Top 10 Hybrid & cross platform apps

Companies in London

London is a lively capital and a leader in technology and fintech. In the first quarter of 2024, over 7,250 tech companies were set up, showing the city's strong growth. The value of London’s tech sector has increased to over £600 billion, with venture capital investment rising by 800% since 2014. London has more unicorn companies, or tech firms worth over $1 billion, than any other city in Europe. Several factors drive this success, including strong investment opportunities, a growing fintech scene, and a diverse talent pool in areas like AI, cybersecurity, and green tech. The startup scene in London is thriving, keeping the city at the top in Europe for tech growth. However, challenges like economic uncertainty and the need for affordable tech workspaces still exist. As these issues are tackled, London’s tech sector is set for even more success.

How Did We Pick the Best?

1

Magora

LondonUnited Kingdom

Team Size 50-249
Cost of Services $$$$$ $30-70/h
2025 Awards Winner
2024 Awards Winner
2023 Awards Winner

Service Focus:

Mobile App DevelopmentWeb DevelopmentCustom Software Development + See more

Description

Here at Magora we design and develop digital products including mobile apps, websites and web applications. We concentrate on business needs and build successful software with user-centered interaction design and scalable software architecture. Whether a B2C or a B2B project, iOS or Android app, first of all, we take the time to understand your goals, your product and the end-user’s needs. Our software development cases are loved by users for the...

Our Take

Magora has built a solid reputation as a reliable agency through years of experience, satisfied clients, and a diverse portfolio. Their TechBehemoths profile perfectly captures their industry know-how and skills.
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2

Kernelics

LondonUnited Kingdom

Team Size 50-249
Cost of Services $$$$$ $30-70/h
2025 Awards Winner
2024 Awards Winner

Service Focus:

Web DevelopmentIT Staff AugmentationMobile App Development + See more

Description

Welcome to Kernelics, where a blend of technology and creativity thrives. Our dedicated team of web and mobile software developers, product managers, designers, and QA engineers specializes in accelerating product development, catering to both startups and established tech companies.What We Offer:Staff Augmentation: We provide flexible, cost-effective remote development teams within 1-4 weeks. Augment your IT staff with our top developers and spe...

Our Take

Top Recommendation! Kernelics is a highly rated company with a strong profile on TechBehemoths based on its vast experience, positive client testimonials, and a solid portfolio. You can confidently reach out to them with your project inquiry.
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3

Timspark

LondonUnited Kingdom

Team Size 50-249
Cost of Services $$$$$ $30-70/h
2025 Awards Winner
2024 Awards Winner

Service Focus:

IT Staff AugmentationCustom Software DevelopmentMobile App Development + See more

Description

Timspark is a UK-registered custom software development partner with delivery centers across Europe (Poland, Lithuania, Georgia) and a distributed presence including Latvia. We bring together 1,000+ vetted engineers and 30+ pre-built teams, serving 200+ clients across finance, healthcare, retail, logistics, manufacturing, and more.How we engageWe offer Core Teams (pre-built, domain-savvy units with clear ownership), Dedicated Teams, Team Augmenta...

Our Take

Timspark is a dedicated team delivering results. Each member brings unique skills and love for what they do. Their attention to detail ensures that every client receives personalized and effective solutions. Check out their portfolio on TechBehemoths to see more Timspark projects.
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4

Stakk

LondonUnited Kingdom

Team Size 10-49
Cost of Services $$$$$ $70-150/h
2024 Awards Winner
2023 Awards Winner

Service Focus:

Mobile App DevelopmentUX/UI DesignArtificial Intelligence

Description

Stakk is the UK's #1 mobile app development company, rated #1 on TechBehemoths and based in London with over 10 years of experience building custom iOS apps, Android apps, and cross-platform mobile applications for startups and global enterprises.We are a leading mobile app development agency specialising in React Native, Flutter, native iOS and Android development, and AI-powered mobile solutions. Our 100% in-house senior team has delivered 120+...

Our Take

Out of 50,000 IT companies listed on TechBehemoths, Stakk is one that we could recommend for their services. Their reputation lies on facts such as 10 years of experience, 9 projects delivered and more than 5 happy clients. It is very likely that they could help you with your next IT project
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5

Pixelette Technologies

LondonUnited Kingdom

Team Size 250-999
Cost of Services $$$$$ $30-70/h

Service Focus:

Artificial IntelligenceBlockchainWeb Design + See more

Description

Pixelette Technologies has been awarded ‘Best AI Agency’ in the UK three times by the Scottish Business Awards along with many other accolades. Whether you’re a budding entrepreneur with limited tech skills, an established business moving towards rapid expansion, or a government functionary looking to redefine efficiency, we offer end-to-end IT services in the realm of AI and Blockchain.  We see tech as a means to...

Our Take

Pixelette Technologies works with small and medium enterprises as well as start-ups. The company's priority is customer happiness, which is built on teamwork and passion. We invite you to take a look at their offerings and decide if they are a good fit for you.
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6

Plavno

LondonUnited Kingdom

Team Size 50-249
Cost of Services $$$$$ $30-70/h
2025 Awards Winner
2024 Awards Winner
2023 Awards Winner

Service Focus:

Mobile App DevelopmentArtificial IntelligenceDesktop App Development + See more

Description

Plavno is an AI-first software development company that helps businesses design, build, and scale intelligent digital products. We work with startups, enterprises, and technology-driven organizations that want to turn innovative ideas into reliable, high-performance solutions.Our multidisciplinary team covers the entire product lifecycle — from business analysis and product strategy to UI/UX design, custom software development, quality assurance,...

Our Take

Known for its credibility, Plavno has vast experience, excellent customer feedback, and a strong portfolio. Their TechBehemoths profile is proof of their experience and knowledge in the field.
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7

THEY.dev

LondonUnited Kingdom

Team Size 10-49
Cost of Services $$$$$ $30-70/h
2025 Awards Winner

Service Focus:

Custom Software DevelopmentWeb DevelopmentMobile App Development + See more

Description

We create bespoke software for startups. Our goal is to make our clients successful through technology. We work closely with our clients to understand their needs and propose cost-effective solutions. We believe in transparency and honesty, giving access to the code from day 1. We are a UK company located in London. WHAT WE DO: create bespoke web (browser-based) applications create bespoke mobile applications build innovations for startup maintai...

Our Take

Out of 50,000 IT companies listed on TechBehemoths, THEY.dev is one that we could recommend for their services. Their reputation lies on facts such as 9 years of experience, 10 projects delivered and more than 3 happy clients. It is very likely that they could help you with your next IT project
View profile Contact THEY.dev
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