902 agencies indexed·Latest entry: 16 October 2026
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Service · 125 agencies

Mobile App Development agencies.

Mobile App Development is the build of iOS and Android applications, native (Swift or Kotlin) or cross-platform (React Native, Flutter, or Capacitor), covering discovery, UX and UI design, engineering, QA on real devices, App Store and Google Play submission, and post-launch maintenance. It sits next to web development but answers to a different set of platform rules.

At a glance
  • 125 UK agencies offering mobile app development
  • Across 29 UK locations
  • Reviewed 18 May 2026
Showing 25-48 of 125 mobile app development agenciesView in full archive
Krishang Technolab logo
Krishang Technolab
Specialist·Leicester·11-50 Employees·Verified

Krishang Technolab's AI-powered software, mobile apps, and digital marketing solutions will help you expand your business faster than ever. We use creative, data-driven technology to help businesses optimize processes, increase consumer engagement, and achieve measurable results.

Leads Brain LTD logo
Leads Brain LTD
Specialist·Manchester·51-200 Employees·Verified

Boost your local visibility with Google Business Profile optimization, SEO for small businesses, and responsive website development. We help businesses grow online with affordable SEO services, faster websites, and better Google rankings that bring in more local traffic and real leads.

Lumi Studio logo
Lumi Studio
Independent·Edinburgh·2-10 Employees·Verified

Lumi Studio is a senior product design and development studio for complex, data-rich digital products. Based in Edinburgh and working across the UK, Europe and North America, we help growth-stage startups and established product teams design, build and grow software people rely on every day. Products we have helped create are used by 50+ million people, and we have been part of 4 exits, including acquisitions by Atlassian, IAC and Hivebrite.

Modal Digital logo
Modal Digital
Independent·Manchester·11-50 Employees·Verified

Modal® is a forward-thinking, Manchester-based web design and branding agency committed to transforming the way ambitious brands connect with their audiences online. We use industry-leading coding techniques and strategic brand storytelling to help you achieve lasting impact and measurable results.

RVS Media logo
RVS Media
Specialist·London·51-200 Employees·Verified

Award-Winning Custom Web & Software Development Company in London, helping businesses across the UK build, scale & innovate with custom websites, software, ecommerce, mobile apps, AI integration & digital transformation services.

Sharkfold Ltd logo
Sharkfold Ltd
Independent·London·11-50 Employees·Verified

Marketing Agency in London To help your business grow, Sharkfold digital marketing company makes bold decisions. We provide tailored tactics to reach your target audience and achieve your business goals. Increase brand visibility, leads, and sales with our services. We strive to serve our clients well. We'll learn about your business and goals and utilize our knowledge to help you succeed. SEO, PP

Si digital logo
Si digital
Independent·Portsmouth·11-50 Employees·Verified

For over two decades, we've built websites, apps, and software that bring clarity, efficiency, and brand impact to ambitious global businesses.

Siruss logo
Siruss
Independent·Shrewsbury·2-10 Employees·Verified

Siruss is a full-service digital agency based in Shrewsbury, Shropshire. We work with businesses as their digital partner, providing best-in-class web design, development, SEO and digital marketing.

Storm Digital logo
Storm Digital
Independent·London·2-10 Employees·Verified

Surrey-based developers and creators building web, mobile, AR/VR and AI experiences for clients across Surrey and London - hands-on from first idea to launch, for start-ups through to global brands.

Webskitters logo
Webskitters
Independent·London·201-500 Employees

Recognised worldwide, Webskitters LTD is an award-winning company, excelling in web and app design/development, alongside digital marketing. Our specialisation in these areas sets us apart, providing unparalleled services in web design and development. Our proficiency and the innovative integration of cutting-edge technologies cater to a diverse global clientele. Founded in 2010, Webskitters has e

Sound In Theory logo
Sound In Theory
Independent·Exeter·11-50 Employees

For a decade and a half, Sound In Theory, a distinguished company rooted in Exeter, has been flourishing. The organisation has meticulously put together a squad of specialists who are enthusiastic about undertaking the challenging endeavours that our clientele requires. By consciously cherry-picking projects, Sound In Theory guarantees the provision of top-tier services that it holds in high regar

