Kotlin Multiplatform App Development

Save up to 50% of development costs and keep native quality with Kotlin Multiplatform.

Hire Developers

What KMP Services Do You Get?

Cross-Platform Development

Build iOS and Android apps simultaneously using one shared Kotlin codebase. We reuse business logic across platforms while keeping native performance, ensuring faster delivery and fewer bugs.

API Integration for All Platforms

Integrate APIs once and deploy them everywhere: payments, logins, analytics, and more. With Kotlin Multiplatform, you reduce duplicate work and shorten QA time, leading to smoother releases and happier users.

Platform-Specific UI/UX

Deliver native look and feel for every platform. We share backend logic but design separate UIs for iOS and Android, so each app matches user expectations and platform guidelines perfectly.

Native Features Integration

Access full native capabilities, camera, GPS, push notifications, sensors, all without sacrificing shared code benefits. KMP gives you the best of both worlds: native power and cross-platform efficiency.

Kotlin Multiplatform Consulting and Migration

Already have a team but need to switch or scale to Kotlin Multiplatform? We help you migrate existing codebases, train developers, and stabilize ongoing projects to keep delivery on time and budget.

Technologies We Use

No items found.

Proven Expertise in Kotlin Multiplatform

Our senior developers are experts in Kotlin Multiplatform, with proven experience migrating complex apps. We ensure clean architecture, maintainable code, and native-level performance.

Reliable and Transparent Delivery

We work as an extension of your team, following your tools, processes, and reporting style. Your dedicated team is fully engaged from start to finish, and milestone-based updates keep every project on track.

Predictable Budget and Timelines

With a precisely defined project scope, you always know what you’re paying for. We help startups and enterprises plan ahead, cut unnecessary costs, and deliver fully functional cross-platform apps on time.

We'll Recommend the Best Migration Technology

Kotlin Multiplatform (KMP)

Ideal when you need to stay within budget while keeping native UI flexibility.

KMP allows you to share business logic across iOS and Android while still using native UI components,speeding up development without sacrificing performance.

Compose Multiplatform (CMP)

Perfect for teams that want a modern, shared UI and business logic in one codebase.

CMP enables you to build beautiful, responsive interfaces for both iOS and Android, reducing maintenance and accelerating releases.

If not knowing what to choose, here you can get more info about KMP vs CMP.

Flutter

Best for apps requiring a fully shared UI across iOS and Android, ensuring fast cross-platform development with near-native performance and a rich widget library.

React Native

A solid choice for projects that need quick time-to-market and strong community support,offering
a balanced mix of speed, performance, and reusable components.

Why choose us over others?

These are the benefits our clients value most and the main reasons we have successfully collaborated for many years:

Transparent Pricing

You get a clear budget from the start, so you always know where your money is going.

No Missed Deadlines

Consistent updates on app development ensure you remain in control of every step.

Ownership Mindset

We care about your project as much as you do, that is why we often overdeliver.

Why Choose Us Over Others?

These are the benefits our clients value most and the main reasons we have successfully collaborated for many years:

Proven Expertise in Kotlin Multiplatform

Our senior developers are experts in Kotlin Multiplatform, with proven experience migrating complex apps. We ensure clean architecture, maintainable code, and native-level performance.

Reliable and Transparent Delivery

We work as an extension of your team, following your tools, processes, and reporting style. Your dedicated team is fully engaged from start to finish, and milestone-based updates keep every project on track.

Predictable Budget and Timelines

With a precisely defined project scope, you always know what you’re paying for. We help startups and enterprises plan ahead, cut unnecessary costs, and deliver fully functional cross-platform apps on time.

Why Choose Aetherius for Your Cross-Platform Migration

These are the benefits our clients value most and the main reasons we have successfully collaborated for many years:

Transparent Pricing

20+ successful cross-platform projects delivered, including complex Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP) apps for startups and enterprise clients.

No Missed Deadlines

Our clients typically cut development costs by 30-50 % and reduce time-to-market by up to 40 % after moving from native to cross-platform.

Ownership MIndset

Every project comes with a fixed, clearly defined estimate and a written guarantee of no hidden costs, backed by repeat clients and 5-star reviews.

Felix Wolf

Senior Consultant & Program Manager, Merkle DACH

"Aetherius Solutions helped the client improve revenue and customer ratings. The team always provided content on time and took the initiative to solve things really quickly. ”

Mike Ralph

Managing Director, Band of Coders

"Aetherius Solutions' work achieved the correct functionality, satisfying the client's expectations, and planning to collaborate on a larger project in the future."

Dmitry Zolotaryov

Ex Engineering Manager at Kin Social

"I worked with Aetherius Solutions team on an early-stage project. They were great at taking direction and executing a functional prototype of our concepts. Would love to work with his team again."

Adam Shishani

Founder, Dopalearn

"Working with Aetherius solutions was pure pleasure. They helped us bring our iOS MVP application to life while constantly providing valuable ideas on how we can further improve our product"

Yogesh Veeraraj

CTO, Wheretogo

"What stood out most about Aetherius was their exceptional adaptability and dynamic problem-solving approach."

Erkin Jumayev

Co-Founder of Mindguard

"Working with Aleksa and his team at Aetherius has been a great pleasure! He is very understanding, especially for people like me who aren't tech savvy, makes time to work on issues that come up, and is always willing to work hard to find a solution."

Felix Wolf

Senior Consultant & Program Manager, Merkle DACH

"Aetherius Solutions helped the client improve revenue and customer ratings. The team always provided content on time and took the initiative to solve things really quickly. ”

Mike Ralph

Managing Director, Band of Coders

"Aetherius Solutions' work achieved the correct functionality, satisfying the client's expectations, and planning to collaborate on a larger project in the future."

Adam Shishani

Founder, Dopalearn

"Working with Aetherius solutions was pure pleasure. They helped us bring our iOS MVP application to life while constantly providing valuable ideas on how we can further improve our product"

Dmitry Zolotaryov

Ex Engineering Manager at Kin Social

"I worked with Aetherius Solutions team on an early-stage project. They were great at taking direction and executing a functional prototype of our concepts. Would love to work with his team again."

Katarina Ristić

Founder & COO, Znam Majstora

“We had a specific industry problem and wanted to help people solve it with a unique app. Our first plan was to test the MVP version in a couple of smaller cities in Serbia, but we didn't expect to encounter such positive reactions from users so quickly. Aetherius Solution’s team developed the first version in just 1 month with 0 bugs and issues!”

Nemanja Dimic

Founder & CEO, BIT Events

"Their team was very easy to work with, and they genuinely cared about the success of our project. They managed the project efficiently, kept us updated regularly, and always responded quickly to changes or feedback."