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Top Kotlin App Development Company

“Because life is too short for bad code."

Looking for a reliable Kotlin development company? Our team of expert app developers specializes in Kotlin Android app development. As one of the top Kotlin development companies, we offer top-notch Kotlin app solutions tailored to your specific requirements. Whether you need Kotlin app development services or Kotlin apps development, our skilled Kotlin programmers deliver exceptional results. Partner with us for reliable and efficient Kotlin development services that guarantee high-quality and scalable applications. Contact us today to discuss your project and witness the power of Kotlin in action.

Zealous System is a leading Kotlin development company offering comprehensive solutions for Kotlin Android app development. With a team of skilled Kotlin developers, we specialize in creating high-performance Kotlin apps that are user-friendly and feature-rich. As one of the top Kotlin development companies, we provide a wide range of Kotlin app development services, catering to diverse business requirements. Partner with us for reliable and efficient Kotlin development services that empower your business with cutting-edge mobile app development solutions.

Our Custom Kotlin App Development Services

“Our expert fingers take no time in crafting top-notch web apps!”

Android App Development with Kotlin

Android App Development with Kotlin

  • Our expert Kotlin developers use Kotlin’s concise syntax, null safety, and interoperability with existing Java code to ease out development and enhance code maintainability.
  • As a kotlin development company, we utilize robust architectural patterns such as MVVM or MVP, we create scalable and maintainable Android applications.
  • With Kotlin’s powerful language features, such as coroutines, to implement responsive and asynchronous app behavior, we ensure a smooth user experience.

Kotlin App Design Services

  • By implementing industry-standard design principles and Kotlin’s declarative UI frameworks, such as Jetpack Compose, our experts deliver pixel-perfect layouts and interactions.
  • With our Kotlin app design services, we analyze and refactor your existing codebase, optimizing it for improved performance, maintainability, and extensibility.
  • Our Kotlin experts use Kotlin’s powerful features like extension functions, and functional programming paradigms to enhance your app’s efficiency and user experience.
Kotlin App Upgradation Services

Kotlin App Upgradation Services

  • Our experts proficiently handle language-level changes, refactor codebases, and optimize performance, delivering enhanced functionalities and compatibility with the latest Android versions.
  • We refactor existing code, implement best practices, and optimize libraries to maximize your app’s performance and take advantage of Kotlin’s modern programming paradigms.
  • As a leading Kotlin app development company, we specialize in codebase analysis and optimization. Our developers work diligently to eliminate redundancies, enhance code readability, and improve maintainability, ensuring your app is efficient and future-proof.

Kotlin Consulting Services

  • Our consultants are proficient in conducting thorough code reviews and refactoring sessions, ensuring your Kotlin codebase adheres to best practices, industry standards, and design patterns.
  • We analyze your code for potential issues, such as performance bottlenecks, memory leaks, and thread safety, while suggesting improvements and optimizations to enhance your application.
  • Our Kotlin consultants guide you through the entire migration process, including identifying compatibility issues, refactoring code, and integrating Kotlin with existing frameworks and libraries.
Kotlin Migration Services

Kotlin Migration Services

  • Utilizing advanced tools and technologies such as Kotlin Migration Plugin and Kotlin Reflect, we efficiently migrate your existing codebase, ensuring compatibility and improved maintainability.
  • With powerful refactoring tools like Kotlin Refactor and IntelliJ IDEA, we perform code transformations, eliminate boilerplate code, and apply Kotlin-specific idioms to enhance code quality and readability.
  • Our skilled developers utilize testing frameworks like JUnit and Mockito to rigorously test the migrated code, ensuring functional correctness and minimizing potential regressions.
Kotlin Support and Maintenance

Kotlin Support and Maintenance

  • Our team of expert developers possesses in-depth knowledge of Kotlin’s core features, including null safety, extension functions, and type inference, enabling us to provide efficient troubleshooting, bug fixing, and performance enhancements.
  • With extensive experience in Kotlin development, our experts are well-versed in utilizing popular frameworks and libraries such as Ktor, kotlinx.serialization, Exposed, and Dagger 2.
  • We use tools like Kotlinx.coroutines.debug, Android Profiler, Kotlin-Logging, and Gradle Profiler to identify and resolve performance bottlenecks, memory leaks, and runtime issues, guaranteeing optimal application performance.
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Process We Follow As a Best Kotlin Development Company

“We don’t dive into unnecessary complexities.”


