10 Best Mobile App Development Companies in London

Key takeaways

Here is a breakdown of the best mobile app development companies in the UK with their Clutch.co rating, hourly rates, key services, and industry focus.

Top 10 mobile app development companies, UK edition

Explore our list of mobile app development companies in UK to find the best partner for your project.

1. Purrweb 

💰Hourly rate: £25-49

🛠️Services: mobile and web development, cross-platform development, UI/UX design, product discovery

🔍Industry focus: healthcare, edtech, logistics, fintech, IoT

Purrweb is a full-cycle app development company based in Dubai with clients across the U.S., the Middle East, and Europe, including the UK and London. The development team has 10+ years of experience and includes experts who work across multiple skill sets: developers, designers, QA engineers, project managers, copywriters, and business consultants. 

One of their key strengths is the fast time to market for mobile app projects. They offer cross-platform development as an alternative to the native approach, which allows developers to reuse some parts of the code between iOS and Android platforms. It saves up to 40% of costs and helps build an app within 4–5 months.

Purrweb uses an agile development framework that includes an iterative feedback loop. Their mobile app developers split the process into two-week sprints, and after each sprint, the team conducts check-ins and provides opportunities for client feedback.

Purrweb can help with multiple aspects of a mobile app project:

• Mobile app development for iOS and Android platforms
• UI/UX design and audit
• AI integration services
• MVP development to test an app idea
• Outsourcing and outstaffing the projects with experienced developers
• The discovery phase helps define project goals, budget, and timeline

⭐️ Our experience

At Purrweb, we’ve developed mobile app development projects in many niches, including fintech and hospitality. One of the examples is Together, a Montenegro-based ecosystem where restaurant guests can pay the bill via a QR code and leave tips for the waiters. 

2. Stakk

💰Hourly rate: £100-£149

🛠️Services: cross-platform mobile app development services, iOS and Android platforms, UI/UX design

🔍Industry focus: fintech, edtech, healthcare, eCommerce

Stakk is a London-based mobile app development company with 10 years of experience delivering scalable products for startups and global enterprises. They specialize in both native and cross-platform development, and their client list includes some big names like Amazon, Cloudflare, Nivod, and others. 

Stakk covers all the bases of mobile app development projects: design, development, testing, and AI integrations. Outsourcing to this app development company might be pricey for smaller businesses, but for enterprise solutions, it’s a great option.

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3. Infinum

💰Hourly rate: £150-£199

🛠️Services: mobile and web app development, UI/UX design, AI integration

🔍Industry focus: telecom, enterprise, travel, fintech

The Infinum team comprises over 400 engineers, designers, and product strategists in offices across the US and Europe. They have been building mobile app development projects since 2005, and their client roster includes Philips, Coca-Cola, and Disney.

This app development company is known for long-term partnerships and experience in regulated industries like fintech or healthcare. Infinum is a great choice if your project is complex, regulated, or needs to scale internationally, but their expertise comes with a hefty price tag.

4. thoughtbot

💰Hourly rate: £150-£199

🛠️Services: MVP development, mobile app development services, UI/UX design, team augmentation

🔍Industry focus: fintech, edtech, non-profits 

thoughtbot is a design and app development company that has been on the market since 2003. They successfully executed more than 1,000 products for clients like Disney, GitHub, and Vimeo. 

Their approach is human-centered: every mobile app project at thoughtbot typically kicks off with up-front research and a product design sprint. It includes a week of rapid prototyping and real user testing before a single line of production code is written. The strategy suits businesses that aren’t in a rush and prefer to be prepared before entering the market.

5. Innowise

💰Hourly rate: £50-£99

🛠️Services: IT consulting, UI/UX design, web & mobile app development services, cloud technology

🔍Industry focus: fintech, insurance, eCommerce, retail

Innowise is a team of over 3,500 web and mobile app developers who cover projects in North America, Central Europe, the UK, and the Middle East. Key industries they focus on are fintech, insurance, retail, and media.

This app development agency works as both an outsourcing and outstaffing partner, providing specialists to help in-house IT teams. Innowise supports all the stages of the software development process and forms a team depending on the specifics of the project, industry, and technology stack. 

6. Magora

💰Hourly rate: £25-£49

🛠️Services: product discovery, UI/UX design, MVP development, mobile app development services

🔍Industry focus: eCommerce, real estate, pharma & medtech

Magora is a team of UK app developers that started in 2010 in Shoreditch. They have 700+ completed projects under their belt, with a client list that includes AstraZeneca, Toyota, Danone, and Unilever. 

