Cross-Platform App Development Services
As a cross platform app development company, we help you launch and scale products across iOS, Android, and web using a single, efficient architecture. This reduces development overhead, shortens time to market, and keeps your product consistent as it grows.
Whether you are starting from scratch or improving an existing product, we deliver customized cross platform mobile application solutions that handle real users, real data, and real business logic.
Let's create an app that shines on every platform!
Mobile Android/
iOS apps
Tablet Android/
iOS apps
TV apps for Apple
Android TV
Desktop &
Web Apps
Don't limit your app's potential! Talk to our team and define how your product should work across platforms.
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Years of experience in
software development
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Successfully delivered
projects
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Countries represented
by clients
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Successful cross-platform
app releases every year
“I cannot speak highly enough of the Onix entire team! They work incredibly hard, are always on time & ahead of schedule, and have been great at communication. I am so thankful I chose Onix Team to help me do that.”
The Clubhouse Founder
Eric Roberts
"Working with Onix-Systems has been an exceptional experience for our company. We were not only focused on having a positive user experience but also wanted to ensure commercial viability and technical capabilities. They built our solutions efficiently and effectively, delivering impressive speed without compromising quality.”
Technology advisor to MedTech Holdings
Will Golder
“It is a pleasure working with Onix. We have been growing as a team, and everyone was committed to success right from the beginning. Onix went the extra mile to deliver in time, and their approach to building on a single codebase has proven to be excellent.”
Product Owner 360° Shower
Barbara Dietz
“We have worked with Onix for over 5 years, they have been instrumental in developing a digital infrastructure that is helping to build a new model of healthcare. The team is very responsive to our needs as an early-stage company and we would not have been able to achieve our early success without them.”
Co-Founder & Executive Director at Gather Group
“They are very organized and diligent in the entire process, and communication with them was seamless. I’m so pleased with the work they did that I plan to continue working with Onix as my company continues to grow.”
President of Colorado Sports Video
Heberto Limas-Villers
"We are impressed with their professionalism and transparency in their work."
CEO, MiPaddle
Mark Innes
With our cross-platform development services, you'll get
Lower development cost
One shared codebase reduces build and maintenance costs across all platforms.
Reach a wider audience
Your application will be compatible with both iOS and Android devices, maximizing your market potential.
Consistent user experience
Unified design and logic ensure consistent behavior across all devices.
Faster time to market
Launch earlier by avoiding parallel native development cycles.
Easy maintenance and updates
Centralized updates reduce effort and keep systems stable over time.
Wide range of ready-made solutions
Cross-platform development offers an extensive library of pre-built components and modules that accelerate the development process.
Cross-platform development services we offer
Our cross-platform design and development services empower businesses to create innovative and high-performance applications that can reach a broad audience across multiple platforms.
Whether you need to develop a new cross-platform app or optimize an existing one, our team ensures consistent performance, user-friendly interfaces, and an efficient codebase.
Custom cross-platform app development
Development of custom-made cross-platform mobile applications aligned with your product and business model.
Cross-platform app modernization
Improvement of existing apps through performance optimization, redesign, and architecture updates.
Fast MVP development for startups
Fast delivery of a working product to validate your idea and enter the market safely.
Cross-platform development consulting
Technical and product guidance to define the right architecture and development approach.
UI/UX design for cross-platform applications
Work as a cross platform app design company to create clear, usable, and consistent interfaces.
Ongoing maintenance and support
We are available to address any issues, implement updates, and provide technical support.
Build a cross-platform app that reduces costs and scales with your business. Talk to our team and get a clear plan for your product.
We transform your app idea into a product that users can't wait to download!
As a cross platform design company, we design interfaces that work consistently across iOS, Android, and web, focusing on usability, clarity, and real user behavior. The goal is simple: help users complete actions faster and keep them engaged over time.
Seamless and intuitive user experience across different devices.
Consistent visual elements, colors, and typography across platforms reinforce your brand image.
Design systems that provide a consistent and scalable framework for your cross-platform applications.
Industries we serve
As a cross platform app development company, we work with businesses that rely on digital products to deliver services, engage users, and generate revenue across multiple platforms. Our cross platform mobile app design and development approach is adapted to the specific needs of each industry.
Solutions we provide
Mobile Android/
iOS apps
Tablet Android/
iOS apps
PWAs
TV apps for Apple
Android TV
Desktop Apps
Web Apps
Our cases
Explore our featured projects and see how we've helped businesses achieve their goals with our cross-platform development solutions.
Switzerland
Manufacturing
360° Shower is an end-to-end service
to simplify the shower installation
process
Digital ecosystem for sanitary professionals
360° Shower is an end-to-end service to simplify the shower installation process
Services provided:
Onix created multi-platform apps, utilizing a single codebase, ensuring cross-platform compatibility, with robust error-tracking & monitoring solutions
USA
Sports & Fitness
JSA is a platform that offers
personalized training and nutrition
services
Online sports & fitness platform
JSA is a platform that offers personalized training and nutrition services
Services provided:
The client came to us with an already existing project and asked to help implement specific features, improve existing ones, and fix bugs
USA
Social Media
The app lets users share pictures and
connect with photographers worldwide
Peer-to-peer learning app to empower photographers
The app lets users share pictures and connect with photographers worldwide
Services provided:
We developed a learning app with a payment gateway, live video streaming, implemented image recognition, and ensured security with AWS infrastructure
We stay up-to-date with the latest technologies and industry trends to provide you with cutting-edge solutions that stay ahead of the competition.
