Mobile App Development Services

Since 2014 our international development company has developed awesome mobile apps for App Store and Google Play. Get successful products that delight millions with our mobile app development services!

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Client testimonials

«We now have a core team of engineers at Relevant who work for us full-time and are supplemented by 4 or 5 engineers with different skillsets when and if required.»

Paul Carse
CTO and Co-founder of Life Moments

“Working with you guys has been fantastic. The level of expertise of your development team is as good as the people that we get in the UK. You’ve got a fantastic talent base of programmers. It’s more challenging to find people of that quality in the UK.”

Cassian Harrison
Co-founder of Splink Industries and My Theory Test App by James May
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Key mobile app development services you’ll get

Android Applications Development

We develop Android apps using Kotlin or Java via Google’s development tools and guidelines. Unleash the full potential of Google's platform to deliver your product to 2 billion Android users worldwide!

iOS Application Development

Our iOS development team offers a full spectrum of services for different domains and devices, including iPhone, iPad, Apple Watch, App Clips, and Apple TV development. Make your business ideas thrive with our iOS app development company.

Cross-platform Application Development

We build cross-platform apps that run on iOS and Android through a single code base to expand your reach, decrease risks and maximize velocity. Utilize the best features of each ecosystem while delivering a consistent mobile experience across all devices.

Application Design and Modernization

We create exceptional apps with attractive design, intuitive interface, and user-friendly experience. Also, our mobile developers can improve performance and bandwidth, update UX/UI, and add new features to existing mobile apps. Concentrate on your business while we process reliable mobile app development!

Other mobile app development services we provide:
  • • Mobile Server-Side Development
  • • Native and PWA solutions
  • • Mobile App Porting
  • • UI/UX App Design
  • • Consulting and Prototyping
  • • Automated QA and Testing
  • • Custom Mobile App Development
  • • Embedded Android & AOSP Customizations
  • • Augmented Reality for Mobile Development
  • • Maintenance and Post-Warranty Support
  • • Wearable App Development
  • • HTML5 Mobile Development
  • • Architectural Solutions for Mobile Apps

Our tech stack

React.js and React Native
Google Cloud


Google Cloud
Microsoft Azure
IBM cloud

Why Relevant for Mobile App Development?


Rich talent pool

Our mobile app development company has senior-level engineers and designers with a comprehensive tech stack to make any of your ideas come alive.


Efficient resource management

When you reach out to us for mobile app development services, we develop the optimal solution according to your business goals and budget.


Agile approach

We follow agile best practices and use the latest technology to continuously improve the product, reduce time to market and achieve the highest quality standards.


Scalable products

Leaving space for improvement is essential when it comes to application development. Our mobile app development company helps you create products that are easy to scale and maintain.


Unique visual design

What can grab users' focus better than an attractive user interface? We create apps with the UI/UX best practices to outpace your competitors.


Dedicated project manager

Our dedicated project manager will be a perfect mediator between our developers and you. Your ideas will be precisely handled to become a decent piece of software.

Our clients’ successes

My Theory Test app by James May
Building #1 driving app in the UK
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Facilitating the ordering of custom prostheses and orthotics
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Improving a restaurant booking system
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Engagement models

Decide which model best suits your project


Why Relevant?

Looking for a trusted provider to build a mobile application and grow your business? Congratulations, as you have already found it.

First, our company is trusted by clients from 25 countries worldwide. Satisfied with our mobile app development services, they come back to us with new ideas to grow their business.

Next, our deep niche analysis and extensive technical skills allow us to create feature-rich products with amazing designs.

Finally, our engagement models will enable us to develop software at reasonable prices, pre-negotiated and discussed with the client.

What size companies do you work with?

We build amazing software for innovative start-ups, fast-growing enterprises, and Fortune 100 companies.

Do we sign an NDA document for my mobile app development project?

Yes, we do. As a mobile app development company, we always sign an NDA to safeguard your business's private data, project details, and intellectual property. Protecting clients' privacy and their trade secrets is our top priority.

How do I track the progress of my project?

We use Jira and Slack to track tasks and development progress in mobile app development and other IT outsourcing services.

Can you also design my app?

Yes, we are a full-cycle design and development company. We apply a design-driven approach to building modern mobile apps and websites. Our team has a strong pool of design and development professionals.

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Do you know that we helped 200+ companies build web/mobile apps and scale dev teams?

Let's talk about your engineering needs.

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