App Development Agency in London

London app developers for iOS, Android and web apps

London App Development (LAD) is an app development company in London. We design, build and support iOS, Android and web apps for startups and growing businesses, from a first MVP to a full product.

What UK clients say about our app developers

London App Development is part of Intelivita. These reviews were left on Clutch for apps Intelivita built. Each quote is word for word, with a link to the full review.

Apps for London businesses

We have built apps for London clients, including a black taxi company, a wellness company and an app agency. Our office is in East Ham.

Verified Clutch review Rated 5.0 out of 5 May 2023

"Intelivita has done all that we asked on time, and then adapted it all to suit our constant adjustments."

Mike HarrisFounder & CEO, Unify London Taxis Limited

Read on Clutch Case study

Clear plan, regular updates

We agree the scope, cost and milestones before work starts, then keep you updated as we build. Ostique had weekly status reports and calls.

Verified Clutch review Rated 5.0 out of 5Jan 2024

"Not only did they hit every milestone on time and within budget, but they have been an absolute pleasure to work with."

Olivia RoseCMO, Ostique Ltd

Read on Clutch Case study

One project manager, start to finish

You get one named project manager who handles your questions, updates and changes, so you are never passed from person to person.

Verified Clutch review Rated 5.0 out of 5May 2023

"They handled the project management well and delivered on time. Shishir was particularly helpful and a pleasure to deal with."

Managing DirectorWellness and fitness company, London (name withheld)

Read on Clutch Case study

4.8/5 from 52 reviews of Intelivita on Clutch

Read all 52 reviews on Clutch

App development services in London

We design, build and support mobile and web apps, and the software behind them. Pick a service to see what it covers and a project we have delivered.

01 / 06 · App Development

Mobile app development

We build native iOS and Android apps, and cross-platform apps in Flutter and React Native, from a first MVP to a full product.

On-Demand Taxi Booking App Unify London Taxis Black taxi booking app · iOS and Android · June 2022 to May 2023 Read the case study
Discuss your project All app development services

02 / 06 · UI/UX Design

App design and UI/UX

We design every screen and user journey, then give you a clickable prototype to test before any code is written.

What we build

  • App design Screens for iOS and Android that follow each platform’s rules
  • Wireframes and user journeys How the app works, agreed before design starts
  • Clickable prototypes Test the app in Figma before you pay for the build
  • Usability testing Watch real users try the app and fix what trips them up
  • Web design Websites and admin panels that match your app
  • Design handover Figma files your developers can build from
Sports MowMow Social sports app · designed from wireframes · iOS, launched December 2019 Read the case study
Discuss your project All design services

03 / 06 · AI Development

AI features for apps

We add AI features to new and existing apps where they save your users time, with clear rules on what data the AI can see.

What we build

  • AI chatbots Answer customer questions inside your app
  • AI agents Handle multi-step tasks for your users
  • Generative AI Add text and image generation to your app
  • LLM integration Connect your app to large language models
  • Machine learning Predictions and recommendations from your own data
  • AI consulting Find out where AI is worth building, and where it isn’t
NO AI CASE STUDY YET Tell us what you want AI to do We’ll say whether it’s worth building, what it will cost and how your data is handled. Book a call
Discuss your project All AI services

04 / 06 · Software Development

Custom software development

We build business software around how your team works, and connect your app to the systems you already use.

Human Resources (HR) Talentbase Chef staffing apps and admin panel for a London temping agency · since January 2024 Read the case study
Discuss your project All software services

05 / 06 · Web Development

Web development

We build web apps, SaaS platforms and admin panels that work alongside your mobile app.

Healthcare, Wellness Meditation web app Web app for a London app agency · HTML and PHP · February to April 2019 Read the case study
Discuss your project All web development services

06 / 06 · Game Development

Mobile game development

We build mobile games for iOS and Android, including AR games, in Unity for 2D and 3D.

