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Create a powerful mobile app custom-designed to serve your unique business needs and enhance user satisfaction.
At NIX, we bring over 30 years of experience in delivering advanced technology solutions, with more than 15 years devoted to mobile applications. During this time, our 60+ specialized engineers have completed over 1,000 projects, making us a trusted partner for building secure, scalable, and reliable apps.
As businesses face growing demand for mobility and customers expect seamless, personalized interactions, our custom mobile app development services empower companies to enhance engagement, streamline operations, generate new revenue streams, and stay connected on the go. With NIX, you gain a dependable team that understands both business goals and the demands of today’s mobile-first market.
There are three main approaches to creating mobile applications, each designed to meet specific business needs while considering resource availability. They differ in performance, time to market, and cost. As part of our mobile app development services, we help you define the right option for your goals while delivering efficient, high-quality solutions.
Native apps are built specifically for iOS or Android using the unique features of each platform. They provide unmatched performance, seamless access to device features, and an intuitive user experience—making them ideal for industries where reliability and responsiveness are critical. As seasoned mobile app developers, we ensure every native application is designed for speed, security, and long-term scalability.
Cross-platform apps allow companies to launch solutions for both iOS and Android from a single codebase with frameworks like Flutter and React Native. This approach accelerates delivery, reduces costs, and makes it easier to maintain consistency across platforms. NIX provides mobile application development services that leverage cross-platform tools to help businesses quickly reach wider audiences without sacrificing quality or performance.
Hybrid and progressive web applications (PWAs) run in the device’s browser environment, offering cost efficiency and rapid deployment. They’re a smart choice for MVPs, early-stage products, and businesses seeking lightweight solutions with broad accessibility. Our team develops hybrid and PWA solutions optimized for usability and security, helping clients validate ideas, engage customers, and expand strategically into new markets.
Our UI/UX team creates exceptional apps with attractive designs, clear interfaces, and convenient user experiences. Focusing on user-centered design principles, we ensure every screen is intuitive and every action seamless. The main goal is to provide visually appealing and accessible apps that match your brand at every touch. With our mobile application design services, you gain a product that not only looks professional but also strengthens engagement, increases retention, and supports your broader business goals.
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We specialize in building high-performing, scalable, and native-looking apps for Android devices using the most relevant technologies. Our team creates robust, secure, functional, and customer-centric applications that become strategic assets for your business. You’ll receive a high-performing Android solution that is both functional and user-friendly, perfectly tailored to your brand. With over 15 years of experience and more than 60 dedicated mobile app developers, we’re well-equipped to ensure your Android app is designed for speed, security, and long-term scalability.
Our team creates intuitive mobile apps with rich functionality for Apple devices, maximizing the use of all iOS system capabilities. As experienced mobile developers, we have a proven track record of creating iOS applications that will contribute to your business prosperity and become strategic assets. You’ll get actionable data insights, operational efficiency, and higher brand awareness, all from a seamless user experience. With over 1,000 completed projects, we’ve established ourselves as a trustworthy partner in developing reliable, secure, and scalable solutions for companies of all sizes.
We build apps that run across multiple platforms using the same codebase with Flutter or React Native. Our engineers tailor architecture and integrations to your business processes, ensuring smooth performance and native-like usability. You gain faster releases, lower maintenance effort, and simplified scaling. With NIX, cross-platform development is not just about cutting costs but about creating durable mobile app solutions that support growth and long-term competitiveness.
NIX engineers develop the back-end infrastructure, both cloud and hardware, ensuring stability, security, and seamless integration with your business systems. Our team works with leading cloud platforms and modern frameworks to build APIs, databases, and services that handle heavy loads and scale as demand grows. You get reliable architecture, faster performance, and solutions that simplify ongoing support. With our expertise, your app runs smoothly in real-world scenarios, ensuring proper mobility and smooth operations under any conditions.
