

React Native App Development Services

Our experts use React Native to develop cross-platform apps that are both efficient and effective, offering a seamless user experience. We employ the latest features and functionalities available within the React Native ecosystem.

Xamarin App Development Services

Using Xamarin, a Microsoft-owned technology, we build cross-platform apps that offer native performance. Our team is proficient in C# and leverages native libraries, ensuring your app provides an exceptional user experience.

Flutter App Development Services

We specialize in Flutter app development, enabling rapid and effective cross-platform app creation. Our team uses Dart programming language to build beautiful and highly functional apps that feel native on both Android and iOS.

PhoneGap/Cordova App Development Services

Hire cross-platform developers from OnGraph who leverage PhoneGap/Cordova to develop apps that run smoothly across various platforms. This ensures the highest level of code reusability while maintaining native app-like functionalities.

Cross-Platform Game Development Services

We offer cross-platform game development services using game engines like Unity and Unreal Engine. Our development process covers everything from design and development to deployment.

Cross-Platform App Consultation Services

Our consultation services aim to guide you in choosing the right cross-platform technologies and strategies that will best meet your business objectives.

Cross-Platform App Migration Services

We provide hassle-free migration of your existing native apps to cross-platform solutions with minimal downtime, ensuring that you reach a wider audience without sacrificing performance.

Cross-Platform App Integration Services

Our team integrates your cross-platform app with existing systems, databases, or third-party services. We employ best practices for API development and integration, making sure your app remains scalable and maintainable.

Custom Cross-Platform App Development for Enterprises

We offer bespoke solutions for enterprises requiring specific functionalities for their cross-platform apps. Our team is skilled in various frameworks and languages like React Native, Flutter, Xamarin, and Dart.

Our Portfolio

Latest Cross-Platform App Development Technologies We’re Skilled in

At OnGraph, we're not just following trends; we're setting them. Here’s how we bring the future to the present with the latest advancements in cross-platform tech.

React Native's Hermes Engine and Mobile App Capabilities

We employ the Hermes Engine to supercharge Android and iOS mobile apps, offering rapid load times and stellar performance.

Flutter 2.5's Performance and Tablet Optimization

Flutter 2.5 allows us to build faster, more responsive tablet apps that make the most out of Android and iOS capabilities, with minimal memory and CPU usage.

PWAs and PhoneGap’s Progressive Web App Support

We harness PhoneGap's latest features to create dynamic PWAs, offering a web-like experience with native features.

Cutting-Edge TV Apps with Xamarin

Stay ahead of the game by targeting a wider audience through Android TV and Apple TV apps built with Xamarin.Forms 5's new UI enhancements.

Android Wear & Apple Watch Apps

Using the newest features from leading frameworks, we craft engaging and useful apps for Android Wear and Apple Watch.

Desktop & Web Apps with Ionic’s Vue.js Integration

Leverage the power of Ionic's Vue.js integration for seamless desktop and web applications designed for efficiency and quick development cycles.

AI-Enhanced Interactivity

Enrich your cross-platform experience with intelligent features that automate processes and improve user engagement.

Business Intelligence for Data-Driven Insights

We integrate robust analytics solutions into your cross-platform app, offering predictive insights and understanding user behavior.

Cloud-First Approach with AWS Amplify

Experience unparalleled scalability and performance through AWS Amplify's latest cloud integration features.

Immersive AR/VR Experiences

Stand out in the market with unique and memorable user experiences through the latest in AR/VR technologies.

Get the Best of Both Worlds with Our Cross-Platform App Development Technical Stack


Our skilled developers use React Native to create cross-platform mobile applications that offer a near-native performance and user experience. We harness the full potential of this framework to deliver apps that are not only fast but also highly responsive and maintainable.

  • React Native UI Component Development
  • Real-time Data Syncing with React Native
  • API Integration in React Native
  • Custom React Native App Development


Specializing in Flutter, we craft visually stunning and functionally robust cross-platform applications. The framework allows us to build apps with rich UI and seamless animations, providing a delightful user experience across different platforms.