Inc Studio logo
Inc Studio
Independent·Liverpool·2-10 Employees

Inc Studio transcends simple business collaboration, focusing on forming strategic alliances. Leveraging its broad expertise across various sectors, Inc Studio is committed to providing a comprehensive, outcome-focused service. By joining forces with key players in the B2B realm, Inc Studio seeks to transform each sector with groundbreaking strategies customised to each business's unique goals. In

Drool Design Studio logo
Drool Design Studio
Independent·London·2-10 Employees

Drool Design Studio, a London-based design agency, epitomises the fusion of Caribbean and British influences. Our specialisms include website design, app development, branding, and cross-platform coding, particularly in Webflow, WordPress, and Shopify. What truly sets our studio apart is our culturally diverse team and bespoke approach to crafting immersive digital experiences. Our ethos centres a

PRISM 55 logo
PRISM 55
Independent·London·2-10 Employees

PRISM⁵⁵ is a forward-thinking digital firm with its roots in Guildford and Exeter, UK. Renowned for its commitment to achieving tangible outcomes, PRISM⁵⁵ champions a cooperative, strategy-led approach that prioritises critical questioning to formulate efficient strategies swiftly. Combining cutting-edge design with advanced development and imaginative marketing, PRISM⁵⁵ crafts secure, robust, and

Chameleon logo
Chameleon
Independent·London·2-10 Employees

Chameleon is a UK and Ukraine-based digital agency, excelling in delivering powerful digital solutions for non-profits and charities. Our agency differentiates itself by harnessing intelligent technology to streamline processes, lower costs, and amplify service efficacy, thus extending swift help to a broader demographic. Solely devoted to generating social impact, Chameleon strategically employs

Tiny Spark logo
Tiny Spark
Independent·Bristol·2-10 Employees

Tiny Spark, a UK-based inventive agency, excels in designing engaging interactions for both physical and online landscapes. This agency distinguishes itself through the integration of strategic planning, user-focused design, and advanced technology to produce captivating narratives and quantifiable outcomes. Cooperating with B Corporations and clients sharing similar values, Tiny Spark crafts impa

Rant Agency logo
Rant Agency
Independent·Cardiff·11-50 Employees

Rant Agency, a celebrated UK-based mobile app development firm, excels in revolutionising businesses digitally via crafting custom-made mobile and web applications. Catering to a wide array of clientele, from emerging startups to international brands in the private, public, and non-profit sectors, our expertise shines through. Since our inception in 2003, we've forged robust alliances, providing a

Sonat Co. logo
Sonat Co.
Independent·London·2-10 Employees

Sonat Co., a London-based digital marketing agency, is renowned for its customised digital strategies and data-driven proficiency, purposefully crafted to amplify brands' online visibility and deliver extraordinary outcomes. Concentrating on digital media marketing, along with web design and development, Sonat Co. provides innovative solutions to uplift brands and propel businesses towards success

Motion 12 logo
Motion 12
Independent·Leeds·2-10 Employees

Motion 12, a Leeds-based digital agency, excels in crafting user-focused, inventive digital experiences. This agency distinguishes itself through an extensive assortment of services such as digital design, software engineering, motion design plus animation, and performance optimisation. Each service is meticulously customised to manifest clients' digital dreams into reality. Our dynamic and profic

Bryter Digital logo
Bryter Digital
Independent·Kent·2-10 Employees

Bryter Digital, a Canterbury-based digital agency, excels in delivering customised website designs and digital solutions, specifically tailored to suit business requirements. Bryter Digital's distinctive edge lies in its extensive array of services, encompassing web and mobile app creation, bespoke digital platforms, digital marketing strategies, SEO, e-learning solutions, and content development,

Forward Digital logo
Forward Digital
Independent·London·2-10 Employees

Forward Digital, a distinguished software development agency in the UK, excels in crafting personalised websites and mobile applications. They equip inventive businesses with customised software solutions, specifically designed to overcome individual obstacles and promote expansion. Their unique selling point is their cooperative methodology, which includes clients in every step of the development

