# Compose Multiplatform vs Qt

**Leader by Vioscale score:** Compose Multiplatform

| Attribute | Compose Multiplatform | Qt |
|---|---|---|
| **Vioscale score** | 77.9 (63% (medium)) | 38.5 (57% (medium)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 47,093 | - |
| adoption.github_stars | 53,351 | - |
| deployment.options | `{"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | An open-source, declarative UI framework for Kotlin that enables sharing code across multiple platforms. Built on Jetpack Compose and Kotlin Multiplatform, developed by JetBrains. | Qt is a comprehensive platform providing libraries, frameworks, and development tools for creating user interfaces and applications that run consistently across multiple platforms. It enables developers to design, build, test, and maintain software from concept through deployment using a unified toolset. |
| features.capabilities | `{"targets":"Android, iOS, Windows, macOS, Linux, Web","approach":"native_declarative","language":"Kotlin","hot_reload":true,"web_target":true,"native_widgets":true,"desktop_support":true,"official_ui_kit":true,"single_codebase":true,"typescript_first":false,"native_api_access":"full"}` | `{"targets":"Embedded systems, microcontrollers, iOS, Windows, macOS, web","approach":"multiplatform","language":"C++, QML","hot_reload":true,"web_target":true,"native_widgets":true,"desktop_support":true,"official_ui_kit":true,"single_codebase":true,"typescript_first":false,"native_api_access":"full"}` |
| integrations.count | - | 1 |
| integrations.list | - | `[{"name":"Figma"}]` |
| language.primary | Kotlin | - |
| market.availability | - | `{"hqCountry":"FI","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"ios":true,"mac":true,"web":true,"linux":true,"android":true,"windows":true}` | `{"cli":true,"ios":true,"mac":true,"web":true,"windows":true}` |
| pricing | `{"type":"open_source","summary":"Open-source, free","freeTier":true,"sourceUrl":"https://www.jetbrains.com/lp/compose-multiplatform/","retrievedAt":"2026-08-13T18:17:40.704Z"}` | `{"type":"quote","plans":[{"free":false,"name":"Extended Security Maintenance","summary":"Contact sales. Developer License required.","features":["Critical vulnerability patches","Limited to Qt libraries only","3-year availability"],"commitment":"annual","description":"Critical security patches and maintenance for supported Qt Framework releases after end-of-support","contactSales":true},{"free":false,"name":"Premium Security Maintenance","summary":"Contact sales","features":["Environment-specific patches","Patch analysis and porting","For customers with ESM","3-year maximum"],"commitment":"annual","description":"Extended security maintenance customized for specific Qt versions and platforms beyond standard ESM offering","contactSales":true}],"summary":"Contact sales. Free tier for open source development; Developer License required for commercial use.","freeTier":true,"sourceUrl":"https://www.qt.io","retrievedAt":"2026-08-16T21:35:37.793Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | quote |
| pricing.price_level | free | low |
| pricing.transparent | yes | no |
| release.cadence_days | 9 | - |
| release.history | `[{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.20-RC2","date":"2026-08-26T10:02:56Z","type":"prerelease","version":"v2.4.20-RC2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.20-RC","date":"2026-08-12T09:36:59Z","type":"prerelease","version":"v2.4.20-RC"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.20-Beta2","date":"2026-07-22T11:41:10Z","type":"prerelease","version":"v2.4.20-Beta2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.10","date":"2026-07-14T10:47:27Z","type":"stable","version":"v2.4.10"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.10-RC2","date":"2026-07-07T12:46:47Z","type":"prerelease","version":"v2.4.10-RC2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.10-RC","date":"2026-06-25T09:46:40Z","type":"prerelease","version":"v2.4.10-RC"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.20-Beta1","date":"2026-06-24T13:16:57Z","type":"prerelease","version":"v2.4.20-Beta1"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.0","date":"2026-06-03T09:31:47Z","type":"stable","version":"v2.4.0"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.0-RC2","date":"2026-05-27T12:43:02Z","type":"prerelease","version":"v2.4.0-RC2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.0-RC","date":"2026-05-13T12:30:38Z","type":"prerelease","version":"v2.4.0-RC"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.0-Beta2","date":"2026-04-22T09:52:15Z","type":"prerelease","version":"v2.4.0-Beta2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.21","date":"2026-04-23T10:11:51Z","type":"stable","version":"v2.3.21"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.21-RC2","date":"2026-04-16T13:59:12Z","type":"prerelease","version":"v2.3.21-RC2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.21-RC","date":"2026-04-07T12:24:41Z","type":"prerelease","version":"v2.3.21-RC"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.0-Beta1","date":"2026-03-31T13:10:43Z","type":"prerelease","version":"v2.4.0-Beta1"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.20","date":"2026-03-16T09:37:25Z","type":"stable","version":"v2.3.20"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.20-RC3","date":"2026-03-10T12:54:01Z","type":"prerelease","version":"v2.3.20-RC3"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.20-RC2","date":"2026-03-03T11:47:42Z","type":"prerelease","version":"v2.3.20-RC2"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.20-RC","date":"2026-02-19T13:11:27Z","type":"prerelease","version":"v2.3.20-RC"},{"url":"https://github.com/JetBrains/kotlin/releases/tag/v2.3.10","date":"2026-02-05T11:48:04Z","type":"stable","version":"v2.3.10"}]` | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.iso27001 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.jetbrains.kotlin%3Akotlin-stdlib-jdk8&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Mobile App Frameworks)

| Capability | Compose Multiplatform | Qt |
|---|:--:|:--:|
| **Core** |  |  |
| Target platforms | Android, iOS, Windows, macOS, Linux, Web | Embedded systems, microcontrollers, iOS, Windows, macOS, web |
| Approach | Native declarative | Multiplatform shared logic |
| Primary language | Kotlin | C++, QML |
| **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 | Full native | Full native |
| **Ecosystem** |  |  |
| Bundled UI component library | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T16:31:49.457Z. "-" = undocumented, not absent.*