App development agency London

We are an experienced mobile app development agency based in London, UK. We have over ten years of experience helping SMEs and enterprise organisations launch apps that deliver real value.

We build, launch and manage mobile apps for


Our App Development Services

Mobile app Discovery service (free)

We don’t build apps for an app’s sake. Our free discovery process helps you assess your requirements, review available options and makes sure you build a mobile app that delivers real value to you and your customers.

Application roadmap development

From proof of concept to MVP to a long-term feature development roadmap. We will help you prioritise your app backlog and ensure you get the best value app for your requirements.

App design

Our visual, UX and UI designers will create interactive prototypes of your app to ensure a best-in-class user experience that delights users.

App development

We have a team of some of the best app developers based in London and further afield. Whether you want to build fully native or go cross-platform, we have the developers to bring your app development project to life.

User testing of apps

We usually recommend building the smallest possible version of your app and iterating based on user feedback. We will help ensure you have the data you need to make informed development decisions.

App support & app store monitoring

Once we build your mobile app, we don’t simply walk away. Instead, we have a suite of app support services, from technical support to app store monitoring, that ensure your app delivers value for years to come.

Our work

Our app development company works for both enterpise clients, medium sized businesses and SME's. Find some examples of our app development work below.

The client: Camile

A restaurant ordering app for Thai restaurant chain, Camile.

Our role

The work

Having outgrown a 3rd party solution, Camile decided to develop a real competitive advantage by building their own mobile app and restaurant ordering platform.

The app and ordering system underpin Camile’s direct to customer experience, representing an improved customer experience, increased revenue potential and enhanced analytics.

We continue to work alongside Camile to ensure that their app offers a best-in-class experience for their customers and provides excellent ROI for the company.

The client: Paddy Power

A retail companion app for all 600+ Paddy Power retail stores.

Our role

The work

In recent years, the betting industry has revolutionised the way it does business by developing a powerful digital presence that's attracted a new generation of customers. However, the industry's retail sector remains a valuable source of revenue and constitutes a significant portion of its customer base.

At Paddy Power, a significant proportion of its customers still place bets in brick-and-mortar shops. Paddy Power needed a complimentary digital experience to enhance the relationship with these retail customers.

Because Paddy Power needed to move quickly, the MVP took the form of a mobile website with UI and UX that felt like a mobile app rather than building native mobile apps from the start. This saved months of execution and proved the value proposition just the same.

Once the value proposition was proven with positive user feedback, the system developed into native mobile apps and new features were rolled out to enhance the customer experience and deliver greater ROI for Paddy Power.

"The team at Steer 73 are extremely well versed in their fields and regularly provide informative updates on Technology and external industry trends, which we can translate to benefit our customers and anticipate challenges.

The attention to detail, clarity, quality and pace which Steer73 deliver customer features is outstanding which creates a working relationship more akin to a joint venture than a supplier / customer standard.”

- Paddy Power


An expert App development agency in London

Why work with us?

As an app development agency in London, we have worked with enterprise clients, medium sized companies and small businesses to build mobile apps that deliver real value to the organisation , their employees and their customers.

We are developers that can guide you all the way from an initial idea, to an MVP, to and established mobile app. All the while, ensuring that your project is delivered on time and on budget.

We have never failed to deliver a project and typically from long term relationships with our clients as we continue to help them get a greater ROI from the apps that we build.

Meet us in London or
give us a call

London Office:
Steer73 - app development agency in London
85 Great Portland Street, London W1W 7LT, United Kingdom

Get in touch
Phone number: +44 2038 550 237

About us

Opened Monday to Friday, 09:00 - 18:00
Founded: 2014
Mission: to improve the performance of businesses and lives of their people and customers, with technology.
Social Media:

More services

Custom software development
Data warehousing & analytics
Web apps
Customer portals

We’ve never failed to deliver a project

At Steer73, we pride ourselves on our flawless track record of developing successful, world-class mobile apps for our clients.

We have consistently exceeded expectations across various industries and project scopes by leveraging proven methodologies, cutting-edge technologies, and our expertise, to build apps that don't just meet the requirements but drive tangible business value.

