Skip to content

iOS App Development Agency: Guide to Choose the Right One

post image

Selecting the right iOS app development agency is a critical decision that can significantly influence the success of your mobile application. The agency you choose becomes a partner in translating your vision into a tangible product, impacting not only the production process but also the eventual success of the app in a competitive market. 

However, the issue lies in knowing what to look for when vetting an external team. Hence, this article guides you through the essential factors to consider when choosing an iOS app development agency, ensuring your decision aligns with your business goals and the specific needs of your project.

Why Choose iOS for App Development? 

The significance of iOS in the current market is underscored by its substantial presence. As of the third quarter of 2022, the Apple app store housed approximately 1.6 million applications [1], indicating the platform's vast reach and diversity. This figure reflects not only the popularity of the operating system but also the opportunities it presents for developers and businesses.

Furthermore, in the third quarter of 2023, Apple's iOS mobile operating system secured approximately 16.6 per cent of the global smartphone market share, highlighting an uptick from the preceding quarter [2]. This trend aligns with its historical performance, typically capturing a substantial market share and demonstrating its widespread use and popularity. The user base, known for its brand loyalty and higher spending habits, also presents a lucrative opportunity for app developers. 

To this end, by targeting the iOS market, programmers can access a broad audience that values quality and is willing to invest in good apps. This reach is especially beneficial for apps targeting premium services and products, aligning with the purchasing habits of the user demographic.

Advantages of Developing Apps for iOS

Understanding these benefits is pivotal for developers and businesses aiming to make a significant impact in the mobile app market.



Loyal User Base

Apple users often show high brand loyalty, providing a consistent and engaged audience for iOS apps.

Quality Assurance

Strict review guidelines ensure that only high-quality applications are available, enhancing your app's credibility and perceived value.

Better User Experience (UX)

iOS's advanced features and consistent operating system across devices offer a seamless UX, allowing apps to perform consistently across different devices.

High Revenue Potential

iOS users are more likely to pay for apps and make in-app purchases, leading to higher revenue potential for developers.


Robust safety features protect users from data breaches and malware, making iOS a preferred platform for applications handling sensitive data.

Developer Support and Resources

Extensive resources and support are available, including comprehensive documentation, developer tools, and community forums, aiding both new and experienced programmers in creating and maintaining their apps.

What Is an iOS Developer?

An iOS developer specialises in creating applications for devices that operate on Apple's iOS platform. This programmer is skilled in either Objective-C or Swift programming and deeply understands the various patterns and practices unique to the operating system.

Key Responsibilities of an iOS Developer

Here are some of the everyday tasks of an iOS programmer:

  • Designing and Building Applications: The developer is tasked with designing and developing apps for various iOS gadgets. This involves conceptualising the layouts, implementing standards, and ensuring the application is responsive and user-friendly.
  • Integration of User Interface (UI) and User Experience (UX) Designs: They must integrate UI/UX designs into applications, ensuring the app is aesthetically pleasing, intuitive, and easy to navigate for users.
  • Application Maintenance and Updates: Post-launch, the developer is responsible for maintaining the application, which includes fixing bugs, improving performance, and updating to comply with the latest features.
  • Ensuring Quality and Performance: To make sure the app runs as intended, the programmer must test the app for usability, consistency, and reliability.
  • Collaboration with Cross-Functional Teams: iOS experts often work closely with other team members, including designers, software engineers, and product managers, to ensure the app aligns with the company's vision and user needs.
  • Deployment: They handle the deployment of the application to the store, which includes meeting submission guidelines, preparing metadata, and managing release versions.
  • Security and Data Protection: The programmers ensure safety, particularly in handling user data. This involves implementing appropriate encryption and data protection methods.
  • Performance Monitoring and Analytics: They monitor performance using analytics tools to gather user feedback and usage data, which guides future updates and improvements.

Where to Find iOS Developers?

When considering where to find developers, the choice often boils down to hiring freelancers or partnering with an agency. While both options have their merits, the latter often presents a more comprehensive solution, especially for complex projects. 



iOS App Development Agency


Individual expertise can be limited to specific areas.

Access to a team with a wide range of expertise, including UI/UX design, coding, QA, and project management.


Typically more affordable with negotiable rates.

Initially higher investment but offers value for money with comprehensive services.


Varies and is dependent on individual commitment.

High reliability with established processes and contractual obligations.


Scaling requires coordinating multiple freelancers.

Seamless scalability with a ready team to accommodate project expansion.

Project Management

Clients often need to play an active role in management.

Professional project management ensures efficient and timely delivery.


Direct but sometimes inconsistent communication.

Regular, structured communication and updates through dedicated channels.

Long-Term Support

Continuity and long-term support can be uncertain.

Continuous support, maintenance, and updates as part of ongoing services.

