Mobile App Development Company UK
Custom iOS, Android and Business App Development
We design and build revenue-generating apps for businesses across the UK
Mobile App Design for Growing Businesses
We're a mobile app development company, building custom apps for businesses across Wiltshire, Gloucestershire and the UK, from independent retailers wanting a simpler way to take orders, to hospitality and tourism businesses handling bookings, to professional services firms giving clients a direct line to their team.
A mobile app puts your business in your customers' pockets, not buried in a browser tab. For a shop or café, that means faster ordering and more repeat visits. For a service business, it means fewer missed appointments and a more professional first impression than an email chain. Done well, it's one of the simplest ways to turn one-off customers into regulars.
If you're weighing up whether custom app development is worth it for your business, the honest answer is: it depends on what you're trying to fix. Below, our mobile app developers break down what we build, how the process works, and what app development typically costs, so you can judge whether it's the right next step before you get in touch.
Digital Optimus designs and develops mobile applications for businesses that want to improve customer engagement, simplify everyday processes or create new digital services. We build apps for iOS and Android, as well as web-based and cross-platform applications when they're a better fit for the project.
Our mobile app development services include customer-facing apps for booking, loyalty, ordering and memberships, as well as internal business apps for job management, scheduling, stock control, forms and communication.
Every project starts with the business problem, not the technology. We define what the app needs to achieve, map the user journey, and then build the simplest solution that delivers that outcome.
You are a custom build Mobile App Development Company - So what do you do?
Custom app development
Our solutions are crafted to meet your business's unique needs, focusing on your specific requirements instead of a one-size-fits-all template. By prioritising your goals and challenges, we tailor our offerings to enhance operations and drive growth, ensuring you receive effective strategies aligned with your vision.
App redesign and rebuild
Modernising an outdated app requires a comprehensive approach to enhance functionality and user experience. This involves updating the interface, optimising features, and integrating new technologies. User feedback is essential for pinpointing improvement areas, allowing developers to resolve disengagement issues. Revitalising the app helps businesses attract and retain users, boosting engagement and profitability.
Maintenance and support
Ongoing updates after launch are vital for a product's success. They fix bugs and introduce new features based on user feedback. Continuously improving the product keeps the audience engaged and satisfied in a changing market. Regular updates show commitment to quality and customer satisfaction, fostering user trust and loyalty.
Native Apps, Cross-Platform Apps and Web Apps
Native mobile apps
Built specifically for iOS or Android and distributed through the relevant app stores.
Cross-platform mobile apps
Built using a shared development framework so the same application can operate across both iOS and Android.
Web apps and Progressive Web Apps (PWA's)
Browser-based applications that work across phones, tablets and desktops without necessarily requiring an app-store download.
At Digital Optimus, we will recommend the most appropriate approach based on functionality, budget, performance requirements and how your customers will use the app.
Types of Mobile Apps Design We Can Develop
Booking and Appointment Apps
Allow customers to view availability, book services, receive reminders and manage appointments from their phone.
Membership Apps
Give members secure access to content, events, resources, subscriptions and community features.
Loyalty and Rewards Apps
Encourage repeat business through digital loyalty cards, rewards, personalised offers and push notifications.
Ordering and ecommerce Apps
Allow customers to browse products, place orders, pay and reorder quickly.
Internal Business Apps
Replace paperwork and spreadsheets with mobile tools for job sheets, scheduling, stock, inspections and staff workflows.
Community and Content Apps
Create private spaces for members to share content, access videos, attend events and receive updates.
Our Mobile App Design Process
Discovery
We start with the business objective, target users and the problem the app needs to solve.
Scope and Specification
We define the features, user journeys, integrations and technical requirements.
Scope and UX and App Design
We design the navigation, screens and interactions before development begins.
Development
The application is built and tested across the relevant devices and platforms.
Testing
We test functionality, usability, performance and integrations before launch.
App Store Publishing
We will manage submission to the Apple App Store and Google Play.
Support and Improvement
After launch, we remain available for maintenance, updates and new functionality.
Why Choose Digital Optimus for Mobile App Design?
Fixed and transparent pricing
We agree the scope and cost before development begins, so there are no unexpected invoices halfway through the project.
UK-based development and support
Digital Optimus is based in Swindon and works with businesses throughout Wiltshire, Gloucestershire and across the UK
Direct access to the person managing your build
You won't be passed through multiple account managers. You deal directly with the person managing your build.
Support after launch
Launching the app is not the end of the project. We can continue supporting, improving and expanding it as your business evolves.
Website and app expertise together
When an app needs to connect with your website, e-commerce system, or digital customer journey, we can design them as a single ecosystem, as we have expertise in both web design and mobile app design and development
The Case for a Mobile App Design
Mobile apps have moved beyond optional tools; they now capture customer attention. The average person spends about 4 hours and 37 minutes a day on their smartphone, and mobile apps account for a significant share of that time. In 2025, users across iOS and Android spent a cumulative 5.3 trillion hours engaging with apps.
What has shifted recently is how this value is harnessed. In-app purchase revenue surged 10.6% year over year in 2025, while new downloads rose just 0.8%, suggesting revenue is growing more than ten times faster than new installations. This shows that businesses thriving in the mobile space aren’t just focused on acquiring downloads; they prioritise building apps users keep coming back to, whether through loyalty programmes, booking systems, or simplified reordering.
This retention gap is significant and should be addressed from the outset: studies show that only about 25% of users revisit an app the day after its installation, and this figure plummets to roughly 7% by the 30th day. Mobile app development projects not centred on delivering genuine repeat value and driven solely by initial launch excitement tend to struggle with user retention. That's why our approach starts with strategies that build customer loyalty, rather than focusing only on securing app store approval.
Food Ordering
Digital Loyalty
Mobile Shopping
Push Notifications
Engaging Multimedia
FAQs that businesses ask Mobile App Developers
How much does an app cost in the UK?
Our Apps start from £1,995, but we recommend speaking with us so that we can better understand your project, what you want your app to do and then give you an accurate price.
We also offer payment terms.
How long does it take to build an app?
The app typically takes 3-4 weeks to build from start to finish, but each project is unique, and we'll clarify the timeline during our discussion about your project. We never deliver a late project!
Do you build for iOS and Android?
Yes, we build both and can also build web apps.
Do you offer support after launch?
Yes, we partner with you to ensure your app delivers exactly what you want. We are always on hand - just a call away.
Where are you based
We are based in Swindon, and cater for companies across Wiltshire, Gloucestershire and the wider UK
Can you design and develop complex Apps
Yes, we can build mobile apps for ambitious SME's who want to communicate better with their existing customers, and we can also create more complex apps for larger organisations. With access to almost 200 developers, we have a team that can deliver any required project. - Just Ask
Let's talk about your mobile app development project
Tell us what your business needs to achieve, and we'll come back with a clear plan, a fixed price and a realistic timeline. No pressure, no jargon, no obligation.
We usually reply within one working day · Based in Swindon, working across Wiltshire and beyond
