iPhone iOS App Development Company

Netsells is an award-winning Apple iPhone design and iOS app development agency. We deliver stunning in-app experiences that run seamlessly across Apple’s next-generation hardware.

View Our Work for <em class="highlight">iPhone</em> iOS App Development Company
Team of Experts
Years of Mobile Experience
Mobile Apps

Clients we work with

Cutting-Edge iOS Applications

Since the launch of the first Apple iPhone, our team has deeloped high-performance iOS applications, leveraging the latest iOS features across the entire Apple ecosystem, including machine learning, AI and VR/AR. 

Handling complex data integrations and multiple user types, our team have worked on some of the most downloaded iPhone apps across finance, insurance, travel and healthcare.

Our iOS App Development Services

Bespoke Apple iOS Development

Our robust iOS app development process helps businesses leverage the power and security of Apple's operating system without compromising native performance, UX or quality. Within our iOS Development team we have extensive experience building commercial applications in iOS, having worked with clients such as the NHS, Trainline and YourParkingSpace.

iOS Consultancy

As a well established iOS Development agency we are focused on delivering long-term support to urgent project recovery, we can offer iOS consultancy services to complement your existing team and platform. Alongside developing and maintaining iOS applications, our iOS app developers are able to provide iOS audits on platforms of any scale to help you to understand any improvements or further development required.

iOS Project Rescue

Many of our clients come to us with existing iOS apps that require urgent support. If your iPhone app has run into difficulties or you’ve fallen out with your existing iOS app developer, we can quickly get you back on track with full code audits and a comprehensive recovery plan.

Enterprise Apple iOS Development

Our iOS app development team can support you at every stage of the development process, from mapping out technical architecture and integrations to developing user research and feature mapping. We can also help you maintain and further improve an existing iOS application, tracking new feature updates against core business KPIs.

Ready to build a high-performance iOS Application?

The Complete iOS App Development Package

Stunning UI/UX Design

Our iOS development team make the most of Xcode, Apple’s integrated development environment that allows them to test and refine all aspects of design, including display sizes and device orientation. We work across the full suite of Apple devices, including iPad, Apple Watch and Apple TV.

Lightning-fast Performance

Native apps for iOS are able to fully utilize the power of the device’s CPU, which makes them exceptionally fast and performant. By tapping into the full range of iOS features our iOS developers create engaging iPhone apps that can leverage innovative technologies like AR, Apple Pay and Voice Control.

Optimise and Grow

Alongside designing, building and maintaining iOS apps, our iPhone app development team can also help with App Store Optimisation and driving growth. We work with many of our clients on an on-going Agile basis, to continually improve their apps, develop their product backlog and release new features.

Our Apple iOS Development Process

Foundation Sprint

Our comprehensive Discovery process turns business objectives, user profiles, and commercial models into functional specifications and prototypes. We use this information to define success metrics and target users, alongside guiding both technical and product decisions. This ensures your iOS app is built on solid foundations.

Solution Sprint

The Solution Sprint is where we work out the details of the product: What does it look like, how does it make your users’ lives easier, and who are the stakeholders that should be involved in working on this solution. Once we have mapped out your users, their problems and the high-level concept for your product, we will use this sprint to build process maps, clickable wireframes and refine your product backlog.

Delivery Sprint

Building products users love is an iterative process. Delivery is where we move onto the ongoing delivery of the product, working in 2-week sprints to deliver against the agreed initial priority items within the backlog. Following dual-track Agile principles, the product team will continue to refine the product and backlog as the delivery of the solution begins. This allows us to consistently incorporate user and stakeholder feedback to continuously evolve your product for the better.

Deployment Sprint

Stable. Seamless. Secure. These three things are essential when it comes to deploying software and applications. The Deployment Sprint is where we coordinate a release across several teams and systems and ensure that it is successful. The goal of the deployment sprint is to ensure that we can run the correct processes across development, staging and production environments with an agreed handover process. This ensures that we’re deploying secure code and have a tightly controlled rollout.

Why Choose Netsells as your iOS App development agency?

We work with organisations across the globe to develop mobile apps that streamline costs, increase profitability and improve efficiency.

Contact Our Team

We're Committed Partners

Our iOS Development Team is never satisfied with delivering the bare minimum against a brief. That just doesn’t cut it for us. We take the time to work with you to plan and develop sustainable, long-term solutions that deliver real, measurable 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.

Built to Scale With You

Building a development team is hard. We’ve experienced it first hand and have used our expertise to build and grow one of the best development teams in the UK. Whatever your requirements, our team can deliver projects at any scale and with a varied mixture of popular cross-platform development stacks.

Obsessed With Metrics

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

Flexible Resourcing

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

Putting Users First

We minimise business risk by putting 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.

Custom iOS Applications for Multiple Device Types

iPhone App Development

Meeting the growing demand for iPhone application development, we provide a suite of iOS development services to assist with the development of powerful and secure iPhone applications.

Apple Watch App Development

Looking to make your app compatible with your user's Apple Watch devices? We develop watchOS apps that can run across iPhones and Apple Watches to provide a multi-device experience.

MacOS App Development

Looking to develop an elegant macOS application to compliment your mobile app? Or perhaps you're looking for a standalone native application? We can assist with the development of MacOS applications that run across the entire suite of Apple products.

Apple TV App Development

tvOS apps deliver immersive experiences right to a user's living room. With the help of our mobile development team, you'll have your own TV-based app ready to go in no time.

Trusted and Proven

We've honed our processes to make sure we integrate seamlessly into your business with a focus on minimising risk and enabling effective collaboration. Find out what our long term partners have to say about working with us.

Our Technologies



Since its release in 2014 we have been using Swift, Apple's intuitive programming language for building apps for iOS, Mac, Apple TV and Apple Watch.

irebase app development..


We utilise Google's Firebase platform to provide powerful back-end and data services for our mobile applications.


Google Cloud

We leverage Google’s latest innovations, from machine learning and cloud security to artificial intelligence and natural language processing.

Our industry expertise

Financial Services

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 financial 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.

See Our iOS Development Work

From partnering with new FinTech startups, to supporting mobile apps that handle millions of daily transactions, find out more about how we've designed, developed and delivered some of the best iPhone apps on the market.

View All Projects

Ready to build a high-performance iOS Application?