Custom iOS App Development Services

At Onix, our iOS application development services focus on building products that support real business outcomes — user acquisition, retention, and efficient operations. Each solution is designed with a clear purpose: to perform reliably in the market and create long-term value for your business.

We work with both startups and established companies, helping launch new products, improve existing applications, and scale platforms as demand grows. Our approach ensures that every stage of development is aligned with your product strategy and growth plans.

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    iPads are widely used for operational tasks, analytics, and internal systems. Our iPad application development services focus on building applications that support productivity, simplify workflows, and provide clear access to data in real time.

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    The iPhone often serves as the primary interaction point between your product and your users. Through our iPhone app development services and iPhone mobile app development services, we create applications that support smooth onboarding, intuitive navigation, and reliable performance.

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    Our offshore wearable app-making service supports quick interactions, notifications, and real-time data delivery. These applications extend your product into everyday user routines.

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    We develop Apple TV applications for content platforms and digital ecosystems, ensuring smooth interaction and stable performance across devices.

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iOS App Development Services We Provide

We offer a full range of iOS app development services covering every stage of product development — from early planning to long-term support.

iOS Development Consulting

01

We help you define the right approach before development starts — from product scope and architecture to technology choices. This ensures your app is built on solid foundations and aligned with your business goals.

iOS Native Development

02

We build native iOS applications using Swift and Apple frameworks to deliver reliable performance, smooth interactions, and full use of device capabilities.

Third-Party Integrations

03

We connect your app with external systems such as payment providers, analytics tools, and business platforms, ensuring stable data flow and a seamless user experience.

QA & Testing

04

We run structured testing across functionality, performance, and security to make sure your app works reliably in real-world conditions before release.

Maintenance & Support

05

We support your app after launch with updates, monitoring, and improvements, helping it stay stable, secure, and aligned with user expectations.

App Store Optimization

06

We improve your app’s visibility and conversion in the App Store through keyword optimization, listing improvements, and performance tracking.

UI/UX Design

07

We design user interfaces that are clear, intuitive, and easy to navigate, supporting user engagement and long-term retention.

Cross-Platform Development

08

We extend your product to additional platforms when needed, ensuring consistent functionality and a unified user experience across devices.

Set your budget and we will optimally adjust software development to it!

Results speak louder than words; let’s look at Onix in numbers

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Years of experience in
software development

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Successful app
releases every year

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Successfully delivered
projects

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Talented multi‑dimensional
experts

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Product Discovery Is the First Stage of Any iOS Development Services

With over 20 years of experience in offshore iOS development, we understand how to turn ideas into scalable products. Product Discovery helps define the right direction early, ensuring your project moves forward with clarity, realistic timelines, and controlled costs. This stage creates a strong foundation for successful product delivery and market launch.

Clear product goals and a structured development direction

Architecture, solutions, and user experience aligned with your business objectives

A deep understanding of your product concept, target market, and audience

Early identification of risks and a plan to address them

Efficient use of resources and better cost control

Stronger positioning for investor discussions and funding opportunities

“They always went above and beyond and really viewed themselves as an extension of our company's team.”

CEO of Bracketology,
Jonah Fialkow

“Working with Onix has made it so easy for us to develop the software products. They mobilized a highly skilled team that handled tasks with extreme proficiency. Onix made this such an enjoyable project to work close to. ”

Founder & CPO of Phlex
Ryan Rosenbaum

"We are impressed with their professionalism and transparency in their work.”

CEO, MiPaddle
Mark Innes

Their outstanding ability to solve extreme technical challenges distinguishes them from their competitors.”

CEO, messageLOUD
Garin Toren

”Onix-Systems is extremely reliable, hard-working, and intelligent.”

CEO, ROI Genius
Andrew Cramer

“We've had a fantastic experience working with the team at Onix. They've delivered the vision we had for our platform. Communication has been great, they go the extra mile to make sure work is done to a high standard and delivered on time. It's been a pleasure to have them on board highly recommend them.”

CEO,
Sukh Sidhu

Solutions We Deliver for iOS

The iOS was originally designed to power Apple's iPhone series. Today, it powers all of Apple's mobile devices, including the iPad.

The rising popularity of mobile computing has resulted in a boom in iOS app development. There are several native technologies in the iOS ecosystem.

Onix can successfully build the best map and geolocation tools into its apps to ensure that smartphone users always receive precise information about their current location and itinerary.
Onix can link iOS apps to external hardware such as GoPro cameras, Apple watches, certain home appliances, and more. We use iBeacon, printing, Bluetooth, HomeKit, Wi-Fi, and WatchKit.
Onix simplifies a user's interaction within the app interface by utilizing data processing technology tools. For example, sharing data between apps allows the app to use data from another app or provide needed data to it.

