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Kotlin Multiplatform

Write shared code once in Kotlin for Android, iOS, and desktop applications

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Vendor
JetBrains
Also known as
kotlin-multiplatform

What is Kotlin Multiplatform?

A framework for building applications that run on Android, iOS, desktop, and web platforms, allowing developers to share code across platforms while choosing between shared UI through Compose or platform-specific native implementations

Independently observed

What Kotlin Multiplatform does

The capabilities that matter for mobile app frameworks, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.

Core
Target platforms
Android, iOS, desktop, and web
Approach
Multiplatform shared logic
Primary language
Kotlin
Rendering
Renders true native UI
✓
DX
Hot reload
✓
TypeScript-first
✗
Delivery
Over-the-air code push
-
Portability
Single codebase, multiple platforms
✓
Desktop support
✓
Builds for web
✓
Capability
Native API access
Plugin / bridged
Ecosystem
Bundled UI component library
✓
Independently observed

Platform & deployment

Independently observed
Platforms
  • iOS
  • macOS
  • Linux
  • Android
  • Windows

Integrations (8)

Independently observed
build_tool
  • Gradle•
  • Maven•
ide
  • Xcode•
  • IntelliJ IDEA•
  • Android Studio•
package_manager
  • CocoaPods•
  • Swift Package Manager•
framework
  • Spring Framework•

Security & compliance

Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality

Kotlin Multiplatform FAQ

Common questions about Kotlin Multiplatform, answered from independent, dated evidence.

What is Kotlin Multiplatform?

A framework for building applications that run on Android, iOS, desktop, and web platforms, allowing developers to share code across platforms while choosing between shared UI through Compose or platform-specific native implementations It is indexed under Mobile App Frameworks.

Source: https://kotlinlang.org/docs/multiplatform.html

What platforms does Kotlin Multiplatform support?

Kotlin Multiplatform supports the web, iOS and Android. Platforms we have not confirmed are simply not listed here rather than ruled out.

Source: https://kotlinlang.org/docs/multiplatform.html

Is Kotlin Multiplatform open source?

Yes. Kotlin Multiplatform is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.

Source: https://github.com/jetbrains/compose-multiplatform

Kotlin Multiplatform alternatives

Other mobile app frameworks we track, ranked by the same independent score.

All Kotlin Multiplatform alternatives, ranked →

Compare Kotlin Multiplatform

Side by side against other mobile app frameworks, attribute by attribute, with a source on every value.

Independent · unbought · dated

The vioscaleAI score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Kotlin Multiplatform, not the verdict.

Balanced composite 56 / 100
medium · 62%
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Capabilities810.086.7✓
Release cadence930.076.2✓
Development activity500.126.0✓
Stars810.032.7✓
Dependent projects200.081.6✓
Integrations270.051.5✓
Security posture50.090.0-
Package downloads00.170.0-
Security score00.050.0-
Developer Q&A activity00.080.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Activity

AttributeValueEvidence
Commits last 30d37mediumsource · 2026-10-15 · 65%

Adoption

AttributeValueEvidence
Github stars19,421highsource · 2026-10-15 · 90%
Dependent repos14highsource · 2026-08-26 · 85%

Content

AttributeValueEvidence
Faq3 itemsmediumsource · 2026-09-10 · 72%

Features

AttributeValueEvidence
CapabilitiesTargets: Android, iOS, desktop, and web · Approach: multiplatform · Language: Kotlin · Hot reload: Yes · Web target: Yes · Native widgets: Yesmediumsource · 2026-10-15 · 60%

Integrations

AttributeValueEvidence
Count8mediumsource · 2026-10-15 · 60%

Language

AttributeValueEvidence
PrimaryKotlinhighsource · 2026-10-15 · 90%

License

AttributeValueEvidence
SpdxApache-2.0highsource · 2026-10-15 · 95%

Release

AttributeValueEvidence
History20 itemsmediumsource · 2026-10-15 · 70%
Cadence days13mediumsource · 2026-10-15 · 70%

Security

AttributeValueEvidence
Disclosure policyYesmediumsource · 2026-08-16 · 60%
VulnerabilitiesCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.jetbrains.compose.foundation%3Afoundation&per_page=100 · Last 12m: 0highsource · 2026-08-26 · 90%
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