Magora’s approach centers on transparency, open communication, and client engagement. The team is especially strong in product discovery: they invest time upfront to deeply understand the market and the user, before writing any code. 

The hourly rate of this app development company is below the London average, which makes it an attractive option for startups and small businesses.

7. 2Base Technologies

💰Hourly rate: £25-£49

🛠️Services: mobile & web app development, quality assurance, startup consulting, data analytics

🔍Industry focus: edtech, insurance, logistics, SaaS (Software-as-a-Service)

2Base Technologies has 4 offices: in the UK, India, Australia, and the US. The app development agency has served over 200 businesses across a wide range of industries, and proudly shares that they have a 90% client return rate.

These mobile app developers are best suited for mid-size to large businesses that want a technically complex but cost-efficient solution and a partner with global market expertise.

8. TekRevol

💰Hourly rate: £25-£49

🛠️Services: mobile and web app development, AI technology, blockchain, cloud services

🔍Industry focus: gaming, automotive, edtech, logistics

TekRevol is an app development agency founded in 2018, with a London office and a team of almost 500 engineers, designers, and consultants. For their work, they were recognized on the Inc. 5000 list of the fastest-growing companies.

This team of mobile app developers can accommodate projects of different scopes and also help with software integration and data migration for businesses with legacy systems and third-party integrations.

9. Moburst

💰Hourly rate: £150-£199

🛠️Services: web app development and design, UI/UX design, digital marketing

🔍Industry focus: eCommerce, gaming, fintech, media

Moburst is a digital marketing and web app development agency with offices in New York, San Francisco, Tel Aviv, and London. They work with some of the biggest names in tech, including Google, Samsung, Reddit, Uber, Bumble, and YouTube. Perfect for large tech businesses that need to amp up their digital presence.

10. CodeLeap

💰Hourly rate: £50-£99

🛠️Services: web app development, UI/UX design, mobile app development services, consulting

🔍Industry focus: CRMs, hospitality, sports, real estate

CodeLeap is a mobile app development company in London with a mission to get clients from idea to revenue in 6 months. To achieve that, they use cross-platform frameworks like React Native.

The team handles everything from simple app development to machine learning integrations and custom APIs. CodeLeap is a solid option for early-stage companies that need a fast and scalable MVP to test the hypothesis.

Let’s start developing your mobile app today!

After 550+ completed projects, we can create an app in any niche — from fintech to IoT. Contact us and get a free project estimation in 48 hours.

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How much does mobile app development cost in London

The UK app developers on our list have an hourly rate that ranges from £25 to £199. That means that the cost of a mobile app can also range anywhere between £40,000 and £500,000. Quite a big difference, right?

To help you understand what budget to plan for mobile app development projects, we estimated the average cost of a mobile app in the UK with an agency that charges £70 per hour — a median on the market.

How to choose a top app developer in the UK: 3 tips

The best advice is to always do thorough research and study potential mobile app developers before signing a contract. Here are 3 tips from our experts 👇🏻

Check the portfolio

Look at what past cases an app development company has had, and note any projects that match your industry and technical requirements. Diverse portfolios are a good sign: they show that the team can adapt and transfer skills between different niches. This is a good example of a portfolio with expertise across healthcare, IoT, fintech, and more.

Ask questions about the process

A reliable partner will walk you through the process and answer any questions about sprint structure, documentation, how they handle scope changes, and what happens after launch. Make sure that an app development agency assigns you a point of contact, usually a project manager, to stay in touch and provide updates.

⭐️ Our experience

Our clients came to Purrweb with a draft of WAW, or We’re All Winners. Another app development agency completed frontend work and designs, but the results were underwhelming. We took over the development portion of the coupon platform to bring it to completion.

For this mobile app, our team of mobile app developers used the Firebase framework and completed the product within 4 months, even though our initial estimate was 7 months.

Understand the pricing

Before starting the project, you should understand what you are paying for at every stage. Make sure that the mobile app developers provide an estimate, explain how it is calculated, and account for hidden expenses that can come up in the process.

To sum up 

The London scene is full of great and experienced mobile app developers. The choice is yours, but we always recommend making sure that your potential tech partner has the necessary industry expertise, offers transparent pricing, and can provide verified reviews.  For a North American comparison, review app developers in Canada.

➡️ Looking for an app development agency in London? Fill out this form and get a free project estimation in 48 hours.