CONTACT
  • SERVICES
  • INDUSTRIES
  • WORK
  • COMPANY
  • BLOG
  • CONTACT
  • SERVICES
  • INDUSTRIES
  • WORK
  • COMPANY
  • BLOG
  • CONTACT
  • Services Overview
    Web Development
    Android Development
    iOS Development
    AI Development
  • VR/AR Development
    3D Art Unity
    UI/UX Design
    ﹂UX Audit
    ﹂Branding Design
    ﹂Motion Design
    ﹂Crossplatform Design and Development
    ﹂Webflow Design
    ﹂Digital Product Design
    DevOps Services
    QA Services
  • Dedicated Team
    Dedicated Team Calculator
    Salesforce Development
    Discovery Phase
  • Industries Overview
    Healthcare Software Development
    Travel Software Development
  • Online Scheduling and Booking
    eLearning
    LMS
  • Fitness App Development
    Fintech
  • Case Studies
  • Design Portfolio
  • Testimonials
  • Onix Story
    Referral Program
  • Careers
  • About Ukraine
  • Healthcare
    AI
  • Travel
    eCommerce
  • Sports & Fitness
    VR/AR
  1. Onix
  2. Services
  3. UI/UX design
  4. Crossplatform
MainBackground

Cross-Platform Design & Development Services

Onix is your trusted cross-platform mobile app development company that professionally combines cutting-edge technologies with industry best practices to build high-performance, feature-rich apps that work seamlessly across multiple platforms.

Whether you need to build a brand-new app from scratch or enhance an existing one, we have the technical proficiency and creativity to bring your vision to life.

background
phone
phone

Let's create an app that shines on every platform!

Mobile Android/
iOS apps

Tablet Android/
iOS apps

TV apps for Apple TV/
Android TV

Desktop &
Web Apps

Don't limit your app's potential! Unleash the power of cross-platform development and deliver a seamless user experience across multiple operating systems.

0+

Years of experience in
software development

0+

Successfully delivered
projects

0+

Countries represented
by clients

0+

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

Onix

With our cross-platform development services, you'll get

01

Cost-effective solutions

We build custom cross-platform mobile apps that work seamlessly across multiple platforms, saving you time and development costs.

02

Reach a wider audience

By developing cross-platform apps, your application will be compatible with both iOS and Android devices, maximizing your market potential.

03

Consistent user experience

We ensure a consistent experience across different platforms, maintaining brand identity and providing a cohesive user interface.

04

Faster time to market

Utilizing reusable code components allows for faster deployment and quickly getting your app to the market.

05

Easy maintenance and updates

With a unified codebase, we easily roll out new features and enhancements across all platforms simultaneously.

06

Wide range of ready-made solutions

Cross-platform development offers an extensive library of pre-built components and modules that accelerate the development process, saving you time and resources.

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

We specialize in developing high-quality cross-platform apps using frameworks like React Native or Flutter.

Our experienced developers ensure your app runs seamlessly across multiple platforms, providing a consistent user experience.

01

Cross-platform app modernization

Onix is a cross-platform design and development company that revitalizes your existing application and keeps it up-to-date with the latest technologies and user expectations.

Our services include code refactoring, UI/UX enhancement, performance optimization, feature upgrades, backend integration, and more.

02

Fast MVP development for startups

We understand the importance of speed and agility for startups, and our experienced team helps you quickly validate your business idea and get your cross-platform app to market in the shortest possible time.

03

Cross-platform development consulting

Whether you're starting from scratch or looking to optimize your existing cross-platform solution, our consulting services will provide you with valuable insights, best practices, and recommendations to ensure a smooth and successful cross-platform development journey.

04

UI/UX design for cross-platform applications

As a cross-platform app design company, we work closely with you to create designs that captivate users, enhance their experience, and drive engagement.

Our UI/UX design solutions align with your brand identity and provide a seamless user experience across different platforms.

05

Ongoing maintenance and support

We provide ongoing maintenance and support services to keep your app running smoothly.

Our team is available to address any issues, implement updates, and provide technical support, ensuring that your app remains up-to-date and functional.

06
call_to_action_bg

Ready to conquer multiple platforms with your app? Reach more users, maximize efficiency, and unlock endless possibilities for your app!

We transform your app idea into a captivating and innovative product that users can't wait to download!

Onix is a cross-platform design company that specializes in creating user-centric designs that are optimized for various platforms, including iOS, Android, and web. We focus on creating visually appealing interfaces, easy navigation, and seamless interactions to enhance user engagement and satisfaction.

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, enabling easier maintenance and future updates.

background image

[ Industries we serve ]

We’re a highly competent cross platform mobile app development company that delivers next-gen solutions for various industry domains:

Solutions we provide

Mobile Android/
iOS apps

Tablet Android/
iOS apps

PWAs

TV apps for Apple TV/
Android TV

Desktop Apps

Web Apps

background

See other related projects

Explore our featured projects and see how we've helped businesses achieve their goals with our cross-platform development solutions.

Onix
Onix

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

Onix
Onix

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

Onix
Onix

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

background

Explore our works

Click here to immerse yourself in a world of exceptional web design. Our portfolio awaits, showcasing our finest works.

View case studies
image
image
image
image
image
image
image
image
background

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.

    figures
  • 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.

    figures
  • 03

    UI/UX design

    Our talented 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.

    figures
  • 04

    Development and testing

    Our experienced 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.

    figures
  • 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.

    figures
  • 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.

    figures
figures
figures
figures
figures
figures
figures

Our cross-platform development process is driven by a focus on quality, efficiency, and customer satisfaction!

models-section-background

Onix Engagement Models

Choose a model that best suits you

Dedicated team

Dedicated software development teams refer to hiring a fully dedicated set of developers assigned exclusively to your business initiatives for the long term. Dedicated teams ensure faster turnaround times and better communication between you and the development team.

Staff augmentation

With this option, clients can hire additional expert personnel for short-term projects or during peak periods of activity to supplement their internal teams. Dedicated Onix specialists will join existing teams to ensure deadlines and requirements are met while also providing expertise in specific areas.

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

01

Expertise

We have deep knowledge and experience delivering numerous projects across different industries, showcasing our expertise in creating robust and scalable cross-platform applications.

image
02

Custom solutions

We understand that every business has unique goals. That's why we offer tailored cross-platform development services to meet your specific needs. Our solutions are designed to align with your business goals and deliver the desired outcomes.

image
03

Time and cost efficiency

With a single codebase that can be shared across multiple platforms, we can streamline the development process and ensure faster time-to-market for your application.

image
04

Transparent communication

Our team keeps you informed about the progress of your project, actively seeks your feedback, and addresses any concerns or questions you may have.

image

Brands we have worked with

Technologies we work with but not limited to

Our skilled developers harness the power of innovative technologies and frameworks to create seamless, high-performance applications that work flawlessly across multiple platforms.

Our Insights

Essential Reasons to Choose Flutter for Mobile App Development

Essential Reasons to Choose Flutter for Mobile App Development

Mobile App Development Cost Breakdown [2025 Update]

Mobile App Development Cost Breakdown [2025 Update]

Cost of Mobile App Design: Plan Your Budget

Cost of Mobile App Design: Plan Your Budget

call_to_action_bg

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.