Onix uses these tools to allow programmers to test their programs in real-time before the grand release, ensuring top quality. These pre-tests are extremely important, as they show developers what people think of the applications.

  • Crashlytics Beta

  • HockeyApp

  • TestFlight

  • BetaBuilder

Onix improves an app's usability, making apps even more enticing to a user. These allow users to interact with their contacts and build connections in programs such as iMessage, Mail, Twitter, Facebook, LinkedIn, Instagram, etc.

By using these analytic tools, Onix’s developers can evaluate the effective use of chosen technologies for app development and design solutions. This makes it possible to easily analyze user activities in the app and help bring in new targeted user audiences.

  • Flurry

  • Google Analytics

  • Crashlytics

Onix guarantees that the technology solutions we apply simplify issues and eliminate costs associated with integrating SMS and MMS services. We use P2P, Sockets, APNS, Push Notifications, StoreKit, RSS, and Networking Frameworks to stay up-to-date on their programs.
Onix recognizes that the presentation of text and media is a critical element of most iOS apps and uses these tools to facilitate customization of an app's media layer.We use Media Accessibility Framework, Accelerate Framework, Assets Library, Image I/O, Photos Framework, Text Kit, and Core Kit.

Onix uses these practical tools in managing videos in iOS:

  • Media Player

  • UIImagePickerController

  • Core Media

  • AV Foundation

  • RTMP

  • RTSP

  • HLS

  • AirPlay

Onix relies on adaptive data analysis tools, allowing programmers to store and view data collected from applications used in real-time.For this, we use CoreData, Keychain, Parse SDK, Magical Record, User Defaults, SQLite, XML, Plist, HTML5 Client-Side Storage in Safari, and Key Archiving.
Onix's expertise in multiple payment systems helps clients propose the best solutions to their applications. StoreKit is used for digital content and helps monetize any product for clients who want to sell hard or soft goods; PayPal and Stripe's integration works well everywhere.
Graphics is one of the first things that attract people to an app. Onix integrated graphics tools that make it possible to support apps with 2D and 3D digital content.We can also add supporting device features, such as a library of users' photos, battery life details, or remote control. Here are short descriptions of the tools commonly used in the iOS development of graphics.
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Start building your impactful mobile solution for iOS.

Why Onix Is The Best Technology Partner for iOS App Development

Choosing the right partner for iOS application development services defines how your product evolves — from first release to long-term growth. As an offshore iOS application development company, Onix supports companies at different stages, from startup MVPs to enterprise platforms, delivering reliable and scalable solutions through structured processes and experienced teams.

Fast and cost-effective development

Our offshore iPhone app development approach helps you manage development costs while maintaining consistent delivery quality. With our iPhone app development services and ios app development services, you get a balanced combination of speed, technical expertise, and efficient resource planning. All solutions are delivered with full ownership of intellectual property.

Industry-Leading Quality

Our iOS development services follow established engineering standards, ensuring stability, strong performance, and secure architecture. Each iPhone application development service is built with attention to detail, covering usability, backend reliability, and long-term maintainability. This allows your product to support real usage and scale with demand.

Openness and transparency

Working with an offshore iOS development company requires clear communication and visibility. We provide structured reporting, transparent workflows, and detailed tracking of progress, so you always understand how your product is evolving.

Increased Flexibility

You can hire offshore iOS developers based on your current needs — whether you require a dedicated team or additional expertise for specific stages. Our engagement models allow you to adjust team size and focus without disrupting development flow.

Improved Time Management

Our iPhone mobile app development services are designed to support efficient execution, allowing your internal teams to focus on strategy and growth. By working with an offshore iOS application development company, you reduce operational overhead while maintaining control over product development and delivery timelines.

Industry-Specific iOS Development

iOS applications support core business processes across industries — from customer experience to operations and data management. Our custom ios app development services help companies build products that support growth, efficiency, and long-term scalability.
Here are the key industries we work with:

  • Retail

    Creating custom shopping experiences and integrating payment systems.

  • Entertainment

    Building loyalty with programs and engaging users with entertaining apps.

  • Healthcare

    Collecting and analyzing patient data to create personalized health plans.

  • Education

    Developing collaborative tools and creating virtual learning platforms.

  • Finance

    Streamlining banking procedures for customers and improving money management.

  • Transportation

    Enhancing customer service, providing real-time tracking options, and integrating payment methods.