Scope Analysis Process

  • Requirement Gathering
  • Detailed Scope Documentation
  • Wireframes
  • Technical Feasibility

Sprint Planning & Execution

  • Sprint Planning
  • Daily Standup Meeting
  • Designing & Development
  • Testing & Stage/Dev Deployment

UAT & Release

  • UAT Feedback & Bug Resolution
  • Deliver Well-crafted software
  • Deploy All Assets and Code


  • Knowledge Transfer to Client Team
  • Contract Based Support
  • Release Notes/User Manuals (If applicable)

Trusted Kotlin App Development Company for Industry Owners

We are here to serve you with top-notch custom Kotlin app development services in India, USA to get your business going.

Why Choose Zealous As a Top Kotlin App Development Company?

Looking for a top Kotlin app development company in India? Choose Zealous System, as your trusted Kotlin development partner, offering exceptional Kotlin app development services in the USA. Contact us today!

360 Degree Solutions

As a top Kotlin app development company, we offer 360-degree solutions. Our team offers end-to-end services, from ideation to deployment and maintenance, ensuring a seamless development experience. Trust us for comprehensive Kotlin app solutions that drive business growth.

Transparent Communication

It is important for Kotlin development company to prioritize transparent communication. We keep you informed at every stage of the Kotlin development process, ensuring a smooth collaboration and making sure your project aligns with your vision and requirements.

Agile Ready

Choose Zealous as your top Kotlin app development company in India because we are Agile Ready. Our team follows Agile methodologies to ensure swift and efficient project delivery. With Agile, we adapt to changes, foster collaboration, and deliver superior Kotlin apps development services that meet your evolving business needs.

Security and Confidentiality

Security and confidentiality should be in top priority for every best Kotlin app development company. We prioritize data protection, ensuring your sensitive information remains secure throughout the app development process. Trust us to safeguard your business’s valuable assets.

User-Centric Approach

At Zealous System, we prioritize a user-centric approach in our custom Kotlin app development services. By understanding your target audience and their needs, we create intuitive and user-friendly Kotlin apps that deliver an exceptional user experience, driving customer satisfaction and business success.

Cost-Effective Solutions

Choose Zealous as your top Kotlin app development company for cost-effective solutions. We offer competitive pricing models without compromising on quality, ensuring that you get the best value for your investment in Kotlin app development.

Quality Assurance

Find Zealous as your top Kotlin development company for unmatched quality assurance. We prioritize rigorous testing procedures to ensure bug-free and glitch-free applications, delivering a seamless user experience. Trust us to deliver superior quality Kotlin solutions for your business.

Latest Technologies

At Zealous System, we stay updated with the latest technologies in Kotlin Android app development. Our expertise in leveraging cutting-edge tools and frameworks ensures that your app is developed using the most advanced and efficient solutions available in the market.

Our Portfolio

"We are very proud of our diverse portfolio and the projects that our experts have created!"

Instant school
Instant School App

The Instant School App is a Mobile Platform that allows Schools to enrich relationship with their students’ parents in a few easy steps.

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K3 logistics
K3 Logistics

K3 Logistics is an Order Tracking app which provides a logistical tracking and monitoring system for a logistics company, where drivers and suppliers can track the progress of their orders.

View Portfolio


Digital wallet app
Digital Wallet App

Developed for one of our client in Middle East, digital wallet app is a new and convenient way to transfer money domestically as well as internationally, pay at authorized shops, and pay basic bills.

View Portfolio


Sonic tonic app
Sonic Tonic App

Sonic Tonic is an e-Health App that uses medically accepted Receptive Sound Therapy for making effective & fast interventions.