Within our mobile application development services, we modernize outdated solutions to keep them secure, efficient, and aligned with current user expectations. Our team upgrades architectures, improves interfaces, adds new features, and enhances performance without disrupting your existing workflows. As a result, you can transform your systems into modern, scalable tools that support your growth strategy while reducing maintenance costs and technical debt.
We provide in-depth consulting to help you shape a clear mobile strategy and reduce the risk of costly missteps. Our experts audit existing applications, evaluate business goals, and recommend the right technologies and architectures for your project. We deliver actionable insights that align with both your operational requirements and long-term growth objectives. From idea validation to technical roadmaps, our custom mobile app development services ensure your initiative is positioned for measurable success.
NIX can enhance your in-house expertise with our dedicated engineers who integrate seamlessly into your workflows. This model gives you access to specialized skills, faster time to market, and reduced management overhead. Our teams support everything from back-end systems to cross-platform solutions, tailoring their approach to your processes while maintaining consistent quality. By adding flexibility and technical depth, we help you scale quickly, address resource gaps, and ensure your mobile projects move forward without delays or compromises.
We ensure your applications remain secure, stable, and continuously optimized long after launch. Our team provides proactive monitoring, bug fixes, feature updates, and performance improvements, keeping your products competitive in a fast-changing market. Whether supporting consumer-facing apps or complex enterprise mobile application systems, we extend life-cycle value and maintain peak performance under real-world conditions. With structured maintenance plans and responsive support, your app evolves alongside your business and user expectations.
Learning and developing an app on your own takes valuable time and resources. Concentrate on your business, while NIX covers you with what we’re good at—reliable mobile development.
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In the modern digital landscape, mobile applications have become essential to business operations across industries, streamlining processes and deepening customer engagement. Unlike web applications, mobile apps are always at hand, easy to use, and respond quickly. This creates a vast opportunity for growth through unique advantages:
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When developing a mobile app, we prioritize user-centric design to create a seamless and intuitive experience. By putting users first, we ensure that your app is not only robust and smooth but also a powerful catalyst for business growth through:
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A robust mobile application enables you to gather valuable feedback, provide exceptional support, and execute targeted marketing activities such as promotions, sales, and discounts. As a result, you’ll gain:
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Our mobile app development services enable you to gather valuable data about customer behavior through integrated analytic tools. Mobile apps we develop provide a strong platform for businesses to gain critical insights, including:
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By developing mobile applications aligned with your strategy, we help you respond quickly to market changes and new customer needs. Our solutions transform ideas into scalable products that drive growth.
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We apply the latest technologies and best practices in native app development to deliver solutions built for long-term success. Each mobile app development project is designed to stay efficient, secure, and adaptable.
We relentlessly innovate, develop, and refine cutting-edge features to craft an exceptional application that not only surpasses expectations but also propels unparalleled business growth.
Elevate your mobile app with our AI application development services, utilizing a robust tech stack that includes machine learning, natural language processing, and computer vision. With advanced capabilities like image recognition, sentiment analysis, personalized experiences, predictive analytics, and workflow automation, you can achieve your strategic goals faster.
Seamlessly integrate diverse capabilities, such as GPS/GIS, BDS, and others, into your mobile solution. NIX will help you enrich your application with necessary features, from location tracking and mapping to real-time, accurate time monitoring.
Smoothly integrate camera and video accessibility into mobile applications, offering an array of impressive photo and video effects. This way, you enhance the user experience and interaction, leading to better conversions and a stronger competitive edge.
Leverage AR/VR capabilities in your application to bring user engagement to a whole new level. By relying on our professional mobile app development services, you gain access to the latest technological advancements, including AR/VR support, to digitize products and elevate your business.
Develop a comprehensive suite of customizable wearable applications for smartwatches, fitness and medical devices, and security wearables. These solutions provide advanced data recording, management, and visualization capabilities. They’re designed to seamlessly integrate with users’ devices, delivering actionable insights in real time.
Manage your IoT environment with a smart app. We utilize sophisticated ML and AI, data science, and cloud computing to supply you with a secure and scalable IoT mobile solution. This system brings real-time monitoring, management, and data insights straight to mobile devices, designed to fit diverse business needs.