What we build

  • iOS games Games for iPhone and iPad on the App Store
  • Android games Games for phones and tablets on Google Play
  • Unity 2D and 3D games One game engine for both platforms
  • AR games Games that place characters in the real world
  • VR games Games for virtual reality headsets
  • Game updates and support New levels, fixes and OS updates after launch
Client Review Android game for a London TV production company 5.0 on Clutch · October 2019 to February 2020 Read the review on Clutch
Discuss your project All game development services

Industries we build apps for

We build custom apps for the sectors below. Each card lists the features we build most often and a project that shows it.

  • Taxi Booking

    Ride Booking • Driver App • Live Tracking • Payments

  • Food Delivery

    Ordering • Restaurant Panel • Delivery Tracking • Payments

  • Real Estate

    Property Listings • CRM • Virtual Tours • Booking

  • Car Wash

    Bookings • Payments • Loyalty • Service Management

  • Health & Fitness

    Telemedicine • Appointments • Wearables • Health Tracking

  • Travel & Tourism

    Booking Engine • Itineraries • Payments • Travel Guides

  • Media & Entertainment

    Streaming • OTT • Content Management • Subscriptions

  • Instant Messaging

    Chat • Voice & Video • Notifications • File Sharing

  • Finance

    Digital Wallet • Banking • Investments • Payments

  • Social Media

    Feeds • Messaging • Communities • Live Streaming

  • eCommerce

    Marketplace • Shopping Cart • Payments • Inventory

Technologies We Use for Mobile App Development

We use native iOS and Android when performance and device features matter most, and Flutter or React Native when one codebase for both platforms saves time and budget.

Frontend

We create modern web and frontend solutions using the latest frameworks.

React Angular Next.Js Vue.Js Flutter Kotlin HTML5 CSS3 Swift Xamarin
Backend

Scalable architecture that grows with your user base.

Node.Js Python Ruby On Rails PHP Java Django Express.Js Spring Boot
Platforms

Native when performance matters, cross-platform when speed does.

React Native Android iOS Flutter
Database

Data infrastructure that scales without surprises.

MongoDB MySQL Firebase PostgreSQL SQLite Oracle
UI/UX

Seamless handover from prototype to production.

Adobe XD Sketch Figma InVision Zeplin

Our app development process

Six stages take your app from idea to launch. We test at every stage, and offer support after launch. Check out our detail guide on mobile app development process

01

Planning

We first define your product vision, technical requirements, and target audience to ensure your project is scoped, correctly budgeted, and built to deliver measurable ROI.

Why choose LAD as your app development company in London?

Choose LAD if you want to see what we built, what it cost and what clients said before you hire us. One team handles design, build, testing and support.

A Decade of UK Leadership

Co-founder Dhaval Sarvaiya has built apps since 2010, starting as an iOS developer.

Six clients told Clutch what they spent, from about £4,000 to £55,000. See the case studies..

Taxis, food, health, sport, education, retail, energy and more, each with a case study or Clutch review.

Planning, design, development, testing and support, with one project manager as your contact.

You sign off clickable Figma designs before development starts.

AI-Powered Mobile App Solutions

AI-powered mobile app development solutions integrate machine learning, generative AI, LLMs, and automation into your mobile product to improve personalisation and user engagement.

London App Development applies AI throughout the build process, automating testing, reducing technical debt, and accelerating delivery for startups, SMEs, and clients in healthcare, retail, transport, and hospitality. We use AI to solve the challenges your business faces and deliver measurable results, from real-time fraud detection and symptom analysis to recommendations and route optimisation.

  • Our Capabilities
  • Machine Learning Models
  • Generative AI Integration
  • LLM Development
  • AI Automation
  • AI Chatbot Development
  • Industries We Serve
  • Fintech & Banking
  • Healthcare & Diagnostics
  • Retail & eCommerce
  • Transport & Logistics
  • Hospitality & Travel
Initializing Neural Core...
Predictive Action
Smart Validation

Meet the team behind your app

The people who plan, design and build your app.