  • Flutter UI Design and Animation
  • State Management in Flutter Apps
  • Flutter Web Development
  • Custom Flutter App Development


Utilizing Xamarin, our team offers a single codebase solution that runs seamlessly on both iOS and Android. We focus on creating apps that deliver native-like performance while significantly reducing development time and costs.

  • Xamarin.Forms Development
  • Xamarin Native Development (iOS and Android)
  • Backend Services for Xamarin Apps
  • Custom Xamarin App Development


Leveraging PhoneGap/Cordova, we develop cross-platform applications that utilize web technologies like HTML, CSS, and JavaScript. The framework allows us to offer quick-to-market solutions without sacrificing quality or functionality.

  • PhoneGap UI Component Development
  • PhoneGap Plugin Development
  • API Integration in PhoneGap
  • Custom PhoneGap App Development


Our experts excel in using Ionic for creating high-quality, cross-platform applications. Combining native functionalities with web technologies, we offer scalable and feature-rich apps that provide a consistent experience across all platforms.

  • Ionic UI Component Development
  • Real-time Features in Ionic Apps
  • API Development for Ionic
  • Custom Ionic App Development

Launch Your Cross-Platform App in Just 5 Agile Steps!


Ideation and Planning

Together, we'll outline the scope of your cross-platform project, collecting both requirements and feature ideas for your app. A detailed roadmap will be laid out, complete with milestones, deadlines, and budget estimates.


UI/UX Design

In this phase, our talented design team collaborates with you to craft a visually stunning and user-centric design that aligns with your brand and resonates with your target audience. We'll produce wireframes, mockups, and interactive prototypes to ensure both aesthetics and usability are on point.



Our seasoned developers will get to work, leveraging the power of frameworks like React Native, Flutter, and Xamarin to ensure your app runs seamlessly across iOS, Android, and other platforms. Following the Agile methodology, we'll produce working iterations of your app for you to review and refine.


Testing, Deployment, and Quality Assurance

With an ISO 9001-certified QA process, we put your cross-platform app through rigorous tests to ensure it's bug-free and fully functional. The app will then be deployed to a staging environment for final review and approval. Continuous quality assurance will be a part of the package to ensure ongoing top-notch performance.


Maintenance, Optimization, and Updates

After launch, we'll keep a close eye on app analytics to identify areas that could benefit from optimization. Regular updates will be rolled out to ensure compatibility with new devices and technologies, and any emerging issues will be promptly addressed.

Offering Cross-Platform App Solutions Across a Spectrum of Industries

  • Healthcare

    We offer web tools like patient portals and telemedicine apps to streamline healthcare administration and patient care.
  • FinTech

    Our web solutions enable secure online payments, trading platforms, and financial analytics for FinTech companies.
  • Entertainment and Media

    Our web apps help artists and organizations manage content distribution, ticket sales, and marketing.
  • Retail and E-commerce

    We develop web apps for inventory management, customer engagement, and various portals to enhance the online shopping experience.
  • HRMS

    Our web tools simplify personnel management, payroll, and benefits administration for organizations of all sizes.
  • Insurance

    Our web apps enhance customer experience through efficient policy administration and claims processing.
  • Education and E-Learning

    We build web apps to manage online courses, student enrollment, and learning management systems.
  • Travel

    Our travel-focused web apps streamline booking reservations, trip planning, and customer engagement.
  • Banking

    We offer secure online banking solutions, including digital and crypto wallets, for banking organizations.

Frequently Asked Question

Cross-platform app development allows you to develop a single app that works seamlessly across multiple platforms (iOS, Android, web), saving time and development costs while ensuring consistent user experience.

We follow a 5-step process that includes Ideation and Planning, UI/UX Design, Development, Testing & QA, and Maintenance and optimization. This approach ensures timely delivery, budget adherence, and high-quality app development.

Yes, we offer ongoing maintenance, optimization, and updates to ensure your app stays compatible with new technologies and devices and remains secure.

We follow industry-standard security practices, including data encryption and secure APIs, to make sure your app is safeguarded against cyber threats.

Absolutely, we have the expertise to integrate advanced features like Artificial Intelligence, Augmented Reality, and Cloud Integration to enhance the functionality and user experience of your app.

Our team ensures that the app conforms to platform-specific guidelines while leveraging reusable code to maintain consistency in look and feel across platforms.