Unlock the full potential of your mobile application with a cloud-first approach, supported by NIX’s trusted partnerships with Amazon Web Services, Microsoft Azure, and Google Cloud Platform. Our offerings span a wide range of capabilities, including DevOps, Kubernetes services, FinOps, and vertical cloud, ensuring comprehensive and robust solutions.
Develop top-notch smart TV applications, compatible with industry-leading operating systems like Apple TV, Android TV, and Amazon Fire TV. Our expertise ensures an immersive and engaging user experience, offering clients unparalleled quality and functionality that captivates their audience and enhances their brand presence.
Ensure your mobile app’s safety with our rigorous adherence to industry-leading security practices and advanced data encryption. This commitment protects user data, maintains trust, prevents financial losses, safeguards intellectual property, and ensures transparency and user control, ultimately providing a trustworthy experience for everyone using the app.
Make your mobile application fully accessible by strictly following WCAG and Apple and Android Accessibility Guidelines. We incorporate various accessibility features—such as visual indicators, screen readers, voice control, color contrast, and other adjustments—to create an inclusive and user-friendly experience for everyone, including those with diverse impairments.
Engage users effectively with timely push notifications and in-app messaging. We design and implement personalized communication flows that increase retention, drive actions, and enhance the overall user experience. Our custom mobile application development services ensure seamless integration with your system, providing real-time updates and meaningful interactions.
Keep your mobile applications secure and fully compliant with HIPAA, GDPR, and PCI DSS regulations. We implement advanced security measures that protect sensitive information and maintain user trust. This ensures your applications are reliable, compliant, and ready to meet industry standards, backed by our expertise in mobile app development services.
Build sustainable applications that minimize environmental and societal impact. We prioritize inclusivity, energy and cost efficiency, and resource optimization, following sustainable design principles. This approach not only supports a greener future but also enhances the long-term efficiency and usability of your products.
This guide provides you with a checklist of criteria for choosing the best-suited contractor for your task. Each of them affects success at the end of the journey.
We’re proud that independent organizations and experts have highly rated us as an experienced custom mobile app development company. It motivates us to excel more and improve our standards to offer clients better technology solutions.
We really care about project success. At the end of the day, happy clients watching how their application is making the end user’s experience and life better are the things that matter.
Buildforce: Mobile App for the Construction Industry
Construction
Fotoware: Mobile App For Digital Asset Management
Internet Services and Computer Software
FITHOOD: Mobile App for a Seamless Fitness Experience
Wellness & Sport
Mobile App for Enhanced Agricultural Workforce Management
Agriculture
B-Fit: Mobile App for Encouraging Healthy Lifestyle
Healthcare
“Delivering high-quality code”
With NIX, I have broken some of my own rules of team composition with respect to the ratio of FTE and 3rd party engineers. I have some teams that are more than 50% NIX because the code coverage, quality, and velocity coming out from the NIX developers are very good. Delivering high quality code in a predictable manner has built trust and confidence with my management/full-time employees.
SVP of Engineering at Cengage
“It is hard to impress me, and NIX kept me happy”
There is no recommendation that is more powerful. NIX’s expert team built a new system that increased potential customer traffic and improved performance. Their transparent workflow allowed for consistent communication and quick correction of problems when they arose. They also adjusted their processes to mitigate time-difference concerns.
Director of Operations at CarSoup
“NIX is doing an amazing job”
NIX team contributed a lot to the process improvements for code deployment practices. So not only we write clean/stable code now but also, we are able to deploy it a lot more successfully and faster. We have a better strategy for our branch cutting and code repositories. It takes much less time to deploy code now with a higher level of stability. NIX team also contributed their ideas and views on how we can break up work among team members more effectively.
Sr. Director of Engineering for MindTap
“Quickly and professionally”
I have used NIX for 3 different companies over the past 3 years that I have been CTO of. Projects have spanned a wide variety of technology stacks. NIX has come through each time with the right project manager, quality assurance, business analyst, DevOps, and developers. They quickly and professionally get up to speed with our current processes and seamlessly merge with any professional environment.
