iOS App Development Services

We deliver iOS apps keeping in mind both the business side and the end-users. Hire iOS software developers now.

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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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iOS app development services we provide

iOS Development Consulting

Tell us about your rough app idea and receive expert guidance on iPhone, iPad, tvOS, or watchOS app development.

Custom iOS App Development

As a full-service iOS app development company, Relevant can build a customized product that may extend your reach to over a billion Apple product users.

Dedicated iOS App Developers

Relevant is here to build a brand new app from scratch, transform your legacy iOS app into an app of the next generation, or both of the services at once.

iOS App Support and Maintenance

On top of our iOS development services, we offer QA testing and bug fixing, constant monitoring of the app performance, as well as app store support to ensure the smooth functioning of your iOS app.

iOS app development services in detail
  • • APIs for iOS Apps
  • • iPhone App Development
  • • Apple TV App Development
  • • iPad App Development
  • • Apple Watch App Development
  • • iOS App Development for IoT
  • • Migration to iOS App
  • • iOS App UX/UI Design
  • • iOS App Test Automation
  • • iOS App Integration Services
  • • Industry-specific App Development: FinTech, Construction, Healthcare, eCommerce, etc.

Why our iOS development services?


Agile approach

Assemble a team that’s right for you. Add a dedicated specialist, hire an entire team, or go lean—we’ll support your every decision.


Dedicated project manager

With a dedicated project manager, you can keep abreast of the project without having to dig into the processes.


8.9/10 client satisfaction score

Satisfied clients are the fuel that powers our services. For every app we build, we make sure good relationships are built with it.


92% of the company – senior and middle engineers

We invest in attracting the best talent from the market. We hire only strong middle and senior engineers and no juniors.


20% employee turnover rate

We are interested in long-term relationships. Our employees stay with our clients and us for years.


Thinking of the end user

Our thoughtful UX designs and usability practices create experiences that benefit customers.

Our iOS development cases

Developing a SaaS platform that assists UK homebuyers
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Improving a restaurant booking system
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Automating the event check-in process
The Netherlands
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Engagement models

Decide which model best suits your project


How much does it cost to develop an iOS app?

There is no single answer to what is the average costs of IOS app development. The final price will depend on the list of features you would like to include in your application. Before developing an iOS app, you should be sure about such things as your target audience, OS versions, requirements, extra application features, USP feature, and so on.

A significant part of the iOS app development cost is the money you'll pay to iOS developers and other tech professionals. If you want to build an in-house team, these will be the costs related to hiring and onboarding new specialists.

If you prefer to outsource your iOS development project, the price you'll pay will include the hourly rates of iOS programmers plus the iOS software development services provider's fee. When outsourcing is essential to find the proper ratio of quality and costs. In this context, it is highly recommended to outsource development to Eastern Europe (for example, to experienced iOS programmers from Relevant).

Is it difficult to build an iOS app?

Developing native OS apps is not a walk in the park. To make a successful custom iOS app, your iOS team must master Apple's integrated development environment (IDE) and write the program code in one of the relevant programming languages, such as Swift or Objective-C. They need to understand the basic abstraction layers that define iOS and how the application files are bundled.

Another prerequisite of the iOS project's success is an effective user interface of your app that ensures a great user experience on every level. IOS developers often need to have specific knowledge, such as experience with RxSwift, a reactive programming library designed for iOS that makes it easy for software engineers to develop dynamic apps that respond to data changes and user events.

So how to make it all work? The answer is obvious: to hire an experienced iOS services development company.

But how do I choose the right custom iOS app development services provider with so many companies on the market?

True, there are countless iOS development firms out there, making it very difficult to select the right IT company for your projects. Here are a few tips that might help you streamline the provider selection process.

Create a list of business requirements for your project

The first thing you should do when outsourcing your iOS project is prepare a list of business requirements. You can start with the description of the critical problem you want to solve and check it with other stakeholders. Then you can a more detailed document for IT providers by adding technical details to it. This will help them to come up with the proper estimation of time and costs.

Do a thorough research

But how to actually start the iOS provider search? Here are some ideas that might help you:

  • Ask your network for a recommendation
  • Check publications that publish the lists of the best IT services providers
  • Check authoritative platforms like Clutch; they can connect you with several firms that match your project needs
  • Just google it, so you can compare your search results with the options you already have

Before conducting interviews with the potential vendors, make sure you eliminate the non-relevant options. Check companies' websites (do they look professional enough?), case studies (do they have experience in your niche or with similar projects), and reviews (are their clients satisfied with the results). Then narrow your list to several companies, so you can focus on each provider and make the right decision.

Take preliminary interviews seriously

The next step is to reduce your list to about three firms that will send you their proposals. There is one fits all algorithm of how to conduct interviews with potential vendors, but here are a few things you can't overlook.

  • Expertise and approach
    Understand whether your provider has the right abilities to implement the project in the most effective way
  • Communication style
    Do the company representatives communicate clearly, consistently, and honestly? Are they transparent with you? Do they understand the business side of the project, the unique challenges, goals, or risks you have?
  • Cost
    While it plays a vital role for every business collaboration, selecting an IT services provider is way more complicated than finding an affordable offer. Costs actually are a much broader concept that includes the costs of experience and expertise, time savings, the cost of worries about the high price you paid, the cost of collaborating with a firm with a bad reputation, and so on.

So the main idea here is to find the right quality-price ratio and be sure you work with professionals you can trust. Based on these criteria, many businesses choose Ukrainian mobile app development companies with much experience in the IT world and proved to be reliable IT partners to many businesses worldwide.

What are the benefits of IOS app development?

Even though Android holds the largest market share in the end device market (Android runs on around 73% of mobile devices and iOS has a 26% market share), Apple's continued focus on high-quality products has made iOS the number one mobile platform for businesses. iOS apps are beneficial both for B2B and B2C companies, and over 2 million apps in the Apple Store only confirm that statement.

Meanwhile, the number of iPhone switchers keeps growing, so If you want to target the more wealthy iPhone and iPad users who are more likely to make in-app purchases than Android users, you should consider building an iOS App. It will help you reinforce your brand and find new customers and earn higher profits and get back your investments faster. What is the best way to build an iOS app? Hire an experienced iOS app development company like Relevant!

What is an IOS app, and what is iOS app development?

An iOS app is an application created for use on iOS-powered devices. iOS stands for Internetwork Operating System, meaning that the iOS is an operating system, just like Windows or Linux.

Although iOS is very much associated with iPhone, iOS application development services and iPhone app development services are not the same things. Apple's iOS operating system not only serves as an OS for the iPhones but also runs on iPad, Apple Watch, and Apple TV devices. It allows simplifying the development for various devices and bring more value to the users.

Just think of it, when you arrive home from work, the apps that you use throughout the day can continue to be used seamlessly and synchronized on the tablet. Or you can easily view photos from your iPhone on Apple TV and share them with your family.

The iOS app development process may be different depending on the device it is being programmed for. The main distinctions of programming an app for iPhone, iPad, or iPod are the areas of screen size and functions.

If you are programming an iPad app, you have more space available when designing the user interface, as it is the app with an interface design specially created for the iPad. In contrast to iPhone apps, which can also be used on an iPad or iPod, apps developed for the iPad cannot be used on an iPhone or iPod if this has not been specially programmed for this application.

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