842 agencies indexed·Latest entry: 17 July 2026
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Service · 116 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
  • 116 UK agencies offering mobile app development
  • Across 26 UK locations
  • Reviewed 18 May 2026
Showing 25-48 of 116 mobile app development agenciesView in full archive
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

Foster & Scott logo
Foster & Scott
Independent·Sheffield·2-10 Employees

Foster & Scott, the innovative design and marketing firm in Sheffield, excels with its audacious creativity. They specialise in conjuring unparalleled experiences that enthrall and interact with audiences. Their expertise spans digital marketing, SEO, website design, and branding, regularly yielding impressive outcomes, validated by a consistent track record. This bold approach sets them apart in

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

Studiomade logo
Studiomade
Independent·London·2-10 Employees

Studiomade, a London-based strategic design and digital agency, excels in assisting businesses to thrive and launch innovative ventures through their expertise in branding, technology, and digital solutions. The agency's distinct mission sets it apart, demonstrating its ability to pivot and excel in a variety of industries. With a unique approach towards developing trailblazing projects such as us

Hi Mum! Said Dad logo
Hi Mum! Said Dad
Independent·London·11-50 Employees

Hi Mum! Said Dad, a UK-based design and build agency, is highly esteemed for its proficiency in innovation strategy, user-focused design, and product development. This reputable agency specialises in transmuting concepts into tangible results via comprehensive customer research, swift prototyping, and avant-garde engineering. With a proven track record of catering to globally recognised clients, H

Futurice logo
Futurice
Network·London·501-1000 Employees

Futurice, a leading digital transformation agency, hails from Finland. The agency distinguishes itself with an exceptional interdisciplinary methodology, merging top-tier technologists, strategists, and designers. They specialise in offering ground-breaking, quantifiable digital solutions spanning various sectors. Renowned for its swift outcomes and enduring influence, Futurice works in concert wi

Mamba Marketing logo
Mamba Marketing
Independent·Cardiff·11-50 Employees

Mamba Marketing, a UK-based, award-winning full-service marketing agency, boasts additional branches in Dubai and the US. Distinguished by an extensive suite of services, Mamba Marketing specialises in B2C and B2B solutions, e-commerce strategies, lead generation, and content initiatives, all tailored to drive short-term victories and sustainable brand expansion. The agency's unique selling propos

DexCloud logo
DexCloud
Independent·Manchester·2-10 Employees

Based in Blackburn, Lancashire, DexCloud is a distinguished digital agency recognised for its proficiency in crafting bespoke digital strategies. Our broad spectrum of services encompasses web development, UX/UI design, software creation, digital marketing, and brand identity development. DexCloud sets the bar high with its unique methodology, taking on the technical burden to allow clients to con

Prospekt Agency logo
Prospekt Agency
Independent·Exeter·2-10 Employees

Prospekt Agency partners with marketing departments and agencies, transforming campaign and communication project concepts into reality. We provide an extensive suite of services, ranging from 3D motion graphics, video production, post-production, image retouching, campaign creation, 3D still imagery, graphic design to web and app development. Our commitment lies in bolstering your brand's persona

Discovery logo
Discovery
Independent·Leeds·2-10 Employees

Discovery Agency, a premier digital marketing firm located in Batley, West Yorkshire, specialises in devising bespoke, data-backed strategies that align with each client's distinct requirements and objectives. Our comprehensive portfolio of services encompasses SEO, PPC, social media management, branding, and website development. As a collaborative partner, we take pride in generating tangible out

Actuate Digital logo
Actuate Digital
Independent·Manchester·2-10 Employees

Actuate Digital, a leading eCommerce agency located in the North West, proudly serves clients in and around Manchester, helping businesses throughout the UK optimise their online stores and enhance user-centric shopping experiences. Our specialities include: - Magento Website Development - Shopify Website Development - eCommerce Strategy Planning We work closely with our clients to understand th

Digital Republic logo
Digital Republic
Independent·Brighton·2-10 Employees

Digital Republic, a bespoke software development firm in Chichester, UK, is renowned for its dedication to business transformation via advanced technology. The brand distinguishes itself by providing innovative, consistently advancing solutions that yield concrete advantages. What differentiates Digital Republic is its cooperative methodology in collaborating with clients, guaranteeing their compr

Brand42 logo
Brand42
Independent·London·2-10 Employees

Brand42, a London-based independent design and digital agency, distinguishes itself through its award-winning methodology in providing strategic branding solutions. Specialising in engaging and globally adaptable digital design, Brand42 is renowned for its unique approach. The innovative one-team strategy employed by the agency successfully bypasses bureaucratic hurdles, thus guaranteeing an exped

Sugar Rush logo
Sugar Rush
Independent·Belfast·11-50 Employees

Sugar Rush, a comprehensive digital agency located in Belfast and Shoreditch, has established itself as a frontrunner in providing result-oriented digital solutions. We work closely with our clients, ensuring fluid and eco-friendly operations while upholding stringent quality control and security measures. Sugar Rush manages all aspects of UX/UI design, programming, and quality assurance testing w

Square Balloon logo
Square Balloon
Independent·London·2-10 Employees

Square Balloon, strategically located in London, UK, is a distinguished agency specialising in branding, marketing, and digital solutions. The unique factor that differentiates Square Balloon is their holistic approach to business enhancement, which involves offering bespoke design, technology, and marketing services, seamlessly integrated to boost business expansion and productivity. The agency i

SourceCodeStudio logo
SourceCodeStudio
Independent·Cambridge·2-10 Employees

SourceCodeStudio, a Suffolk-based Custom Software Development Agency, stands out for its dedication to enhancing profitability via tailored software and mobile app solutions. These bespoke digital products are crafted to optimise operations and boost business efficiency. Our unique blend of in-depth expertise, a client-centric approach, and adaptable pricing ensures delivery of customised, results

Bing Digital logo
Bing Digital
Independent·London·11-50 Employees

As a premier digital agency with offices in London, Dubai, and Los Angeles, Bing Digital is renowned for its data-informed strategies. Our focus lies in crafting exceptional e-commerce websites that merge engaging UX, ground-breaking features, and compelling marketing strategies to optimise conversion rates and brand recall. We are proficient in platforms such as Shopify and Magento, providing a f

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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.