RankFirms

Top Kotlin Development Companies

The Kotlin developer community surpassed 5 million users worldwide in 2024, with 60% of Android developers adopting Kotlin for app development. Source: JetBrains

Kotlin has rapidly become one of the most popular programming languages for building modern, efficient, and secure applications. As the official language for Android development and a powerful alternative for cross-platform and backend projects, Kotlin offers developers enhanced productivity, safety, and flexibility. Top Kotlin development companies specialize in leveraging this language to create seamless, scalable apps tailored to diverse industries, from fintech and healthcare to retail and enterprise solutions. By combining Kotlin’s expressive syntax with industry expertise, these firms deliver innovative solutions that ensure faster time-to-market, superior performance, and long-term business value for clients worldwide.

List of the Best Kotlin App Development Firms | Top Kotlin Development Agencies in the World

A global business and technology solutions company spanning across four continents. Specializing in IT Roadmapping & Technology Strategic Planning, IT Project Assessments & IT Project Management, IT Application Development & Support, IT Service Desk and Infrastructure Support, Information Asset Optimization/Business Intelligence Services, IT Project Portfolio Management, Ecommerce Application Development. Y&L is headquartered in San Antonio, TX and operates across 28… Read More
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    Employees: 201 to 500
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    Min. Project amount: $25000
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    Country: USA
Agilis Tech Labs is all about in equipping businesses with the best tools for the ride ahead. Whether it is intuitive workflow apps for mobile platforms, or wildly revolutionary e-commerce systems, it is imperative to align your company with a team that can navigate the rough waters of rapid scaling. With deep roots in development, companies around the world have… Read More
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    Employees: 11 to 50
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    Min. Project amount: $25000
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    Country: USA
Apps Hunts also has a foothold in the international market and is proud to have achieved satisfied customers around the globe. We believe in client satisfaction and hence we have helped our clients to achieve significant savings and increased productivity through our onsite/offshore services. Adhering to our client’s needs is our top priority and successfully accomplishing the client objective is… Read More
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    Employees: 11 to 50
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    Min. Project amount: $25000
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    Country: USA
10 Years of Industry Experience CAAZ brings together more than 10 years in the software and technology industry. Our experience in building software products and launching start-ups allows us to deliver results effectively and efficiently for our clients. 32 Team Members CAAZ consists of core team members on-shore in the United States, and talented developers located overseas in Bangladesh. Our… Read More
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    Employees: 11 to 50
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    Min. Project amount: $25000
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    Country: USA
TheoremOne (previously Citrusbyte) is an innovation and engineering company that advises clients on product strategy, engineering, design, and culture, then partners with them to build and launch technology-driven solutions to their most complex problems. TheoremOne is chosen by clients when results matter most — becoming the agent of change, and driving a transformation that involves not only technology, but also… Read More
Building the world’s most potent IoT platform AT&T
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    Employees: 201 to 500
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    Min. Project amount: $25000
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    Country: USA

Synczer

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BUSINESS EXCELLENCE It is critical to select the greatest technology for your company's growth. Hiring an innovative IT services provider is the most straightforward approach to ensure that you are maximizing technology, increasing revenue, and staying ahead of the competition. PROGRESS To aid you in your role as a partner, we've collated your demands and awards to determine which can… Read More
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    Employees: 2 to 10
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    Min. Project amount: $25000
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    Country: USA
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    Employees: 2 to 10
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    Min. Project amount: $25000
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    Country: USA

Decurtis

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By focusing on these three pillars, DeCurtis can assist clients in increasing safety and security, driving new revenue streams and enhancing the overall guest experience. The DeCurtis Experience Platform™ powers all of our solutions and turns any indoor space into a location-aware environment aimed at increasing health and safety while efficiently transforming the guest experience. HEALTH, SAFETY & SECURITY DeCurtis… Read More
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    Employees: 51 to 200
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    Min. Project amount: $25000
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    Country: USA

Lullabot

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Lullabot was founded in 2006 by Matt Westgate and Jeff Robbins with the initial goal of helping great organizations do big projects with Drupal. More than a decade later, we've accomplished that and so much more. Below is the fuller story of our history. Jeff Robbins and Matt Westgate met during the early stages of Drupal in 2005. Matt was a Drupal core developer who wrote and… Read More
As always, I am amazed by the quality and qualities of humans that constitute Lullabot. Dan Kessler Director of Technology, National Association of Music Merchants (NAMM)
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    Employees: 51 to 200
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    Min. Project amount: $25000
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    Country: U.S.A
We’re teachers, mentors, and seen‑it‑all‑beforers. Starting with your existing tools and practices, we make incremental improvements as you’re ready for them so that our process changes stick. Whatever issues you’re having with your software or your teams—we’ve likely seen them before, and we know how to solve them. Test Double agents are empathetic teachers and mentors, and we can’t wait to work with your team.… Read More
Test Double delivered a performance that in one case doubled our throughput . . . Steve continues to see around corners— identifying gaps in our architecture, proposing and implementing new approaches. I couldn’t imagine this project succeeding without his technical leadership. DAN CARROLL, CLEVER
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    Employees: 51 to 200
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    Min. Project amount: $25000
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    Country: USA

What services do Kotlin development companies typically provide?