Proven Processes

Over the last 10 years, we have tested and refined various processes for building, launching, and managing mobile apps for enterprises and SMEs. Our ability to balance changing industry trends with time-tested methodologies enables us to maximise the probability of delivering outstanding results consistently.

Maximizing ROI

App development is an investment, and maximising your return on that investment is crucial. We consider your business needs as well as your users' behaviours, preferences, and expectations when developing your app. This dual focus allows us to develop apps that not only provide an exceptional user experience but also align with your strategic objectives.

UK-Based, Global Team

While headquartered in the UK, our team comprises a diverse set of global talent from 7 other countries, bringing a wealth of experience, exposure to various technology stacks, and fresh perspectives that foster innovation. We provide you with the benefits of working with a local company backed by an internationally renowned workforce.

How we approach mobile application development

User-centric App Design & Development

We invest heavily in user research and journey mapping to deeply understand your audience's needs, behaviours, and pain points. We then align our insights with the project scope to create delightful user experiences.

We also make use of the most suitable methodology during the development phase to ensure the timely delivery of a high-quality app while keeping you involved at every step with full visibility.

Ongoing Maintenance & Support

We provide continuous updates, new feature development, and long-term support to keep your app competitive, relevant, and aligned with the latest OS and design standards.

We also proactively identify areas for improvement including performance optimisations, security patching, and third-party integrations, allowing you to focus on core operations while we handle all technical aspects seamlessly.

Our mobile app development articles

How to Reduce the Cost of Building a Mobile App (Without Compromising on Quality)

Where do great digital products come from?

Optimising projects for speed (a mobile app case study)


As your trusted app development agency, we will meet with you to identify your business requirements, translate these into technical requirements and give you a high level overview of the technology options available to you, their costs and an indicative roadmap to take you from where you are now, to a fully functional mobile app.


Building on the understanding of your requirements developed in Discovery, we would go through the necessary processes to move from a high-level understanding to working out exactly what you need to do, what the limiting parameters are and what questions we need to answer.

Design & Prototyping

Before beginning with app development, our talented designers will collaborate closely with you to turn your vision for the mobile app into a compelling user experience. Through iterative prototyping and user testing, we refine the designs, ensuring they resonate with your target audience and meet usability standards.

Development & Launch

With the approved designs, capabilities and requirements in hand, our mobile app developers will begin to code the app. Leveraging our experience as an app development agency, we will make use of either the agile methodology or the waterfall approach to ensure an efficient and high-quality app delivery. Through continuous collaboration and regular updates from our project managers, we foster a transparent partnership, keeping you informed and involved throughout the development lifecycle.

Monitoring & Support

Even after a successful launch, we recognize that your app's journey is far from over. That's why we offer comprehensive app monitoring and support services to ensure your app's long-term performance, relevance, and competitiveness. With our ongoing support, you can rest assured that your app will continue to deliver an exceptional user experience while staying ahead of the curve.

Cost of mobile app development

At Steer73 we work with clients across different budget ranges to deliver mobile apps that meet their business goals. Our role is to provide you with the best mobile app solution at the most cost-effective rates, so you can get the most value for your investment.

The cost of your mobile app could vary depending on several factors including:

Black mobile mockup of the mobile platform UI design on an iPhone

Project scale and complexity

Our London agency has experience working on projects of varying scales and complexities, ranging from small businesses to large enterprises with global reach. We understand the unique challenges and requirements that come with each project, and we tailor our approach to meet the specific needs of our clients.

Our proven process ensures that we can successfully deliver mobile app projects on time and on budget. We work closely with our clients to understand their goals, challenges, and target audience, allowing us to create mobile apps that are not only functional and user-friendly but also align with overall business strategy.

Why should you choose a mobile app development agency like us?

At Steer73, we go beyond just building apps – we work closely with our clients to understand their unique challenges and goals to provide transformative solutions that ensure their project is a success. Our team of expert app developers, based in London and the UK, is dedicated to creating innovative and user-friendly mobile applications that stand out in a crowded marketplace.

