Mobile

Kotlin app development

Kotlin development for Android apps and beyond, from a language that's more concise and safer than Java without sacrificing performance.

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Sketch: large phone with app grid, one app circled

What is Kotlin?

Kotlin is a modern, statically-typed language that's Google's recommended choice for Android development and increasingly used for backend and multiplatform code. Codiot builds Android apps in Kotlin as a default, and uses Kotlin Multiplatform where sharing business logic across Android, iOS, and backend genuinely reduces duplicate work.

What we build

Real projects, not a tech-stack badge.

Native Android apps

Kotlin as the default language for all new native Android development.

Kotlin Multiplatform projects

Shared business logic across Android, iOS, and backend where it reduces duplication without hurting native feel.

Backend services in Kotlin

Server-side Kotlin for teams that want language consistency across their Android and backend teams.

Legacy Java to Kotlin migrations

Incremental migration of existing Android codebases from Java to Kotlin.

The honest take

When this is the right choice, and when it isn't.

Good for

Kotlin is the right default for any new native Android project, and Kotlin Multiplatform is worth considering when your team wants to share business logic (not UI) across platforms without a full cross-platform framework.

When not to use it

If your team is deeply invested in an existing Java Android codebase with no near-term migration plans, or you need a fully shared UI layer across platforms, Kotlin alone (without Flutter) may not solve your cross-platform needs.

Kotlin CoroutinesJetpack ComposeKotlin Multiplatform Mobile (KMM)Ktor for backend services

FAQ

Common questions, answered plainly.

Kotlin vs Java for Android?

Kotlin, for nearly every new project. It's more concise, has better null-safety, and is Google's officially recommended language, with the majority of new Android tooling built around it.

What is Kotlin Multiplatform?

Kotlin Multiplatform lets you share business logic (not UI) across Android, iOS, and backend code in a single language, reducing duplicated logic while keeping native UI on each platform.

How much does Kotlin development cost?

Costs align with Android app development generally and depend on scope. We quote a fixed estimate after discovery.

Can you migrate our Java codebase to Kotlin?

Yes, this is typically done incrementally, since Kotlin and Java interoperate well, rather than as a risky full rewrite.

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Got a project in mind?

Tell us what you're building. We'll reply within two business days with an honest take on scope, timeline, and cost.

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