Portfolio

Our Works

Glance through the many masterpieces that our mobile app developers have crafted using a fine blend of art and technology.

Fitness App 1
Fitness App 2
Taxi App 1
Taxi App 2
Event and Video App 1
Event and Video App 2
Food App 1
Food App 2
View Our Projects

Featured blogs keep you up to date with the latest insights and expert guidance from the London App Development team in mobile, AI, and software development.

Top Android App Development Frameworks

Top Android App Development Frameworks

Explore the top Android development frameworks to enhance your Android app creation. Find out which frameworks offer the best features and efficiency for developers.
Custom App Design and Development Agency London FAQs

How do Custom App Development Services Work?

Custom app development services work through the end-to-end process, from initial discovery and wireframing through to design, development, testing, and deployment. We customise every stage to your requirements for iOS, Android, or cross-platform.

The services included in our mobile app development are strategy and consultation, UI/UX design, frontend and backend development, API integration, quality assurance, and post-launch support.

The types of mobile apps that app developers can build are listed below.

  • Native Apps: Native apps are built for a single platform, using Swift for iOS or Kotlin.
  • Cross-Platform Apps: Cross-platform apps developed using Flutter or React Native to run on a single codebase.
  • Progressive Web Apps (PWAs): Web-based applications that behave like native apps on a device without requiring an App Store download.
  • eCommerce Apps: Mobile shopping apps featuring catalogues, payment gateways, and recommendations.
  • On-Demand Apps: Real-time service for taxi, food delivery, and home services with providers instantly.
  • Social Media Apps: Networking apps enabling user profiles, messaging, content sharing, and real-time interaction at scale.
  • Healthcare Apps: Medical and fitness apps featuring appointment booking, symptom tracking, and telemedicine tools.
  • Fintech Apps: Financial applications for banking, payments, and investment with real-time data processing.
  • Enterprise Apps: Internal workflow systems built for SMEs and organisations to simplify operations.
  • SaaS Apps: Cloud-based subscription platforms and multi-user dashboards built for different industries.

LAD differs from other agencies by operating as a full-service, in-house team rather than outsourcing work to third-party contractors, ensuring quality in every project. We take a business-first approach, aligning every decision with your commercial objectives, timeline, and budget, and delivering beyond launch, where most agencies just focus on delivery alone.

Yes, we can rebuild a poor-quality app. LAD conducts a technical audit to identify performance issues, security vulnerabilities, and UX shortcomings before rebuilding it on a clean, scalable architecture that meets current platform standards.

Yes, we can turn a website into a mobile app. We analyse your existing website and rebuild it as a native or cross-platform mobile app for iOS and Android, retaining your core functionality while delivering a faster mobile experience.

It takes 4 weeks to 9 months to develop a mobile application, depending on complexity, features, and platform requirements. A simple app takes 4 to 6 weeks. A mid-complexity app with API integrations takes 3 to 6 months, and a fully customised enterprise application takes 6 to 9 months or more.

Features influence app development timelines through the volume of user login and push notifications, adding minimal time, while real-time GPS and AI integration extend the development cycle. The more custom and interconnected the features, the longer the development, testing, and QA process.

The common challenges in app development are listed below.

  • Platform Fragmentation: Maintaining performance in multiple devices, screen sizes, and OS versions requires cross-platform testing.
  • Security and Data Privacy: Meeting GDPR compliance and protecting user data against breaches is a legal responsibility in every mobile project.
  • Performance Optimisation: Delivering fast load times, smooth animations, and low battery consumption in all devices demands architectural refinement.
  • Third-Party Integration: Connecting payment gateways, APIs, and external services introduces compatibility risks and bugs without integration testing.
  • Scope Creep: Unplanned feature additions and shifting requirements are among the most common app development challenges that push timelines beyond their original scope.