Chief Technology Officer at Sparkle Stories LLC
“You have done the work perfectly”
I want to say thank you for the excellent, highly professional work, for your passion, and your time even on holidays and weekends. Your attitude ultimately led to outstanding results. We are satisfied with the result we’ve achieved, but we need to keep working, and actively use every opportunity to make it better. You have done the work perfectly and the application, which you created in such a short time, turned out to be very functional and cool.
VP R&D at HumanEyes
iOS:
Swift, Objective-C, SwiftUI, UIKit, Swift Concurrency, Combine, Xcode
Android:
Kotlin, Java, Jetpack, Jetpack Compose, Coroutines, Android Studio
Flutter:
Dart, BLoC, Riverpod, Material 3, VSCode
React Native:
JavaScript, TypeScript, React Navigation, Redux, MobX, Expo, VSCode
Languages and Frameworks:
Node.js, Java (Spring Boot), .NET, Python (Django/Flask)
APIs:
RESTful APIs, GraphQL
Documentation Tools:
Swagger, Postman
Infrastructure & Deployment:
Docker, Kubernetes, Terraform
Unit/UI Testing:
Swift Testing, XCTest, Espresso, JUnit, Jest, FlutterTest
CI/CD:
GitHub Actions, GitLab Bitrise, Xcode Cloud, Firebase App Distribution, TestFlight, App Store Connect, Google Play Console, Fastlane
Test automation:
Appium
Cloud:
AWS, Microsoft Azure, Google Cloud Platform (GCP), Firebase
Security:
OAuth 2.0, JWT, SSL/TLS encryption, Keychain/Keystore, GDPR compliance
Years of experience taking projects from MVP to launch and beyond have shaped us into a custom mobile app development company trusted for its consistent results. By following a structured production life cycle, we combine best practices with proven methodologies to deliver products that scale and perform.
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We start by defining functional and non-functional requirements and researching competitors. The NIX team crafts user personas, selects the optimal technology stack, and sets clear goals and KPIs. As a result, you get a detailed roadmap that guides every development decision and ensures measurable success.
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Next, we clarify app requirements and design intuitive UX flows. Specialists produce mockups, refine UI designs, and develop style guides along with interactive prototypes. The goal is to prepare developer-ready assets that turn ideas into tangible designs.
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From here, our mobile developers come into play, picking the best architecture and configuring back-end frameworks. NIX engineers integrate APIs, model databases, and implement libraries and ready-made solutions. Our development team also sets up CI/CD pipelines to ensure smooth, scalable performance.
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Now, it’s time for QA activities. We run layered tests on core and secondary features. QA specialists check security, usability, and performance under high-load and stress scenarios. It’s crucial to catch and eliminate every issue early on before it causes damage. This way, we guarantee flawless operation of your mobile application.
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Finally, we launch the app on the Apple App Store and Google Play. The NIX team rolls out updates, expands functionality, and monitors analytics and user feedback. Our experts continually improve the app to match user needs and business goals.
Software development is our calling, not only a technical assignment. We dive deep into every project, exploring far and wide to deliver the most relevant solutions to your business challenges. We offer our extensive tech expertise, supported by:
Engineers
years
Successful Projects
Using a proprietary approach, best practices, and cutting-edge technologies, we’ve created advanced mobile solutions for various purposes and gained comprehensive industry expertise:
We don’t outstaff engineers. We hire capable talents, grow their expertise, and provide them with interesting projects.
We follow a proprietary approach to software development and educate the client’s in-house teams accordingly.
We heavily invest in R&D of cutting- edge technologies to deliver reliable solutions when clients request them.
Consumers’ behavior and preferences are constantly evolving, and businesses must transform even more quickly to keep up with the market and stay on top of mind.
With a vast background in business analysis, Roman is keen on identifying actual business challenges, defining tailored software requirements, and navigating IT projects to market success.
