10 Best Kotlin App Development Companies in Vietnam 2025

According to JetBrains, from 2023, over  60% of professional Android developers use Kotlin as their primary language, and Google officially recommends Kotlin for all new Android projects. Kotlin has become the go-to language for Android app development, enabling businesses to build fast, stable, and modern mobile apps. If you want to develop an Android app, working with a team that truly understands Kotlin can make your development easier.

In this article, we highlight some of the best Kotlin app development companies in Vietnam. Each has a proven track record, skilled developers, and their Kotlin projects to help you understand how these teams apply the language in practical ways. Let’s discover!

>> Read more: Kotlin vs Java: Which One is Right for Your Project?

Relia Software

Relia Software is a trusted development partner based in Vietnam, known for building native Android apps using Kotlin since its early adoption. Their developers are skilled at writing clean, efficient code that connects well with modern Android libraries and tools. From creating custom UI components to handling real-time data updates, the team knows how to use Kotlin to deliver solid performance across devices.

Clients working with Relia often appreciate how quickly the team gets up to speed and how they communicate throughout the development process. Instead of waiting for full specs, they work in short sprints, giving regular builds for feedback and review, making them a strong fit for startups or growing businesses that need a team ready to adapt fast.

Typical Kotlin App Development Project:

Relia Software uses Kotlin to build Android apps that need smooth performance, real-time data handling, and deep access to device features like GPS, camera, or secure storage. They’re a good fit for projects in fintech, healthcare, travel, and e-commerce, where apps often deal with live updates, secure logins, or complex user flows. Their team applies clean architecture and modern Kotlin tools to keep apps fast, stable, and easy to maintain over time.

SOTATEK JSC

SOTATEK JSC develops native Android apps using Kotlin for clients in sectors like finance, logistics, healthcare, and e-commerce. Their developers professionally apply modern Kotlin practices, such as coroutine-based asynchronous tasks, MVVM architecture, and Jetpack components into their apps, to integrate real-time features, secure payment flows, and location-based services.

In terms of experience, this firm is used to handling enterprise requirements, including multi-language support, complex data layers, and compliance with security standards. Their ability to pair strong Kotlin expertise with flexible offshore collaboration helps businesses scale Android projects without losing control over timelines or product quality.

Typical Kotlin App Development Project: Fintech Field.

SotaTek built a mobile banking app for a leading Thai bank using Kotlin. In this project, Kotlin was used to handle core features like digital loan registration, transaction history, and reward tracking, while also managing real-time sync with internal banking systems. 

The use of Kotlin coroutines helped the app load data smoothly without freezing the UI, even during heavy usage. This allowed users to access financial services quickly, from applying for loans to checking reward points, all within a clean and responsive mobile experience.

>> Read more: Top 11 Fintech Software Development Companies in Vietnam

Newwave Solution 

Newwave Solution usually combines modern tools like Jetpack Compose, Kotlin Flow, and Room to support smooth UI, real-time data, and offline usage in their Android apps. They’ve worked on mobile platforms for healthcare, education, and delivery services, where fast performance and consistent behavior across Android devices are essential. 

For most projects, they assign a dedicated team that handles development in short, clear sprints. Instead of waiting until the end, they share early builds and adjust based on real feedback from clients, which helps their clients stay closely involved without slowing things down. Newwave’s Kotlin team also focuses on writing clean logic and documenting it well, so future updates or handovers stay simple.

Typical Kotlin App Development Project: Healthcare Field.

Newwave Solution used Kotlin to build a sports app for Android that lets users explore thousands of medications and health products often used in training and recovery. Users can scan barcodes, search for details, and get quick results on both over-the-counter and prescription items. Kotlin helped the team keep the app fast and smooth, even when handling large amounts of data. 

>> Read more: 6 Best Vietnam Healthcare Software Development Companies

SphinX

SphinX has worked on mobile tools for ERP systems, service booking, and staff communication, projects that need both solid performance and clear, user-friendly design. Their developers work with Kotlin coroutines, Jetpack libraries, and clean app structures to make sure the apps run smoothly, even with lots of data moving in the background.

For bigger apps, they break the work into smaller parts so features can be added or changed easily later on. This helps clients grow their product without starting from scratch. The team also works closely with backend developers, making sure the Kotlin app connects well with all systems behind the scenes.

Typical Kotlin App Development Project: Travel Field.

SphinX used Kotlin to build the Note Travel app for Android, designed to help users organize all their travel information in one place. The app lets people store tickets, itineraries, contacts, and travel notes offline, which is especially useful when there’s no internet access. Kotlin was used to manage smooth data loading and background syncing, so everything stays updated without slowing down the app. 

>> Read more: Top 10 Best Travel App Development Companies in Vietnam

Saigon Technology

Saigon Technology has used Kotlin in a wide range of Android projects, from mobile banking apps to delivery tracking tools, which need to handle real-time data, secure payments, and large product lists. They are also experienced in working with Jetpack Compose, Kotlin coroutines, and other modern tools to make sure everything runs fast and stays easy to manage.

Their process is built around regular communication and quick feedback. Clients receive early versions of the app during development, making it easier to test features and adjust plans when needed. For companies that expect their product to grow over time, this approach has proven reliable and efficient.

Typical Kotlin App Development Project: Logistics Field.

For Merit Logistics, Saigon Technology developed an Android app using Kotlin to streamline warehouse staff check-in and check-out. The app connects with external devices for PIN and face recognition and has to work reliably across various on-site conditions. 