View Portfolio


AR spots finder
Ar Spots Finder

AR Spots Finder is a Mobile App that allows Visitors and Shoppers to easily locate a Brand, Product, Shop or Promotion in a Mall or at a Venue by utilizing Augmented Reality & Beacon Technology.

View Portfolio


Our Podcasts

Client Testimonials

Clutch Goodfirms

I have used Zealous for several of my projects, I have found the team to be very professional yet personable. When I work with Zealous, I know I am getting the best developers who understand my requirements before they start.

Andrew Arlington

Andrew Arlington

Sales Director at Digital Dilemma

I was retained by a client as a Software and Cloud Architect to support internal and customer-facing products. The client had existing mobile apps of poor quality built by another provider.

John Bentley

john bentley, II

CTO at 10XTS

From day-1 Pranjal and his team have been very good at delivering quality work on time to budget. They are dynamic, if resources need to be shuffled around depending on what work needs to be done.

Graham Bradford

Graham Bradford

Senior Product Manager at Ecentric Payment Systems Driving

Frequently Asked Questions

“We built strategies before development that work just for you.”

How does Kotlin Work on Android?

Kotlin works on Android by being fully compatible with the Java Virtual Machine (JVM). It can be seamlessly integrated into existing Java codebases, allowing developers to gradually migrate their projects to Kotlin. Kotlin offers features such as null safety, smart type inference, extension functions, and coroutines, which enhance the development process and make code more concise and readable.

Kotlin is fully supported by Android Studio and provides excellent tooling, including code completion, refactoring, and debugging support, making it a powerful language for Android app development.

Can I use Kotlin for Android app development?

Yes, Kotlin is fully compatible with Android app development. In fact, Google officially supports Kotlin as a first-class language for Android development. Kotlin offers seamless integration with existing Java codebases, making it easy to adopt and migrate existing projects. Our expert developers prefer Kotlin over Java for Android app development due to its modern features and enhanced productivity.

How can I integrate existing Java code with Kotlin?

Kotlin has excellent interoperability with Java, making it easy to integrate existing Java code with Kotlin projects. Kotlin can call Java code directly, and vice versa, without any issues. You can start using Kotlin in your Java project gradually, converting files one by one. Kotlin’s tooling provides automatic Java-to-Kotlin conversion and helps you deal with any compatibility issues. This flexibility allows you to use Kotlin’s features in both new and existing projects.

how to choose kotlin development company?

When choosing a Kotlin development company, consider the following factors:

Experience and Expertise: Look for a company with a proven track record in Kotlin development and a portfolio showcasing successful Kotlin projects.

Technical Proficiency: Ensure the company has skilled Kotlin developers who are knowledgeable about Kotlin’s features, libraries, and best practices.

Client Reviews and Testimonials: Read client reviews and testimonials to assess the company’s reputation, reliability, and quality of Kotlin development work.

Communication and Collaboration: Choose a company that emphasizes clear communication, collaboration, and provides regular updates on project progress.

Flexibility and Scalability: Verify if the company can handle your project requirements, offer scalability options, and adapt to your changing needs.

Timelines and Delivery: Discuss project timelines, milestones, and delivery expectations upfront to ensure they align with your project’s timeline.

Support and Maintenance: Inquire about post-development support and maintenance services to ensure ongoing stability and updates for your Kotlin application.

By considering these factors, you can choose a Kotlin development company that is well-equipped to meet your project requirements and deliver high-quality Kotlin app development services.

How do you take care of intellectual property rights?

At the outset of every project, we establish a Non-Disclosure Agreement with each client to uphold strict confidentiality standards. Our commitment to safeguarding our clients’ information and intellectual property is of the utmost importance to us, and we take every precaution to ensure that it remains secure and private.

What advantages does Kotlin offer over other programming languages for app development?

Kotlin is a modern, type-safe, and concise programming language that offers a wide range of benefits over other programming languages for app development. Some advantages of Kotlin include its interoperability with Java, support for functional programming, concise syntax, and null safety features, which can help improve the stability and reliability of your app.

  • Zealous Goodfirms
  • Zealous Clutch
  • Microsoft Partner
  • Google Agency Partner
  • D & B Partner
  • Adobe Solutions