1. Android App Development

Kotlin is the official language for Android, and companies build feature-rich, secure, and scalable Android apps using Kotlin’s concise and expressive syntax.

2. Cross-Platform Development

Using frameworks like Kotlin Multiplatform, agencies create apps that run seamlessly across Android, iOS, desktop, and web with a shared codebase.

3. Backend Development

Many Kotlin development firms use Kotlin with frameworks like Spring Boot or Ktor to build robust, scalable backend systems and APIs.

4. Migration from Java to Kotlin

Companies offer smooth migration services for businesses moving legacy Java applications to Kotlin, ensuring better maintainability and performance.

5. Custom Software & Enterprise Solutions

From fintech to healthcare, Kotlin developers create tailored solutions that address specific enterprise needs, integrating modern features like AI, IoT, and cloud computing.

6. Code Audit & Optimization

Kotlin specialists provide code reviews, bug fixes, and performance optimization to improve existing applications.

2.Why choose Kotlin over Java for Android development?

1. Official Language for Android

Google officially endorses Kotlin for Android development, ensuring strong community support, regular updates, and better integration with Android Studio.

2. Concise and Readable Code

Kotlin reduces boilerplate code compared to Java, making applications easier to write, maintain, and debug. Developers achieve more with fewer lines of code.

3. Null Safety

Kotlin’s built-in null safety eliminates the common NullPointerException errors prevalent in Java, improving application stability and reliability.

4. Interoperability with Java

Kotlin is 100% interoperable with Java, allowing developers to use existing Java libraries, frameworks, and tools without rewriting the entire codebase.

5. Modern Language Features

Features like coroutines for asynchronous programming, extension functions, and smart casts make development faster, more efficient, and scalable.

6. Improved Developer Productivity

With less boilerplate, powerful IDE support, and fewer bugs, Kotlin boosts overall developer efficiency and speeds up project delivery.

3.How much does it cost to hire a Kotlin development company?

1. Average Hourly Rates

The cost varies by region. On average:

  • US & Western Europe: $70–$150/hour

  • Eastern Europe: $40–$70/hour

  • Asia (India, Nepal, etc.): $20–$50/hour

2. Project-Based Pricing

  • Small apps / MVPs: $10,000 – $25,000

  • Mid-sized apps: $25,000 – $60,000

  • Enterprise-grade solutions: $60,000+ depending on complexity, integrations, and scalability requirements.

3. Factors Influencing Cost

  • App complexity (basic vs. feature-rich)

  • Integration needs (APIs, databases, third-party services)

  • UI/UX design requirements

  • Maintenance & long-term support packages

4. Hiring Models

  • Dedicated Team: Best for long-term projects needing constant updates.

  • Hourly Engagement: Flexible for short-term or small fixes.

  • Fixed Cost Projects: Suitable for well-defined scopes with clear deliverables.

5. Value Beyond Price

Top Kotlin development companies also provide faster delivery, scalability, code quality, and post-launch support, which outweighs just looking for the cheapest option

4.Which industries benefit most from Kotlin app development?

1. FinTech & Banking

Kotlin is widely used in secure mobile banking apps, payment gateways, and digital wallets due to its safety features and seamless interoperability with Java.

2. E-Commerce & Retail

From shopping apps to customer loyalty platforms, Kotlin powers scalable, fast, and user-friendly mobile experiences that handle high transaction volumes.

3. Healthcare & Telemedicine

Kotlin enables the development of HIPAA-compliant apps, telehealth platforms, and patient monitoring solutions with strong data security and reliability.

4. Media & Entertainment

Streaming, gaming, and content delivery apps benefit from real-time performance, smooth UI, and scalability offered by Kotlin.

5. Logistics & Transportation

Kotlin supports fleet tracking, delivery management, and mobility apps that require efficiency, geolocation integration, and real-time updates.

6. Education & eLearning

With the rise of EdTech, Kotlin is ideal for building **interactive learning apps, test preparation platforms

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