Developing a mobile app costs between £5,000 and £150,000, depending on complexity, platform, and features. The full app development cost varies based on design, third-party integrations, testing, and post-launch support requirements.

The factors Affecting Mobile App Development Pricing are listed below.

  • Platform Choice: Building for iOS and Android requires more development time than a single or cross-platform build.
  • App Complexity: More features, screens, and custom functionality mean more development hours and a higher cost.
  • Third-Party Integrations: Adding payment gateways, APIs, and services (Google Maps or Stripe) increases development and licensing costs.
  • Design Requirements: Customised UI/UX with animations and branded components are key factors affect app development cost, requiring more design hours than a standard approach.

To know how app development companies estimate project costs, follow the five steps listed below.

  • Define Project Scope. Gather requirements covering target platforms, features, and specifications to establish an estimation baseline.
  • Break Down the Work. Divide the project into tasks and components, assigning estimated hours to each feature, screen, and integration.
  • Assess Technical Complexity. Evaluate each component, including third-party APIs and custom functionality, to identify high-effort areas.
  • Factor in Design and QA. Calculate UI/UX design, prototyping, and quality assurance hours separately and add them to the project estimate.
  • Apply Team Rates and Overheads. Multiply total estimated hours by the team's hourly rates, factoring in project management and post-launch support to produce the final cost.

Yes, there are affordable app development services for startups. We offer flexible engagement models and MVP-focused development to help startups launch a market-ready product within budget, with the option to scale features and functionality as the business grows.

To hire an app developer in London, follow the seven steps listed below.

  1. Define Your Project Requirements. Outline your app's features, target platform, budget, and timeline before approaching the development team.
  2. Research and Shortlist Agencies. Search for London-based app developers, filtering by portfolio, client reviews, and industry experience.
  3. Review Portfolios and Case Studies. Assess previous work to verify technical capabilities and design quality.
  4. Request Proposals and Quotes. Share your project brief and request detailed proposals outlining approach, timeline, and cost.
  5. Evaluate Technical Expertise. Assess proficiency in your required technologies (Swift, Kotlin, Flutter, or React Native).
  6. Check References and Reviews. Read verified client reviews and speak to previous clients to validate reliability, quality, and delivery track record.
  7. Partner with App Development. Contact LAD to discuss your project, receive a proposal, and start off your build.

Businesses should hire an app development company in London because it delivers end-to-end development, clear communication, and post-launch support, removing the risks of offshore outsourcing and fragmented project management. LAD provide access to developers with deep knowledge of the UK market, user expectations, and regulatory requirements.

To know the best type of app for your business, follow the four steps listed below.

  1. Identify Your Target Audience. Define who your users are, how they access digital products, and which devices they use most.
  2. Assess Your Features and Functionality. Determine the features your app needs to deliver, including GPS, camera, or push notifications.
  3. Set Your Budget and Timeline. Establish how much you can invest and how quickly you need to launch.
  4. Consult an App Development Expert. Speak with a specialist team from London App Development to evaluate your requirements.

The benefits of hiring mobile app developers in London are listed below.

  1. Local Market Knowledge. London developers understand UK consumer behaviour, GDPR compliance, and industry-specific regulations.
  2. Direct Communication. Working in the same time zone ensures faster responses, clearer updates, and more productive collaboration.
  3. Access to Top Talent. London's tech ecosystem offers developers in Swift, Kotlin, Flutter, React Native, AI, and AR.
  4. End-to-End Accountability. LAD manages every stage in-house with full transparency from strategy through to post-launch support.
  5. Stronger Business Alignment. Local developers align technical decisions with your objectives to deliver ROI.

A London App Development agency helps businesses grow by turning apps into revenue channels through e-commerce or on-demand services, enabling expansion into new UK markets. LAD combines full-cycle development, AI integration, and post-launch support to deliver the app development businesses benefits needed to acquire users, retain them, and scale.

