Cross-Platform Mobile App Development

Work with a highly experienced cross-platform development team to build and release ideas at speed, leveraging the power of iOS and Android from a single code base. Our UK-based app team works across the entire app development lifecycle, from wireframing and design, right through to building, releasing and maintaining some of the most popular apps available across Google Play and the App Store.

View Our Work for <em class="highlight">Cross-Platform</em> Mobile App Development
Team of Experts
Years of Mobile Experience
Mobile Apps

Cross-Platform App Development Company

Our Cross-Platform App Solution

Our cross-platform development team are experienced in launching successful applications at pace, managing regulatory requirements, security standards and working with multiple stakeholders to truly understand business objectives and processes.

We also work with organisations to create hybrid apps that are deeply integrated into wider web applications and software platforms. Our API-first approach allows us to develop rich software ecosystems that seamlessly work together.

We use agile-first rapid development to achieve native performance across iOS and Android, allowing whole-of-market coverage with the benefits of managing and maintaining a single code base.


Our Cross-Platform App Development Services


We design and develop cross-platform applications that delight users and smash KPIs.

We start by building a comprehensive understanding of your business, staff, and internal processes.We use this to start planning a solution that makes data-driven improvements to your business problems.



Systems Integration

We also develop mobile platforms alongside browser-based applications to ensure consistency across mobile and desktop. We have extensive experience integrating mobile applications into wider software ecosystems and back-office applications, including CRMs and ERPs. 

Our API first approach also allows us to build platforms with powerful data integrations, unlocking unlimited growth and efficiency for your organisation.



We build a comprehensive understanding of your target users' needs, motivations, and objectives. This allows us to use quantitative and qualitative data to inform our UI/UX Process. We create prototypes and mock-ups that allow us to fully test, observe and learn how users will respond to your mobile application across platforms. This validated information is then fed into the branding, usability, functionality and design of your mobile app.


Our impact doesn't end with launch. We work with clients to understand their business objectives and KPIs, which then inform our analytics strategy and data reporting plans. From day one, we collect meaningful data on your app's performance and user engagement, allowing us to clearly see what's working and what needs improvement. We directly feed this back into feature development and your product roadmap, ensuring that insight leads to action and ultimately impact.

Start-up App Development

We love working with startups and using our expertise and experience to assist in shaping and moulding the digital direction of breakthrough new businesses. 

We've worked with some of the UK's most exciting mobile-first start-ups, helping them step-by-step to transform their ideas into an MVP or fully fleshed-out product. Alongside providing product development services, we can also support you when it comes to finding and securing funding using our extensive investor network and Ventures programme.

The journey doesn’t end after launch either. Our team works with a number of businesses on an ongoing basis to define, design and build new features to drive exponential user and revenue growth.

Ready to Get Started?

Consumer App Development

Create New Revenue Streams

Mobile applications can open up multiple avenues to expand your revenue. From providing subscription services to in-app purchases, there are multiple ways you can add value to users willing to pay for it.

Reward Loyal Customers

Mobile loyalty programmes can be used by any business to build better customer relationships and grow brand loyalty. By leveraging mobile-first solutions powered by real-time data, you can provide personalised perks directly to your customer's fingertips.

Engage Your Audience

Consumers want more than good products and services, they want to be able to engage with your brand anywhere, anytime. Reach your audience with highly responsive mobile solutions that can be accessed from any device.

We Deliver Impact


From reducing technical debt to introducing robust process automation, we identify and upgrade manual or laborious tasks to slick automated processes, allowing your staff and customers to focus on what matters most


We build mobile solutions that are explicitly designed to streamline operations and deliver substantial cost savings. Our team will dive into your challenges and opportunities to identify the right problems, build the best solution then continuously monitor and upscale the impact on your KPIs.


By clearly understanding your product roadmap and commercial objectives, we always investigate, prioritise and deliver the features that are going to leave competitors racing to catch up. Our focus is on getting you exactly where you need to be in the fastest, simplest way, not maximising our build times or bloating budgets.


We identify clear opportunities for businesses to improve their bottom line through the development of new mobile-focused customer propositions. We turn mobile app product and service ideas into tangible applications that are optimised for profitability and on-going performance.

Our Industry Expertise


Fintech apps have democratised access to financial services, but building them correctly isn’t an easy task. With deep expertise in security, third-party integrations and regulatory compliance, we build FinTech apps that delight users and drive forward digital services. 


Whether you’re a healtech start-up embarking on the journey to develop your first app or an established organisation looking to deliver a better mobile experience, we understand what it takes to deliver technology that genuinely changes lives.


Looking to build the next Airbnb? Developing, deploying and growing peer-to-peer apps takes more than connecting two sides of a marketplace. With proven expertise growing the UK’s biggest parking platform, we can help you get to market and become the category leader.


From mobile eCommerce to accurately managing inventory, mobile apps can be leveraged by retailers to improve customer experience and organisational efficiency. We help retailers uncover and deliver the mobile-first strategies that will make an impact.

Our Cross Platform Technologies



Supporting material components and native widgets, Google's SDK Flutter offers near-native performance on iOS and Android from a single codebase.


React Native

We use React Native, Facebook's popular SDK to achieve near-native performance on iOS and Android without compromising time-to-market.

Dart programming language..


Underpinning our Flutter Development is Dart, a client-optimized language for fast apps on any platform.

Our App Development Process


Why Choose Netsells as your Cross Platform App Development Agency?

Contact Our Team

Committed Partners


We've never been a bare-minimum team. We work with you and your business to plan sustainable long-term cross platform solutions that deliver real, KPI-beating results.

Cross-Industry Expertise

From innovative start-ups to large, established household names, our team has worked globally across some of the most exciting and advanced industries. We’ve seen first hand what it takes to build the best mobile apps on the market and are happy to share our insider secrets to help you succeed.

Commercially-Driven Approach

Our approach to app development is focused on the minimum incremental change required to deliver the maximum impact. We spend just enough to iteratively show you that we’re moving in the right direction, giving you the confidence to keep investing.

Obsessed With Metrics

We approach projects by goals and objectives, not purely by features. We ensure your roadmap is always focused on moving the needle and pushing your business forward where it counts.

Flexible Resourcing

We typically get the best outcomes for our clients when we own the entire project end-to-end. With expertise and capacity across product, development and delivery, we can adjust our offering to fit your needs like a jigsaw.

Putting Users First

We put the end-user at the centre of everything we do. This allows us to validate hypotheses quickly and early in our process and obtain valuable information that influences the product direction for the better, ultimately minimising business risk.

Web & App Developers Based In York


Head Office Suite 2, Mill House, North Street, York, YO1 6JD

Tel: 01904 266603



Our Latest Cross Platform Projects

Find out how we have helped international brands speed up their app development and get to market faster with Flutter and React Native.

All Studies

Ready to build a powerful cross-platform application?