Time to Market

Suitable for short-term, smaller projects.

Efficient handling of complex projects with faster turnaround due to more resources.

Industry Experience

Experience varies and is often limited to individual projects.

Extensive industry experience, often with a portfolio of diverse projects.

Choosing an iOS App Development Agency: 8 Key Steps

Here are key steps to guide you through this important decision-making process:

1. Search for an iOS App Development Agency 

Beginning your search involves a strategic approach to align with your specific needs. You can utilise online platforms such as Clutch or GoodFirms, which are rich resources for company listings and client reviews. These sites offer comprehensive insights into each agency’s expertise, past projects, and client feedback, aiding in assessing their compatibility with your project. 

Additionally, tapping into your professional network for recommendations can be invaluable. Often, referrals based on firsthand experiences lead to trustworthy hires. Participating in industry events and tech meetups is also a wise strategy, as these forums provide opportunities for direct engagement with potential companies. 

2. Check Reviews and References 

Evaluating references and reviews is another critical step in the selection process. Start by examining testimonials and case studies on the firm's website, which can provide insights into their work quality and client satisfaction. Additionally, explore independent review sites like Trustpilot, where unbiased feedback offers a broader perspective on the company's performance and reliability. 

Don't hesitate to request direct references from the team and follow up with their past or current clients. This direct communication can reveal working style, adherence to deadlines, and ability to handle challenges, providing a clearer picture of what to expect from the partnership.

3. Industry Expertise and Experience 

Selecting a team with relevant industry expertise is crucial for the success of your project. Firms with experience in your specific sector bring a deeper understanding of the market dynamics, user expectations, and regulatory requirements. This expertise ensures that the company can effectively translate your business objectives into a functional and impactful app, aligning with industry trends and customer needs, thus enhancing the potential for success in a competitive market.

4. Consider the Range of Services

This table outlines the comprehensive approach taken by full-cycle app development firms, highlighting the importance of each phase in ensuring the successful launch and sustainability of an iOS app.



Planning and Designing

Focusing on creating a user-friendly interface and engaging user experience, laying out the app's structure and features.


Bringing the conceptualised design to life through programming and development, utilising the team's technical expertise.


Conducting rigorous tests to ensure the app is free from bugs and meets all functional requirements.


Deploying the app to the appropriate platform and ensuring it's available for users.

Post-Launch Support

Providing continuous support to handle any issues that arise after launch, including updates to ensure the app remains relevant and functional in the ever-evolving tech landscape.

5. Consider Technical Skills 

When selecting an external team to develop your iOS application, assessing their technical competencies across various aspects is essential. This ensures they have the necessary skills to deliver a high-quality software product. 

Technical Aspect


Familiarity with Swift and Objective-C

Evaluate the team's proficiency in Swift and Objective-C and evaluate their experience in using these languages for creating robust and efficient applications.

Experience in UI/UX Design Specific to iOS

Assess their capability in designing intuitive and engaging user interfaces and experiences tailored for Apple devices. This includes understanding design principles and creating layouts that enhance user interaction.

Proficiency in API Development and Integration

Check their skills in creating and integrating APIs, which is essential for enabling your app to communicate with other services and databases effectively.

App Store Deployment and Optimisation 

The team should demonstrate experience in successfully deploying apps to the store, including meeting Apple’s guidelines and optimising the application for better visibility.

Adherence to Security Standards

The firm should have a strong understanding of security features and best practices to protect user data and ensure app integrity.

Testing and Quality Assurance

The agency should be able to conduct rigorous testing and quality assurance processes to identify and fix bugs, improve performance, and guarantee the app’s stability across different devices.

Continuous Integration and Deployment (CI/CD) Practices

Check their proficiency in CI/CD practices for efficient and automated testing, building, and app deployment, facilitating quicker releases and updates.

6. Understand the Team: Conduct Interviews

A thorough understanding of the squad is pivotal in ensuring they are the right fit for your project. This involves conducting detailed interviews and evaluations. You can start by requesting information about the team structure. This will give you an idea of who will be directly involved in your project, their roles, and experience. 

Furthermore, during interviews, asking specific questions to gauge their expertise and compatibility with your task is beneficial. Some pertinent questions might include:

  1. Can you detail your experience with iOS app development, particularly concerning projects similar to ours?
  2. Could you provide an example of a significant issue you faced in a previous project and how you overcame it?
  3. What are your preferred tools and technologies for iOS development, and why?
  4. How do you typically communicate and collaborate with clients during a project?
  5. How do you deal with changes or unexpected issues that arise during the development process?

Evaluating their responses gives you insight into their technical capabilities, problem-solving skills, and communication style. It's also important to assess their enthusiasm for your assignment and whether they understand and align with your vision.

