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Bespoke Mobile App Development

We build custom iOS & Android applications in weeks, not months.

Delivering a seamless native mobile experience to your customers, clients or employees has become more essential than ever, especially as the 'self-serve' concept has become popular. We have delivered hundreds of Mobile Applications for startups like Cleo and FTSE 100 businesses like Admiral.

Get in touch and tell us about your project!


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Discuss Your Project


Discover Our High-End Mobile App Development Services

Building a bespoke mobile application that has a smooth UX, and powerful functionality and you are without breaking the bank can be tricky. You must choose the right technology, be it React Native, Flutter or going native entirely, so you can build a high-quality app on iOS & Android at speed, whilst leveraging industry best practices.

Mobile app development process

From information architecture and workflows, through to wireframing and prototypes. Part of the planning phase includes identifying the skills needed for your app development initiative. For example, iOS and Android mobile platforms use different development technology stacks. If your goals are to build a mobile app for both iOS and Android mobile platforms then, your mobile development team should include iOS developers and Android developers.

Mobile App development is an ongoing process and will continue after the initial launch as you receive user feedback and build additional functionality. Theodo are the leading mobile app development company in the UK, with the best in-class devlopers at hand.

We are a trusted Mobile App development partner 

We are supporting start-ups, scale-ups, and enterprises in their mobile app development endeavours - and they keep coming back!


Who We Have Helped

We built a chatbot app to unlock new growth opportunities for Cleo, a growing FinTech startup.
We delivered an omni-channel experience with applications on mobile, web and and in the London showroom. 
We built a mobile app to enable Admiral Veygo's users to buy short-term car insurance in seconds on the move.


"They harness the agile methodology well, taking a big team and operation and applying it seamlessly."

Test Analyst, Admiral Group

"We’re not managing a couple of contracted developers on loan; we’re working very closely with a tightly-knit team."

Vice President, Leasing Company

"This engagement feels less like a supplier relationship and more like a genuine partnership."

Director of Engineering, Consultancy

"We managed to achieve more than what we were expecting at the start of the project."

Data Scientist, VLSI Research Europe

"I was impressed with how much energy Theodo put into the six-week process."

Director of Corporate Development, Healthcare Provider

"Theodo kicked off our project with little need for onboarding and executed our goals quickly."

Former Product Manager, Hostmaker

“They have excellent communication and always respond promptly to our concerns and questions.”

Executive, Wonderspace

Why Choose Theodo For Your Mobile App Software?

Scoping, building, and deploying a successful mobile application can become a reality for your company—but only if supported by a precisely cultivated mobile app development process and team.



We build top-rated, state-of-the-art native apps for both platforms in record time.
We started developing React Native apps just six months after Facebook first released the technology. We’re so enthusiastic about it that we run the React Native London Meetup.

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Our methodology builds increasing efficiency into the way we work. This means shipping code as early and regularly as possible. This is critical for getting to market quickly, where you will be able to learn and improve based on how your customers use your product.

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Our framework is inspired by Agile, Lean, Scrum and DevOps thinking. It’s not just about technology. We take a holistic approach to deliver solutions tailored to your needs.
With over a decade-long expertise in successfully building software for clients we can help you find the solution that best fits your objectives.

Your Business Is In The Best Hands

Our team is full of future CEOs and CTO.Our experience spans over 10 years, across 8 businesses all part of the M33 group, covering clients globally.

Passionate about new technologies, we use our expertise in mobile app development software and agile thinking to develop solutions that will help you improve your performance, empower your brand, and bring growth. With Theodo you always know your business is in good hands.




We apply best practices of over 500 products in London, Paris, and New York. Expertise and methodology help us develop state-of-the-art native apps in record time.



At Theodo we are visionaries. We are not just a part of the dynamic community of React Native enthusiasts. We were the first to use the framework only 6 months after Facebook’s release. On top of that, we run the UK’s only and Europe’s biggest React Native meetup to share our unique insights and continue improving our services.



We are supporting start-ups, scale-ups, and enterprises in their mobile app development endeavours - and they keep coming back!

Join Theodo for your next Mobile App Development Project

We pride ourselves on building successful digital products, whilst giving our clients an exceptional experience in doing so.

Our experience spans over 10 years, across 8 businesses all part of the M33 group, covering clients globally. We're constantly iterating and advancing on best practice, so you can be assured that your application will be built the right way.

If you are interested in any of our services, please don't hesitate to contact us using our form submission, email us at contact@theodo.co.uk or give us a call on 020 3872 2922.

Get In Touch Today

Technologies we work with