Expect end-to-end app design, development, testing, and deployment from a Mobile App Development Company in London. A reliable partner must provide solutions and ongoing technical support.

The risks of hiring cheap app developers in the UK are listed below.

  1. Poor Code Quality. Low-cost developers deliver poorly structured code that leads to security vulnerabilities and costly issues.
  2. Missed Deadlines. Cheap development teams lack the project management processes needed to deliver on time, leading to delays that affect your launch.
  3. Limited Technical Expertise. Budget developers lack proficiency in Flutter, React Native, or Swift, leading to outdated and underperforming products.
  4. No Post-Launch Support. Low-cost agencies rarely offer maintenance, leaving your app exposed to bugs, compatibility issues, and security risks after deployment.
  5. Hidden Costs. Initial low quotes exclude testing, iterations, and integrations, resulting in a final cost that far exceeds what an agency has charged from the outset.

The support services that app development agencies provide are listed below.

  • App Maintenance: Update and fix bugs to keep your app secure and compatible with the latest OS versions.
  • Performance Monitoring: Track app speed, uptime, and user behaviour.
  • Security Updates: Apply patches and security fixes to maintain GDPR compliance.
  • Crash Reporting and Bug Fixes: Detect, diagnose, and resolve crashes and technical errors to maintain a user experience.
  • App Store Optimisation (ASO): Manage app store listings, keywords, and metadata to increase download rates on the App Store.
  • Third-Party Integration Support: Maintain and update API connections, payment gateways, and external service integrations as platforms evolve.
  • Analytics and Reporting: Monitor user engagement, retention, and conversion data to inform product decisions.
  • Technical Consultation: Advise on technology upgrades, platform migrations, and new development opportunities.

To understand how agencies handle bug fixes and security updates, follow the six steps listed below.

  1. Monitor and Detect. Track app performance using monitoring tools to identify crashes and unusual behaviour in real time.
  2. Log and Prioritise. Record detected issues and rank them by severity, assigning security vulnerabilities and app-breaking bugs as the highest priority.
  3. Diagnose the Root Cause. Analyse error logs, user reports, and system data to pinpoint the exact source of each bug or security gap.
  4. Develop and Test the Fix. Build the code and run testing to confirm the issue is resolved without introducing new problems.
  5. Deploy the Update. Push the verified fix to production via a staged rollout, minimising disruption to active users.
  6. Verify and Monitor Post-Fix. Confirm the fix is performing as expected in the live environment and continue monitoring to ensure the issue does not recur.

To understand how agencies monitor app performance, follow the seven steps listed below.

  1. Integrate Monitoring Tools. Implement Firebase, New Relic, or Datadog to collect real-time data.
  2. Track Key Performance Metrics. Measure load times, crash rates, API response times, and memory usage to establish a baseline.
  3. Analyse User Behaviour. Review session data, heatmaps, and user flows to identify friction points.
  4. Set Performance Benchmarks. Define thresholds for speed and uptime, triggering alerts when metrics fall below standard levels.
  5. Identify and Escalate Issues. Flag anomalies and recurring errors to the development team for immediate investigation.
  6. Optimise and Deploy Improvements. Apply code optimisations, infrastructure upgrades, and caching strategies to resolve bottlenecks.
  7. Report and Review Regularly. Compile scheduled performance reports to track trends and inform future development decisions.

App security maintenance is critical because vulnerabilities in mobile applications expose sensitive user data, lead to GDPR breaches, and cause reputational and financial damage to businesses operating in fintech, healthcare, and e-commerce.

The mobile applications should be updated every 4 to 6 weeks to implement bug fixes, apply security patches, and address OS compatibility changes in iOS and Android. Regular updates ensure your app remains stable, secure, and aligned with the latest platform standards set by the App Store and Google Play.

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Phone +44 753 713 2299
Email sales@londonappdevelopment.co.uk
Address

182-184 High Street North, East Ham, London, United Kingdom, E6 2JA

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