In this project, Kotlin allowed their team to manage real-time interactions with hardware and maintain app stability through continuous updates. The solution was part of a broader ERP upgrade, but the Kotlin-built Android layer played a key role in improving daily operations at ground level.

>> Read more: 9 Leading Logistics Software Development Companies in Vietnam

Stepmedia Software

Stepmedia Software builds native Android apps using Kotlin, especially for projects that need reliable performance and deep access to device features like GPS, camera, or secure storage. While they also work with Flutter and React Native, Kotlin is often their go-to for apps that need to handle real-time updates or custom system-level functions. 

Their team usually works with clear phases and keeps clients involved through regular demos. Many clients choose Stepmedia for their quick response, clear planning, and ability to adjust when things shift mid-project.

Typical Kotlin App Development Project:

Stepmedia Software used Kotlin to build the GoMua Android app, a shopping platform where users browse products, place orders, and track deliveries all in one place. They chose Kotlin to keep the app snappy and reliable, especially during checkout and live tracking. 

The team used coroutines to handle real-time updates without freezing the screen and Jetpack libraries to make sure listings load fast. Weekly builds were shared with the client so they could test the shopping flow early and suggest tweaks before launch.

MLTech Soft

MLTech Soft uses Kotlin to build Android apps that are fast, stable, and easy to use. They’ve worked on mobile apps for career guidance, agriculture, and education, often building tools that run well even without strong internet. In one of their career apps, Kotlin was used to power personality tests, live chat, and smooth user flows without delays.

Their team shares early versions of the app during development, so clients can test things out and give feedback along the way. They use modern Android tools like Jetpack libraries and structure their Kotlin code so it’s easy to update or add features later. Local brands like Unilever and IDP have worked with MLTech Soft because they’re clear in communication and deliver steady results without surprises.

Typical Kotlin App Development Project:

MLTech Soft created the KUN app for Android using Kotlin to make learning feel like playing. Kids aged 5 to 11 can sign in, pick daily challenges, and earn rewards. The app’s clean structure and Kotlin-based background tasks help keep everything responsive and easy to use. Updates were shared early during development, which helped the team adapt content flow as they saw how kids interacted with the app.

HiTek Vietnam

Vietnam-based HiTek Vietnam (also known as Hitek Software JSC) builds Android apps using Kotlin alongside other technologies like Flutter and React Native. Their strength lies in building apps that need tight integration with internal systems, like CRMs, ERPs, or management platforms. 

Unlike many firms that split design and development, HiTek keeps both in-house, which helps reduce miscommunication and delays. They also maintain a dedicated QA unit that tests Kotlin apps across devices and Android versions. This setup gives them better control over quality and stability, two things clients often look for when launching business-critical apps.

Typical Kotlin App Development Project:

HiTek Vietnam integrated Kotlin into the OneDrop Android app, designed for real-time health tracking using biosensors via Bluetooth Low Energy. They used Kotlin to manage background data sync, so users can track blood glucose and other vitals without noticeable delays or crashes. The team also handled encrypted cloud storage, multiple user profiles, and social sign-in in Kotlin to support fast, reliable health monitoring.

Agile Tech

AgileTech brings Kotlin into building Android apps that support fast-growing startups and digital platforms. Their developers make full use of Kotlin’s clean syntax and Jetpack tools to keep apps lightweight and easy to update, especially when user demands change quickly.

One of AgileTech’s advantages is their ability to balance speed with structure. Their Kotlin projects often come with clear documentation and test coverage from the start, which helps clients avoid technical debt later. This makes them a good fit for businesses that want to scale without rebuilding their Android app every time the product evolves.

Typical Kotlin App Development Project: Healthcare Field.

AgileTech used Kotlin to build the Android app for a remote patient monitoring system, helping patients track health data like heart rate and blood pressure at home. Kotlin’s background processing, LiveData, and Clean Architecture let the app gather sensor data, display charts, and alert users without lag or crashes. Patients and caregivers could also sign in securely, view up-to-date readings, and share data in real time. 

AMIT GROUP

AMIT GROUP builds Android apps using Kotlin for clients in areas like education, project management, and customer service. They also know when to go with native Kotlin and when a cross-platform option might work better, depending on what the app needs to do.

Instead of just following instructions, the team takes time to understand how the business works and adjusts their process to match. They stay flexible when plans change and offer ongoing support after launch. For businesses that want a reliable Kotlin team without overspending, AMIT is a solid choice.

Typical Kotlin App Development Project:

AMIT GROUP used Kotlin to build the Android app for PanUnited’s GoTruck platform, giving truck drivers a smooth way to accept jobs, confirm deliveries, and track their routes. Kotlin also supports secure logins and background syncing, letting drivers stay connected even in areas with weak signals. It connects directly with a web portal used by operators, making the whole logistics flow easier to manage on both ends.

>> Read more:

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• 9 Best Android App Development Companies In Vietnam
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Conclusion

Choosing the right Kotlin development partner can make a big difference in how your app performs and scales over time. The companies listed here have shown that they know how to use Kotlin in a practical way, building apps that are stable, easy to maintain, and ready for real users. Whether you need a full development team or support for a specific Android project, these teams bring the experience and tools needed to get the job done well.

Take time to review their work, ask about their Kotlin practices, and see which team matches your goals best. With the right partner, you’ll be able to build an app that not only works well today but also grows smoothly with your business.

>>> Follow and Contact Relia Software for more information!