7. Request for Proposal (RFP) and Estimates

Drafting a Request for Proposal (RFP) is a key step in obtaining accurate estimates from the company. An RFP should clearly outline the objectives, scope, and specific requirements. This clarity enables your chosen team to provide precise and detailed proposals, reflecting a true understanding of your needs. 

Begin by detailing the project background and your business objectives, offering context to potential agencies. Specify the technical requirements, desired features, and functionalities of the iOS app. Include any preferences for programming languages, tools, or frameworks, and mention any integration needs with existing systems. 

It’s also important to outline the timeline, including key milestones and desired completion dates. This will allow the external team to assess their ability to meet your schedule without missing the deadline. If possible, provide a range or a ceiling in terms of budget. This transparency lets the company tailor its solutions to your financial constraints and propose cost-effective strategies.

When you receive proposals, evaluate them not just on cost but also on the value they offer. Consider the approach to your assignment, the suggested solutions, and their track record in delivering similar projects. Accurate estimates should also encompass post-launch support and maintenance, ensuring a comprehensive understanding of the total investment required for your task.

8. Sign a Contract and NDA

Finalising your choice of an iOS development agency culminates in signing a contract and a Non-Disclosure Agreement (NDA). The agreement should clearly spell out the deliverables, project duration, payment terms, and any other distinct requirements pertinent to your project. It's vital to make certain that the contract is comprehensive and leaves no room for ambiguity, thereby safeguarding both parties' interests.

An NDA is equally important, especially in the early stages of development when sensitive ideas and data are shared. It legally binds the external development team to confidentiality, ensuring that your app concept and any proprietary information remain secure. 

Additionally, before finalising everything, it's advisable to have a legal expert review these documents before signing. This ensures that your rights are protected and that you fully understand the terms and conditions to which you're agreeing.

Hire Talented Professionals From the Best iOS App Development Agency

If you're in search of seasoned iOS developers or wish to engage a dedicated development team proficient in various tech stacks, Deazy stands as an optimal choice. We offer comprehensive software development services and consultancy to a worldwide client base, including VC-backed scale-ups and some of the largest organisations in Europe.

At Deazy, we have a vast network of tech professionals forming our robust ecosystem. This network enables us to assemble a team of software programmers, quality assurance specialists, project managers, software testers, and DevOps engineers – essentially, the full spectrum of expertise required to develop a functional software product for your business.

Here are some of the benefits of hiring iOS developers from us:

  • Qualified Talents: We implement a rigorous screening procedure encompassing technical, compatibility, and security evaluations, ensuring the highest quality in our talent pool.
  • Flexible Engagement Models: Our service models are designed to cater to your unique requirements. Whether you need project-based hiring, augmentation of your current team with our skilled remote developers, or the formation of a dedicated development squad for ongoing collaboration, we have the flexibility to meet your needs.
  • Managed Teams: We assume complete responsibility for the successful delivery of your project. Our in-house delivery managers oversee each project, guaranteeing that it meets your specifications and aligns with your objectives.

In addition, our programmers typically work on a three-, six-, or 12-month basis, making it easier for you to engage them for short or long-term projects. So, are you ready to build an iOS app for your business? Contact us and outsource iOS app development to the best team today.


Selecting the right iOS app development agency is a pivotal decision that demands careful consideration. Key factors include assessing the company's technical expertise, particularly in iOS-specific programming languages, and their track record in delivering quality applications. Also, the importance of scrutinising client reviews and seeking referrals cannot be overstated, as these provide invaluable insights into the firm's reliability and effectiveness. 

Additionally, it is crucial to understand the iOS app development agency’s approach to project management, communication, and long-term support. Armed with this guide, you are well-equipped to make an informed decision. 

And why not take the next step confidently, knowing that the right partnership can transform your app concept into a successful and impactful iOS application? Get in touch with Deazy today and let us guide you through a seamless and personalised iOS app development journey, tailored to meet your unique needs and aspirations.


Where is the best place to outsource app development?

The best place to outsource often depends on your project's specific needs, budget, and desired expertise. Countries like India, Ukraine, and Poland are popular due to their balance of cost-effectiveness and high-quality talent pools. However, it's crucial to consider factors like time zone differences, language barriers, and cultural alignment when making your decision.

Should I outsource my app development project?

Outsourcing can be beneficial if you lack in-house expertise or want to reduce costs. It allows access to a global talent pool and can expedite development. Start by assessing your project's complexity, budget constraints, and specific skill requirements to determine if outsourcing is the right strategy for you.

How do you find the best outsourcing company for mobile app development?

Finding the best outsourcing firm for mobile app development requires thorough research. Begin by defining your project requirements and budget. Look for a team with strong portfolios and positive client reviews. It's also advisable to request case studies or references to better understand their approach and success in similar projects.