Custom mobile app development services

Grow your business with a tailored digital product that sets you well apart from the rest.

Person using a smartphone and laptop simultaneously, representing mobile and web app development solutions for seamless digital experiences.

Which operating system to choose for your custom mobile application?

Why choose one operating system when your customers are on them all? Our developers have the experience, skills, and technology to take whatever idea you have and turn it into a sophisticated extension of your brand.

iOS

Apple is synonymous with performance and aesthetics, making it a top choice for clients seeking to deliver the highest standards of design and UX. Our custom mobile app developers adopt the innovative spirit of Apple to create apps for iPhone, iPad, and other Apple devices.

Our iOS technologies:

  • Swift
  • SwiftUI
  • async/await
  • Combine
  • RxSwift
  • SwiftPM
  • CocoaPods

Android

Android enables high-performance enterprise application development with a wealth of unique features and themes for mobile devices. Our team has built hundreds of user-friendly and responsive Android apps, and can deliver a product that can be used widely across all Android devices.

Our Android technologies:

  • Kotlin
  • Compose
  • Gradle
  • Dagger
  • Coroutines
  • RxJava

Cross-Platform

Why choose native app development when it is so easy to invest your time and resources in creating a custom mobile app that works seamlessly on both iOS and Android? We are proud to be enlisted in Google’s Flutter Consultants Repository, and with our expertise, you can ensure each customer has the same flawless experience with identical features and consistent functionality.

Our cross-platform technologies:

  • Flutter
  • React Native
  • Kotlin Multiplatform

DISCOVER OUR OTHER CUSTOM MOBILE APP DEVELOPMENT SERVICES

Mobile app optimization

Is your brand’s mobile app already being used by your loyal customers? We can help you update your design, remove inefficiencies, and boost its performance to make it more compatible with today’s technologies.  

Code refactoring

If your code is getting in the way of app functionality, we can clean it up to improve its efficiency, readability, and scalability while ensuring it continues to function as intended.

Maintenance & support

We offer ongoing app maintenance and updates to allow it to continue to run smoothly and without errors. 

QA consulting

Our team’s testing strategies and quality control frameworks identify and resolve issues that might be impacting your mobile app’s functionality, performance, or UX.


These companies trust us with their app app development process

Img Philips Left

Our long-standing partnership with Philips and our contribution to high app store ratings highlight our design expertise. Our team’s role in supporting Philips has been crucial in reinforcing its digital presence in the industry.

Img Infobip Left

Our collaboration on the Infobip website and documentation included migrating old content and enhancing the site’s functionality and user experience, with a focus on SEO and performance optimization.

Img Ppro Left

In cooperation with ProductionPro’s team, we built a digital tool for streamlining creative collaboration in film, TV, and theater productions. Today it’s trusted and used by Hollywood’s biggest studios.

Img Vontobel Left

We joined forces with Vontobel’s back-end development team to make an SEO-powered, smooth-running website. As a result of our work, the client saw improvement in speed, reliability, and user engagement.

Img Vns Health Left

Our innovative user research for VNS Health’s Command Center has revolutionized their workflow. The insights and new experience maps we provided have significantly improved their operational processes.

Img A Left

Telecommunications service provider A1 partnered with us to reimagine the customer experience for all their users. Based on mobile, we designed and built a modular product that fully adapts to their needs.

Img Hpb Left

We created a new kind of mobile banking experience for the Croatian Postal Bank, the largest local bank in Croatia. Together we keep innovating, enhancing user experience, and introducing new possibilities for customers.

Img Signify Left

Signify is the market leader and innovator in all things lighting. We created a digital product that harnesses the full power of Signify’s cutting-edge lighting hardware.

WHAT OUR CLIENTS SAY

The team brought how the consumer FEELS front and centre in UX design, and this is something that became ingrained.

RAYMON BATE
SENIOR DIGITAL PRODUCT MANAGER, SITA

Creating a frictionless product is always a challenge, but the team was more than up for it. The final product exceeded all of our expectations and has been used by thousands of our guests. We couldn’t be happier with our choice of partner for this project.

PHILIP WHITNEY
SVP SALES & MARKETING, CIRCLE LINE

How we do custom mobile app development 


01 KNOW

Understand your company’s needs, the direction of travel, and the steps to take to reach your business goals. 


02 PLAN

Based on your needs, we pick out the most appropriate technology stack to use for building your custom mobile app


03 BUILD

Equipped with the right technology, we custom-build your mobile application, breaking and fixing things along the way.


04 RELEASE

Using Agile principles, we streamline the build process to bring your app to market faster than our competitors. 


05 ADAPT

We test your app in the wild to gather real-world data that can help us tweak, improve, and update your digital product.

Why choose Infinum for your custom mobile application development services


digital products shipped

+1,000


Clients worldwide

500


experts on board

400


years in business

20

Our end-to-end app customization services are built around the principles of quality, efficiency, creativity, and collaboration. Here are six other reasons to work with us:

1

Our range of services

We have branched out our services and skill sets quite substantially over the last two decades in order to give our clients the full scope of digital services—from strategy to maintenance. 

2

We are proactive collaborators

Knowledge and wisdom are meant to be shared–that’s the best part about collaborating with our clients. We proactively use our broad experience and technical knowledge to reach your business goals.

3

We are highly rated by our clients

Our clients have provided generous feedback about the quality of our digital products and our style of collaboration. 

4

We get you there faster

Our Agile approach to app development means we can deliver an MVP in a matter of months. Then, in post-launch, we’ll keep a close eye on your app’s performance to prepare for future upgrades and added features.