0%
compromising on efficiency or quality
100%
apps that look, feel, and perform like native
5/5
end-user satisfaction rating
What is your cross-platform app idea?
How we build a cross-platform development process
From conceptualization to deployment, our team will guide you through the entire development process, ensuring seamless integration, optimal performance, and a consistent user experience across iOS, Android, and web platforms.
- 01
Requirement analysis
We start by understanding your business goals, target audience, and project requirements. Our team collaborates closely with you to gather all the necessary information and define the scope of the project.
- 02
Technology selection
We rely on the availability of the necessary SDK for the platform and requirements for using native modules primarily. Based on the project requirements, we select the most suitable cross-platform framework, such as React Native or Flutter. We consider factors like performance, scalability, and the specific needs of your application.
- 03
UI/UX design
Our designers create intuitive and visually appealing user interfaces that align with your brand identity and provide an exceptional user experience. We focus on creating designs that are consistent across platforms and devices.
- 04
Development and testing
Our developers leverage the chosen cross-platform framework to write clean and reusable code. We follow industry best practices and perform rigorous testing at each stage to ensure the application functions flawlessly on various platforms.
- 05
Deployment and launch
We strive to ensure simultaneous release everywhere. Once the development and testing phases are complete, we assist with deploying your cross-platform application to the respective app stores. We ensure a smooth and successful launch, handling all the necessary configurations and preparations.
- 06
Maintenance and support
We provide ongoing maintenance and support services to keep your cross-platform application up-to-date, secure, and performing optimally. Our team is readily available to address any issues, implement updates, and provide technical assistance as needed.
Our cross-platform development process is driven by a focus on quality, efficiency, and customer satisfaction!
Our engagement models
Choose a model that best suits you
Dedicated team
Hire an allocated group of remote employees who work exclusively on your project. You can fully rely on experts to fully manage your project. We form a dedicated team of experts hand‑picked specifically for your business goals and requirements.
Staff augmentation
If you need the expertise of one or several professionals, Onix will assign an overseas team with the required set of skills. Our experts proficiently support your projects on an ongoing basis together with your already existing team.
Break free from platform limitations! We help you bridge the gap between iOS and Android, enhance performance, and create a consistent user experience on multiple platforms.
Why choose Onix for cross-platform development services
Expertise
Custom solutions
Time and cost efficiency
Transparent communication
Brands we have worked with
Technologies we work with but not limited to
Our developers use proven technologies and frameworks to build cross-platform applications that deliver stable performance, consistent user experience, and reliable operation across iOS, Android, and web.
Our Insights
Tell us about your product idea and let the magic unfold.
FAQ
What are the benefits of cross-platform app development?
Cross-platform application development services offer several advantages, including:
Cost-effectiveness. Developing a single codebase for multiple platforms reduces development and maintenance costs.
Time-saving. With cross-platform development frameworks, developers can write code once and deploy it across different platforms, saving time and effort.
Wider audience reach. By targeting multiple platforms, businesses can reach a larger user base and maximize their app's potential.
Consistent user experience. Cross-platform development ensures a consistent user interface and experience across different devices and platforms.
Can you integrate custom features and functionalities into cross-platform apps?
Yes, we can integrate custom features and functionalities into cross-platform apps based on your specific requirements. We are an experienced cross-platform app development company that has expertise in working with various APIs, third-party integrations, and backend systems to deliver tailored solutions that meet your business needs.
Will my cross-platform app have native-like performance?
Yes, cross-platform apps developed using modern frameworks like React Native and Flutter can deliver native-like performance. These frameworks leverage native components and optimize performance, resulting in smooth and responsive user experiences.
Do you provide cross-platform design services?
Sure! We offer cross-platform design services to help businesses create visually appealing and user-friendly applications that work seamlessly across different platforms and devices. As a cross-platform design company, we focus on creating visually appealing interfaces, easy navigation, and seamless interactions to enhance user engagement and satisfaction.
How do you ensure the quality of cross-platform apps?
We follow rigorous quality assurance processes and conduct thorough testing to ensure the functionality, performance, and compatibility of cross-platform apps across different devices and platforms. Onix is an experienced cross-platform app development company that performs comprehensive testing, including functional testing, usability testing, performance testing, and compatibility testing.
Can you provide ongoing support and maintenance for cross-platform apps?
Yes, our cross-platform mobile app development services include ongoing support and maintenance to ensure your app's smooth operation and address any issues or updates that may arise. We provide timely updates, bug fixes, and enhancements to keep your app up-to-date and compatible with the latest platform changes.
How long does it take to develop a cross-platform app?
The development timeline for a cross-platform app depends on various factors, including the complexity of the app, the number of features, and the integration requirements. We work closely with our clients to define project timelines and milestones, ensuring efficient development and timely delivery.
How can I get started with your cross-platform mobile app development services?
Getting started is easy! Simply contact our team and we will be happy to discuss your project requirements, provide comprehensive consultation, and guide you through the cross-platform app development process.