Roman Zelinskyi
Software Solutions Consultant
With 10+ years of experience in mobile development, Jane tackles tech challenges and creates powerful solutions from simple apps to complex IoT systems across multiple industries.
Jane Chubenko
Mobile Development Lead
Rostislav is an engineer and versatile leader with almost a decade of building user-facing mobile apps and empowering clients from startups to large enterprises with in-demand solutions across a wide range of business domains.
Head of Android Tech Practice and Flutter Specialist
Custom application development is the process of designing, engineering, and releasing a unique app for mobile devices according to specific business, technical, and design requirements. Unlike off-the-shelf solutions, custom apps are built to meet a particular customer’s needs precisely.
Absolutely. Consumers increasingly prefer instant, accessible experiences on their smartphones. As of 2025, over 7.21 billion people (approximately 90% of the global population) own a smartphone. The average person spends about 6 hours and 40 minutes daily on screens, with a significant portion dedicated to mobile usage. With the market projected to reach $585 billion USD in 2026, going mobile ensures your business stays ahead in this rapidly growing market.
The fair answer is: it depends on requirements and resources available. According to BusinessOfApps, on average, it takes:
Within our mobile app development services, we’re sure to evaluate your project, including from the point of view of its probable duration.
It all depends on requirements, project hourly estimation, and the mobile developers’ rate.
According to Clutch:
To get a precise cost estimation of the app, download our RFP template.
At NIX, we select frameworks based on your app’s goals, design complexity, platform requirements, and required integrations. We use native technologies like Swift and Kotlin for apps that need maximum performance, and cross-platform frameworks like Flutter and React Native for faster development across multiple platforms. The main goal is to analyze a specific case and choose the right tech stack and team to deliver a secure, scalable, and cost-effective solution tailored to the identified needs.
Choosing the right team goes beyond price—what matters most is quality, methodology, and alignment with your goals. Review portfolios, client feedback, and communication style, and ensure the team truly understands your business and treats your project as their own. At NIX, we follow this approach, delivering exceptional results and building long-term relationships that make us a trusted mobile app development company.
Learn more about how to choose the right development partner in our special article.
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According to our customer survey, the most valuable benefits of outsourcing application development are:
Leading companies like Apple, Microsoft, Google, Amazon, and Alibaba have long relied on outsourcing. NIX provides the same expertise, ensuring your project is delivered efficiently, with high quality and seamless collaboration.
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Native apps are built for a single platform (iOS or Android) and offer unmatched performance, security, and full use of device features. Cross-platform apps, created from one codebase, run on multiple platforms, enabling faster delivery and reduced costs. At NIX, our enterprise mobile app development approach combines the best of both worlds—ensuring enterprise-grade reliability while remaining accessible for startups and mid-sized businesses.
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We implement strict security measures, including encryption, secure authentication, and continuous testing, to protect sensitive data. Every solution aligns with HIPAA, GDPR, and PCI DSS. This ensures that applications remain compliant with industry regulations and protect user trust.
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Yes. We provide continuous support, proactive monitoring, and feature improvements to keep your app secure and competitive. Our custom mobile app development services extend the app’s life cycle, adapt functionality to evolving needs, and maximize long-term business value.
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Absolutely. Our clients often start with an MVP to validate their idea, test user adoption, and minimize risks. Once the concept proves successful, we add advanced functionality, integrate third-party services, and optimize performance. This way, you can gradually scale your product to meet the growing needs of your business and users.
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We optimize code, perform rigorous performance testing, and apply adaptive design principles to ensure apps function consistently across resolutions and devices. By combining engineering excellence with expertise across domains, we deliver responsive, user-friendly mobile app solutions that remain fast and scalable under growing demand.
We transform your ideas into powerful iOS apps, leveraging the latest technologies for robust, secure, and user-centric solutions.
We are a leading Android app development company, providing expert Android app development services tailored to your business needs.
Build a single cross-platform application to target both Android and iOS mobile platforms.
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