5

We take security seriously

Building a secure app takes priority–your business needs not only an innovative app that optimizes procedures and enhances UX, but also a secure app that can manage important data without fear of leaks.

6

We make you feel heard

We make sure our clients are in step with every decision we make, which many say makes them feel heard and cared for. We have tons of diverse talent packed under one roof, which helps us provide expert advice and support at any stage of a custom development project.

What you can expect from our custom mobile development services 

1

Competitive edge

We empower businesses to become household names in their industry with unique customized apps that set the standard high.

2

Cost-effectiveness

Because of our experience, expertise,and our Agile approach, we help businesses lower their operational costs.

3

Project transparency

Throughout every project, we provide continuous progress updates to foster a transparent and collaborative client experience, from start to finish.

4

One-of-a-kind design

If there is one thing we know, it is that you do not have to sacrifice design for functionality in software development. All our apps deliver flawless performance while staying true to our clients’ brand. 


Our work

We do not sacrifice speed for quality. Here’s how:

Many people (rightly) think that you can have it done well, and you can have it done quickly, but you cannot have both.

We are proud to say that we can do both.

Our Quality Assurance specialists can help you achieve both quality and speed, using advanced tools and expertise to weed out issues before there are any consequences to your budget or reputation.


Our QA specialists have a strict process that includes:

Functional and non-functional exploratory, smoke, and regression testing

Mobile user interface test automation

Improving quality in project processes

Planning and executing release activities

Test strategy, documentation, and reports

What else can we do?

Img Product Design

We help companies achieve their business goals by blending strategic product thinking with intelligent, branded design and seamless UX. Our solutions combine functionality, engagement, and memorable interfaces that make our clients stand apart in digital spaces. With diverse talent under one roof, we ensure every solution is not only visually compelling but also aligned with business objectives, user needs, and long-term growth.

Img Custom Iot Apps

Creating a seamless link between digital spaces and physical products is a challenge that requires particular attention to security, stability, and scalability. Our Internet of Things team helps clients achieve new revenue opportunities and drive company loyalty. We offer full-scale IoT project implementation, covering everything from devices and networks to cloud infrastructure, data management, and applications.

Img Enterprise Platforms

We have worked with large enterprises in almost every major sector, and we are known for developing high-powered platforms that flawlessly integrate with current business systems. Our expertise in machine learning and AI enhances processes and user experiences, while our auditing and consulting services proactively identify security risks and performance bottlenecks.

Img Ai Solutions

AI is the future, and we are here to help businesses implement it to automate their various processes and improve user experience. From idea validation and strategy consulting to solution development, we can help your business maintain its competitiveness and increase revenue. Our 14-day agentic sprint helps you cut through the noise, align on goals, assess technical readiness, and identify the most promising AI opportunities.

Security-first approach to development 

The financial, reputational, and legal consequences of cyber security breaches can devastate a company, its shareholders, and its customers. Infinum prioritizes security in everything we do to ensure trust, compliance, and long-term mobile functionality. Here’s how:

Internal security & compliance

Our ISO-certified agency adheres to strict industry standards for security and data protection. This extends to our third-party technology providers to ensure that compliance stretches across every surface. More security means better protection for our tools, processes, and projects.

Client-focused security

Our main security focus is the products we develop for our clients. Each custom mobile app we touch must adhere to standard security protocols, to guarantee compliance and data protection.

Let us discuss custom application development

You have an idea. We have a team that can stand behind you. Tell us about your project and we’ll get right back to you!

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FAQs

Frequently asked questions about our custom mobile application development services.

Infinum is a top custom mobile app development company in the USA and Europe offering end-to-end services, like:

Certainly. We are a full-service agency, which means that we closely monitor your custom app once it is live and make necessary updates, as needed. We can also help with your legacy app to ensure that it meets current design and functionality standards, as well as customer expectations.

If your company is seeking long-term scalability, stronger security, and a unique user experience better aligned with your brand, custom enterprise mobile app development is a more strategic investment. Custom apps can be designed with fewer limitations, giving developers more opportunities to build custom solutions that better suit a business’s expectations and needs. Additionally, custom app development is better equipped to incorporate the features a company needs and none of the features it doesn’t. 

With frameworks like Flutter and React Native, modern cross-platform apps can deliver exceptional UX and near-native performance for most business, e-commerce, and service-based applications. Cross-platform development optimizes costs and speeds up time to market while still offering smooth interactions, native-like UI components, and reliable functionality, so for many use cases, a well-built cross-platform app is virtually indistinguishable from its native counterpart.

We have had 20 years and 1,000+ product launches to help us fine-tune and speed up our development process. Because we work according to the agile methodology, we can deliver an MVP in months rather than years.

Our versatility across industries is our greatest strength. Being able to approach any project with out-of-the-box thinking and technical experience helps us avoid developing blind spots and discover new ways to innovate our app development and design.

As a rule, our developers hand over clean, maintainable, and well-documented custom code and make sure that you retain control over your own software. As such, you can easily transfer it to another development team without any issues. Avoiding vendor lock-in gives your business more autonomy over your mobile app.

Mobile application development focuses on creating apps for iOS and/or Android, optimized for performance, often working offline and integrating deeply with device features. Web app developers, on the other hand, build apps for browsers using HTML, CSS, and JavaScript. The choice between them depends on factors like user experience, functionality, and development resources. Some businesses opt for both to maximize reach and engagement.