  • Insurance

    Automating processes for agents, streamlining paperwork, and improving customer service

  • Travel

    Improving the booking experience by offering discounts, adding features, and optimizing the checkout process.

[ Our Development Process ]

Here is what our custom
iOS app development process looks like:

    • ﹂ Business goals analysis

    • ﹂ Creating a project’s roadmap

    • ﹂ Determining the strategy

    • ﹂ Planning and scheduling

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    • ﹂ Generating ideas and concepts

    • ﹂ Lean Inception

    • ﹂ Choosing a development methodology

    • ﹂ Selecting a team

    • ﹂ Conducting the project's audit

    • ﹂ Developing a user journey

    • ﹂ Planning features development

    • ﹂ Preparing a timeline

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    • ﹂ Creating prototypes

    • ﹂ Facilitating the workflows

    • ﹂ Managing complex data

    • ﹂ Meeting end-users' needs

    • ﹂ Creating user flow

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    • ﹂ Ensuring transparency in accordance with the Agile approach

    • ﹂ Delivering software based on iteration requirements

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    • ﹂ Defining quality goals

    • ﹂ Preparing a list of steps to take to provide your end customers with the best experience

    • ﹂ Conducting QA testing

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    • ﹂ Preparing the final iteration for product release

    • ﹂ Release to production

    • ﹂ Product upgrade based on real users’ feedback, app performance, and changing market requirements

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Onix Engagement Models

Our custom iOS development services presuppose two engagement models depending on your business goals: dedicated team and staff augmentation.

Dedicated team

Dedicated software development teams refer to hiring a fully dedicated set of developers assigned exclusively to your business initiatives for the long term. Dedicated teams ensure faster turnaround times and better communication between you and the development team.

Staff augmentation

With this option, clients can hire additional expert personnel for short-term projects or during peak periods of activity to supplement their internal teams. Dedicated Onix specialists will join existing teams to ensure deadlines and requirements are met while also providing expertise in specific areas.

[ Our clients ]

Brands We Have Worked With

Technologies We Use at Onix

To deliver products of the highest quality, we use a reliable and top-notch set of technologies.

Backend development

Python,

Node.js,

Java,

PHP

Frontend development

React.js,

Vue.js,

CSS,

HTML5

Mobile development

Kotlin,

Flutter,

Swift,

Objective-C,

React Native

CMS

Shopify,

WordPress

VR/AR and 3D design

Unity,

Visual Studio,

Blender,

Maya,

Houdini,

V-Ray

Cloud storage

AWS,

Azure,

Google Cloud Platform,

Heroku,

DigitalOcean

Our iOS Development Cases

Onix delivers ios application development services backed by real product experience across industries and use cases.

Our team combines strong engineering with practical product thinking to build applications that perform reliably and scale with business growth.

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USA

Gaming

Bracketology is a platform for reality
TV, turning its drama into
an online game

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USA

Sports & Fitness

Phlex is a swim-tracking app that uses
wearable devices to collect motion data

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USA

Sports & Fitness

JSA is a platform that offers
personalized training and nutrition
services

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Explore our works

Click here to immerse yourself in a world of exceptional web design. Our portfolio awaits, showcasing our finest works.

View case studies
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Ready to build an iOS app that users keep coming back to? Start with a clear plan and a team that knows how to deliver.

Our Insights

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Looking to Hire an iOS Development Team?

FAQ

Look for a partner with proven experience in iOS application development services, clear delivery processes, and strong technical expertise. A reliable team should understand both product development and business goals, not just coding.

A scalable approach requires solid architecture, cloud expertise, and experience with growing products. An offshore iOS development company with a track record in complex systems can deliver iOS app development services that support long-term growth.

You can hire offshore iOS developers from companies that provide custom ios app development services with transparent workflows, dedicated teams, and real case studies across industries.

Full-cycle providers offer iOS development services that include maintenance, optimization, and updates after launch. This ensures your application stays stable, secure, and aligned with user expectations.

The cost of iOS app development service depends on product complexity, integrations, and team size. MVPs require smaller budgets, while enterprise solutions involve more advanced architecture and longer timelines.

Teams with experience in iPhone app development services and payment integrations are best suited for e-commerce. They understand conversion flows, performance requirements, and scalability for high user traffic.

Choose a company that offers iPhone application development services with strong product discovery and MVP delivery experience. This ensures fast validation and efficient use of resources.

Review technical expertise, past projects, communication processes, and ability to deliver full-cycle iPhone app development services. Clear documentation and structured workflows are also important.

Many providers include ASO within iOS app development services. This typically covers keyword optimization, app listing improvements, and performance tracking to increase visibility and downloads.