Kotlin Multiplatform & Compose Multiplatform Specialists
We were building with Kotlin Multiplatform before it was the obvious choice.

Kotlin Multiplatform vs Native + AI: The Questions Teams Ask
Should Enterprises Adopt Kotlin Multiplatform in the Age of AI?
These are the questions we hear the most from enterprise teams exploring Kotlin Multiplatform.
AI can generate code, but senior engineers still have to design, review, integrate, and maintain it. With two native codebases, that overhead doubles permanently: every feature, every bug fix, every platform update, year after year.

Kotlin Multiplatform has been production-stable since 2023. Companies like Netflix, VMware, and Cash App run it at scale. The real risk is adopting it without a team that has shipped KMP under real production constraints.
We’ve migrated apps with 80,000+ active users, years of accumulated technical debt, and little to no documentation. Codebase age and complexity aren’t blockers, but lack of migration experience is.

In theory, yes. In practice, this is where most teams stall. iOS developers learning Kotlin shared logic and Android developers adapting to Compose for iOS without prior KMP production experience usually hit serious delivery slowdowns by sprint four.
Pioneers in KMP
We were among the early adopters of Kotlin Multiplatform in production mobile apps.
Over time, this allowed us to build strong internal expertise and proven patterns that allow our partners to rely on us, whether they’re starting a KMP project from scratch or migrating an existing app.

Case Study
What a real KMP migration looks like
80,000 active users, a year's worth of accumulated bugs, and a React Native codebase that couldn't scale anymore.
Healthcare
React Native → Kotlin Multiplatform + Compose Multiplatform

Less memory usage
Bugs post-launch
New downloads
80K users on a React Native app plagued by performance issues, a bug backlog that had persisted for over a year, and images stored in device memory instead of a server, making crashes frequent and App Store ratings unstable.
Full rewrite from React Native to KMP, sharing business logic across platforms while building native UI separately with Compose Multiplatform. Complete backend optimization including moving all image storage server-side.
72% reduction in memory usage. Zero bugs at launch. 5,000 new downloads after App Store ranking improved from performance gains. Users said it felt like a completely new app.

We use them for codebase analysis, implementation, refactoring, test generation, debugging, and documentation.
AI helps us complete prototyping, coding, testing, and documentation faster across the entire development process.
We use them for codebase analysis, implementation, refactoring, test generation, debugging, and documentation.
This Is How Our Engineers
Build KMP Apps
Here's the production-ready Kotlin Multiplatform template they built. Clean architecture, shared business logic, Firebase, Ktor.

How We Work
What working with Aetherius looks like
KMP is production-ready
Who's already running it at scale
KMP/CMP adoption among professional developers more than doubled in a single year: from 7% to 18%. These are the teams that moved early.

What our clients say
“Thanks to Aetherius, the client met deadlines, maintained quality, and handled multiple projects without slowing down development. The team managed the project well and communicated through virtual meetings. The client also praised the developers' seniority and their quick integration.”

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

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

Ready to ship KMP the right way?
Just a conversation about your setup and whether we're the right fit.
FAQ
Kotlin Multiplatform is a good fit when Android and iOS applications duplicate substantial business logic but still require native platform capabilities. It can reduce duplicated development and maintenance without requiring the entire application to be rewritten as a fully cross-platform product.
See the latest data on Kotlin Multiplatform adoption in enterprise applications.
Native development may be better when an application relies heavily on platform-specific APIs, requires significantly different Android and iOS experiences, or already has mature native teams and stable codebases. In these cases, introducing shared code may create more complexity than value.
Platform APIs, permissions, lifecycle behavior, hardware integrations and distinct user experiences should usually remain native. Business logic, networking, data models, and validation are stronger candidates for sharing.
Our comparison of KMP and CMP architecture explains how the appropriate sharing boundary changes between projects.
Yes. An incremental migration allows teams to move selected modules into shared code while keeping the existing applications releasable. Clear module boundaries, regression testing and separate ownership of migration and roadmap work help prevent the migration from blocking feature delivery.
Read the lessons from a real KMP-to-CMP migration.
Start by reviewing the current architecture, duplicated logic, platform dependencies, test coverage and modules with the highest maintenance cost. The assessment should identify what should be shared, what should remain native and which migration sequence introduces the least delivery risk.
Our AI-assisted KMP-to-CMP migration workflow shows how existing architecture and native dependencies affect implementation.
KMP creates a shared layer that requires clear ownership across Android and iOS teams. Teams need agreed responsibilities for architecture decisions, code reviews, testing and platform-specific implementations. Without clear ownership, the shared module can become a new development bottleneck.
The main factors are codebase size, architecture quality, test coverage, native integrations, platform differences and the amount of code or UI being shared. A reliable estimate requires reviewing the existing application and defining the migration scope before implementation begins.
Use the Project Estimator to provide the initial project context.
External engineers should work within the company’s existing codebase, communication channels, review process and release workflow. Responsibilities and knowledge-transfer expectations should be defined early so the internal team retains long-term ownership.
Learn what to evaluate when choosing a nearshore mobile development partner.