GGMR logo
GGMR
Independent·Bath·2-10 Employees

GGMR, a leading technology agency headquartered in Corsham, UK, boasts a distinct proficiency in navigating complex technical challenges. Known for innovating within and beyond existing systems, they're recognised for their managerial prowess in multi-platform, multi-partner projects. Specialising in intricate data integration, user experience (UX), and the development of cutting-edge tech platfor

CWS Agency logo
CWS Agency
Independent·Leicester·2-10 Employees

CWS is a leading digital agency nestled in the heart of Loughborough, Leicestershire. As a dynamic team of innovators, we thrive on crafting solutions and generating transformative impacts for our clientele. Choosing the perfect partner for your pivotal project can be a daunting task. However, at CWS, we possess the knowledge and skills required to assist you in bringing your project to fruition

Ledgard Jepson logo
Ledgard Jepson
Independent·Sheffield·11-50 Employees

Situated in Sheffield, South Yorkshire, Ledgard Jepson is a renowned branding agency with an impressive track record spanning over 35 years. They are recognised for their unwavering dedication to providing brand clarity, crafting brands that narrate captivating tales and make a powerful impact across all platforms. Their all-inclusive suite of services encompasses strategic branding, clever design

Editor's note
Mobile App Development in the UK splits, in 2026, into three honest tiers. Boutique studios ship MVPs in the £15,000-40,000 band. Mid-market agencies running production apps with custom backends, payments, and proper QA sit at £30,000-180,000. Enterprise dev houses handle regulated multi-team builds from £150,000 into six figures. AgencyIndex tags 115 UK agencies as Mobile App Development providers. The stack shapes the bill. Native iOS or Android wins on platform polish and deep OS integrations. React Native and Flutter have closed most of the gap for standard product work and run one codebase across both platforms, which is why most new UK briefs land there. Capacitor and hybrid builds are cheapest but expensive to retrofit later. Three shifts now sit underneath every brief. The EU Digital Markets Act has opened sideloading on iOS in Europe. App Tracking Transparency and Google Play's Data Safety form have made privacy disclosures a release-blocking item, not a launch-week afterthought. And AI-assisted development is compressing the cost of boilerplate without touching the cost of discovery, architecture, QA, or store submission. Filter the index by platform, stack, sector, and ownership to find who is actually doing the work.
Typical cost
£25,000-500,000+
per project

MVP / lean build £15,000-70,000 · Full production app £40,000-180,000 · Enterprise or regulated £150,000-500,000+. Capacitor / hybrid cheapest at £10,000-80,000. Maintenance retainers typically 15-20% of build cost per year.

Realistic timeline
12-32 weeks per app
MVP to production launch

Discovery 1-3wks · Design 2-6wks · Build 4-16+wks · QA on device matrix 1-4wks · App Store / Play submission 1-3wks (review 1-7 days). Complex enterprise builds run 6-12 months. Maintenance is ongoing.

Red flags
6 to watch
in any pitch
  • · Refusal to name the actual delivery team or disclose if work is being subcontracted offshore
  • · QA done only on simulators with no real-device matrix across iOS and Android versions
  • · No App Store Optimisation, no help with screenshots, metadata, privacy labels, or review rejections
  • · No SLA on bug fixes, no warranty period, no defined severity levels in the contract
  • · Proprietary backend or framework with no clear source code, infrastructure, or data ownership at handover
  • · Cannot speak fluently about App Tracking Transparency, Google Play Data Safety, or EU DMA distribution rules
Frequently asked

What brands ask about mobile app development agencies.

5 questions our editors get most often, answered honestly. No agency-marketing speak.

Curated by humans

UK mobile app pricing splits by complexity and team type. A lean MVP from a boutique studio runs £15,000-40,000, mid-market agencies £30,000-70,000, and enterprise dev houses £60,000-120,000 and up. Full production apps with payments, custom backends, and proper QA sit at £40,000-180,000 across the mid-market, climbing past £400,000 for regulated or enterprise work. Capacitor and hybrid builds are cheapest at £10,000-80,000. Maintenance retainers typically run 15-20% of the build cost per year.