From initial planning and design to development, launch, and ongoing support, we are committed to delivering high-quality solutions that meet our clients' needs and drive continued success long after the app is launched.


How we manage mobile app development projects

Our project management tools and techniques enable us to track progress, communicate regular status updates, and ensure the timely delivery of high-quality mobile apps. We focus on having an open and transparent delivery process that ensures knowledge is both securely managed and is fully transferable to our clients.

With a proven toolkit in hand, let us take the lead in transforming your business problem into an innovative mobile solution.

The perfect team

Mobile app development requires a ‘full stack’ product team. From product directors to specialist developers, to UX designers, to QA testers, our London agency has a comprehensive team that are experts in their field and cover every expertise you need to bring your vision to life.

Steer73’s mobile app development methodology

There are four phases we use to define and deliver your mobile app solution. We start with a scoping project where we fully define all the requirements of a project. This phase also involves early-stage investigation and design prototyping to mitigate risks. We then work through defining a solution, building that solution, and testing what has been built. These steps are crucial in making sure your project is well-defined, low-risk, and executed with precision.

Frequently Asked Question

How do you ensure the confidentiality?

Mobile app development requires a ‘full stack’ product team. From product directors to specialist developers, to UX designers, to QA testers, our London agency has a comprehensive team that are experts in their field and cover every expertise you need to bring your vision to life.

How long does it take to build an app?

The timeline for building a mobile or web app depends on the scope and complexity of your project. If you're looking for a Minimum Viable Product with core features to get to market quickly, our team can potentially deliver in just a couple of months for simpler apps. But if you need a more robust, feature-packed app, you're probably looking at several months of development time.

How much does it cost to build an app?

The cost of building a mobile app depends entirely on its proposed features and development requirements. An accurate estimate requires a thorough consultation with app development experts like us to understand your goals, after which a detailed proposal outlining the scope of work and associated costs will be provided.

Do you offer flexible payment models?

Sure, we do. We breakdown payments into key milestones to breakdown the cost of your app development and constrain risk. For more information send us an email at [](

Do you offer post-launch support services?

Absolutely. As your app development agency, our commitment to your project extends beyond its launch date. Aside from partnering with you on new feature rollouts and updates, we also provide app monitoring and maintenance services to ensure your mobile app outperforms your competitors.

What does the app development process look like?

The App development process typically starts with a consultation to discuss your goals for the mobile app. Once this has been finalised, a design and prototype will be created showing the structure of your mobile application. Finally, our app developers will code your app and the result is a native or hybrid app that works perfectly on all platforms.

How do you ensure data privacy and security compliance?

We conduct thorough data protection impact assessments during planning to identify risks and implement robust data encryption protocols. We also ensure secure data transfer, maintain detailed processing records for transparency and ensure comprehensive team training on data handling best practices.

What sets you apart from other app development agencies?

We’re a London-based app development agency with a track record of successful projects. With 10 years of experience building and maintaining apps for SMEs and large enterprises, we can channel our expertise to projects of any size, ensuring we deliver maximum value for your money. Feel free to look at our previous projects [here](

How often do I need to update my mobile app?

The frequency of mobile app updates depends on factors like your product roadmap, user feedback, industry trends, and platform requirements. We recommend releasing new updates periodically to address bugs, introduce new features, enhance security, and improve overall app performance. This will keep your mobile app competitive and relevant to your users.

What is the difference between native and hybrid app development?

Native apps are built specifically for either Android or IOS using their respective programming languages. This makes them fast, secure, and able to leverage all the device's capabilities, however, separate codebases are needed for each platform, increasing cost. Hybrid apps, on the other hand, are built using cross-platform technologies like React Native, .NET MAUI or Flutter, and a single codebase is used for multiple operating systems. While they may not be as fast as native apps, hybrid apps are more cost-effective for targeting multiple platforms simultaneously. We wrote an article on this [here](

It’s never a bad time to talk with us!

No matter what stage your project is in, we would love to speak.

We offer a free discovery service to help you develop a deeper understanding of your problem, the potential solutions and the costs involved in building a solution.

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