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Our iOS app development services

Custom iOS app development

Hire iOS developers at Altoros to build functional and performant systems that get featured in the App Store, receive positive feedback from users, and drive engagement for your business.

UX/UI design

With iOS app development services at Altoros, companies get an intuitive, easy-to-navigate user interface that combines attractive visual design with excellent usability and responsiveness. Our experts will also enable your application to work well with a range of screen sizes and devices (iPhone, iPad, or even a smart TV).

Migration and modernization

Hire dedicated iOS app developers at Altoros to seamlessly migrate your solution from a different operating system (OS), as well as eliminate any unexpected issues that might arise later on.

Integration with third-party systems

We offer iOS application development services to help companies add such features as payments, interactive maps, social media sharing, etc., to their custom software by integrating it with third party systems and services.


As part of our custom iOS app development services, we will review your product, identify bottlenecks, outline opportunities for improvement, and deliver an optimization plan. The experts at Altoros will also recommend best practices to ensure stable performance and reliability.

Maintenance and support

In addition to iOS application development services, we provide 24/7 maintenance, support, and effective troubleshooting across all levels (infrastructure, platform, etc.).

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Our expertise

Hire iOS developers to extend your in-house talent

Whether you are looking for short-term assistance or a long-term development project, we will find experts that best match your business goals.

A zero-risk 2-week trial period

Pay only if you are satisfied with our work

Middle iOS Developer
Professional skills

Languages: Objective-C, Swift

Frameworks: UIkit, Core Graphics, Core Data, Core Location, Core Image, AFNetworking, Core Motion

3+ Years of experience
Senior iOS Developer
Professional skills

Languages: Objective-C, Swift

Frameworks: AppKit, Foundation, UIkit

Libraries: BonMot, Toast-Swift, SwiftLint, Firebase Crashlytics

7+ Years of experience
iOS Team Lead
Professional skills

Languages: Swift

Frameworks: iOS SDK

Tools: Core Location, MapKit, Realm, Core Data, CoreBluetooth

Databases: Firebase, SQLite, Realm, Core Data

8+ Years of experience

Why hire iOS application developers at Altoros?

We have a vast portfolio of 1,400+ successfully delivered projects across different domains. Our team has the necessary skills to handle iOS development projects of any complexity.

Hire iOS developers within 72 hours. We accelerate the onboarding process thanks to extensive experience in media, telecommunication, logistics, finance, oil and gas, real estate, as well as other industries.

100% transparency. We track each engineer’s contribution into the project and give you full access to view the source code, ensuring that the delivered results meet customer expectations.

56% of our new projects come by referral from existing customers, demonstrating high satisfaction with our services.

Our customers speak

Since the company's foundation in 2001, Altoros has gone a long way to build a team of full-stack developers with solid technology expertise that has received a lot of positive customer testimonials.

Our customer satisfaction rate is95%according to our NPS surveys held on a 3-month basis. Learn more about our customers.




“I would definitely recommend Altoros for software development projects. It has been a pleasure working with them. There is a huge commitment from the team. The code quality and communication are top-notch. Absolutely would recommend hiring Altoros for software needs.”

Landon Swan, Co-founder of Likefolio




“The remit of the Altoros ops folks is to locate and stabilize a malfunctioning service and report it to the engineering team. If they can't stabilize it, they have permission to wake us up, but that's only happened once.”

Laurie Voss, Cofounder and COO at npm



Doubled our customer base and rolled out several new product lines

“In collaboration with our in-house team, our Altoros contractors swiftly identified and articulated critical paths against our roadmap. Altoros contractors were able to dive in from day one and meaningfully contribute to our engineering organization.”

Alex Scott, Co-founder at Revere

Want to know the cost of iOS app development services?
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Why build an iOS app for your business?

The operating system does not require extremely powerful hardware to operate smoothly and responsively, ensuring stable performance and outstanding user experience across the full range of supported devices. Utilizing Swift and Xcode, Apple’s mobile OS facilitates the development of reliable, easy-to-maintain software.

Hire iOS developers at Altoros to build a custom app from the ground up or migrate an existing solution to any of the operating systems by Apple (e.g., iPadOS, tvOS, watchOS).

Frequently asked questions

  • What benefits can Altoros deliver to my business through iOS app development services?

    Altoros can deliver a custom, high-quality iOS app that is tailored to your business needs and goals. We can help you create a seamless user experience that engages your customers and improves your brand recognition. Our iOS apps are developed with cutting-edge technologies and are optimized for performance and security.

  • What tech stack does Altoros use for iOS app development?

    We use a variety of technologies and tools to develop iOS apps, including Swift, Objective-C, Xcode, Cocoa Touch, and other frameworks and libraries. Our team of experienced iOS developers stay up-to-date with the latest trends and updates in the iOS ecosystem to deliver the best solutions to our clients.

  • Why does my business need Altoros to improve its operations through iOS app development services?

    An iOS app can help your business reach a wider audience and improve customer engagement. With a custom iOS app, you can provide your customers with an intuitive and seamless user experience that can enhance your brand's reputation and recognition. Additionally, an iOS app can help you streamline your internal processes and improve your team's productivity.

  • What language is best for iOS app development?

    Four languages are prominent in iOS development:

    • Swift: Apple's programming language for building native apps in the Apple ecosystem with modern features, stability, performance, and scalability.
    • Objective-C: An object-oriented programming language with dynamic typing and stability, but it's used less in favour of Swift due to its large codebase and legacy projects.
    • JavaScript: A universal language that allows multiplatform app development and provides rich user interfaces for good user experience, with a vast community and tools.
    • Dart: A cross-platform language for mobile app development, allowing for the creation of apps for multiple operating systems with a single codebase, popular for its rich libraries and fast testing using Flutter.
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Alex Tsimashenka
Business Development Director
+1 (650) 419-3379