Mobile app development company for UK startups and growing businesses
We build iOS, Android, and cross-platform mobile apps with UX at the centre. From MVP mobile apps in 6-8 weeks to full-scale applications for startups and SMEs across the UK and Europe.
We build iOS, Android, and cross-platform mobile apps with UX at the centre. From MVP mobile apps in 6-8 weeks to full-scale applications for startups and SMEs across the UK and Europe.
We'll scope your app, advise on the right tech stack, and give you a cost estimate before you commit to anything.
Our target market
Who we build mobile apps for
Validate your startup idea
Build a focused MVP mobile app and get fast feedback from your ideal customers before committing to a full build
Digitalize your process
Start your digital transformation with a UX-first mobile app your team and stakeholders will actually love to use
Extend your product cross-platform.
Take your web product to mobile or bring your existing app to a new OS. One codebase, both platforms.
Experience across:
Case studies
Mobile apps we've built
Testimonials
Hear what clients say about us
Our mobile app clients trust us for results, reliable communication, and on-time delivery. Here's what they say.
Our services
Custom mobile app development services we offer
We build across all major platforms and use cases - from MVP validation to full-scale app development.
iOS and Android app development
Native apps for iOS and Android, built UX-first after a discovery process that clarifies user needs and business goals.
Cross-platform development (Flutter and React Native)
One codebase, iOS and Android. Faster to build, easier to maintain without sacrificing quality or user experience.
App redesigns and UX improvements
Already have an app with low adoption or high drop-off? We audit, redesign and optimise for better retention.
MVP mobile apps
A focused mobile MVP in 6–8 weeks to validate your idea, gather user feedback and attract investor interest.
App scaling and optimisation
Performance tuning, feature expansion and technical improvements for apps ready to grow beyond their initial launch.
Our UX-first approach
UX-first mobile application design and development
UX is not about having
an app look good.
Our UX-centered app development approach results in less work down the road, as the app is made backed with research and with end-users in mind.
User-friendliness in an app is the most important factor for adoption. An app made with UX at the forefront in every stage of development will give you a quick market penetration and a fast-growing user base.
Our design decisions are validated early in the process (and are shared with you). This ensures we're on the same page and on the right track to make a great app.
Our process
Our mobile app development process
Week 1
Discovery & understanding users
Let's start with what the data says
Once we're do a discovery call, pencilling the project you need, we start with interviews with actual users in your target group and team members.
We also conduct audits and reviews of analytics if you have an existing app or a platform.
Week 2 - 4
UX design & flows
We build with your UX goals in mind
We organise the content and the mapping of tasks. This is done based on the information we found during the research phase.
Week 5 - 7
Development
Design and dev come together
We hand-code the backend of the app with the UX team's inputs from previous stages. Our mobile app developers closely collaborate with the UX team at all times.
Week 8
Testing & launch
Ready to launch!!!
We test the prototype with handpicked target users and track how the app performs before launch.
Iteration & improvement
Continuous refinement and better versions
We keep supporting you with optimisations and reiterations once the mobile app is released.
Tech
Technologies we use to build your mobile app
We choose our tech stack based on what works best for your mobile app, rather than what's trendy and hot.
Python
GraphQL
REST
Future-ready tech
Advanced capabilities we build into your app
Machine Learning
AI apps made by us will learn from user behaviour, providing improved user experiences and better personalisation each passing day.
Cloud
Work with Exline Labs to develop cloud-native mobile apps to scale fast and securely. Our mobile app development company can partner with you take your startup to the next stage.
Data Analytics
Our UK mobile app development team builds apps that use the game-changing power of data analytics.
Artificial Intelligence
Our AI-integrated mobile apps, whether it is chatbots, image recognition, or voice assistance, deliver the latest in artificial intelligence for mobile devices.
FAQs
Mobile app development frequently asked questions
How much does mobile app development cost in the UK?
Mobile app development in the UK typically ranges from £2,000 for a simple MVP to £50,000 or more for a full-featured custom app. The main cost drivers are the number of features, whether you need iOS, Android, or both, the complexity of your backend, and whether you choose cross-platform (Flutter or React Native) or native development. Cross-platform is generally more cost-effective for startups needing to reach both platforms quickly. For a full breakdown of what affects mobile app costs, read our UK mobile app development cost guide.
How long will it take to develop a mobile app?
Not very long. Our process can take you from discovery call to deployable app in around 12 weeks.
Do you build cross-platform apps with Flutter or React Native?
Yes. We build cross-platform mobile apps using both Flutter and React Native depending on what suits your project best. Flutter is ideal for apps that need a highly custom UI and fast launch timelines. React Native works well when you need a large plugin ecosystem and fast iteration. Both deliver a single codebase that runs on iOS and Android, keeping your build cost and timeline down. Not sure which is right for your app? See our 2026 comparison of Flutter, React Native, and other frameworks.
Do you develop mobile apps for both Android and iOS?
Yes - we develop native apps for iOS and Android as well as cross-platform apps using Flutter and React Native. We choose the best stack based on your project needs and budget.
Can you integrate AI into mobile apps?
Absolutely. Our team builds AI-integrated mobile apps with features like predictive search, smart analytics, recommendation engines, and chatbot support.
Do you help with app store compliance and launch?
Yes, we assist with App Store and Google Play submissions, compliance requirements, security standards, and post-launch support.
What industries do you serve?
We've worked with sports, healthcare, SaaS, logistics, and educational businesses across the UK, EU, and New Zealand - building mobile solutions that solve real-world problems.
What makes Exline Labs different?
We're not just developers - we're a full-service mobile application development agency. Our team combines UX/UI design, app strategy, and technical execution to deliver performance, usability, and scale.
Do you work UK hours?
Yes. Most of our mobile app developers are based in Sri Lanka, but we have experience working UK hours with multiple clients.
How long does it take to build a mobile app?
For a focused MVP mobile app, our process runs from 6 to 8 weeks. Week 1 for discovery and user research, Weeks 2 to 4 for UX design and flows, Weeks 5 to 7 for development, and Week 8 for testing and launch. More complex apps with advanced features, AI integration, or multi-platform requirements typically take 10 to 12 weeks. We work in structured sprints so you see real progress throughout the build, not just at the end.
How would we communicate during the project?
We can start with a Zoom meeting to kick off and we'll keep in touch via email and WhatsApp during the project. Our past clients appreciate our prompt response times and clear communication. Just check our reviews.
How much would it cost?
We can give a detailed quote, with the timeline, once you share the specifics. Would you like to book a free consultation call?
Ready to build your mobile app?
Book a free 30-minute call. We'll scope your app, advise on the right platform, and give you a cost estimate before you commit to anything.
Or email hello@exlinelabs.com and we'll reply within 24 hours.
