Mobile Development · head to head
Kotlin Multiplatform vs PhpStorm
Kotlin Multiplatform
Mobile Development
JetBrains-funded technology for sharing Kotlin business logic across iOS, Android, web, desktop and server
- From
- Free
- Rated
- -
The short version
- Only Kotlin Multiplatform has a free tier, so it costs nothing to try first.
- Each has a real cost: Kotlin Multiplatform it shares logic, not UI, by default, so a team expecting a Flutter-style single UI codebase has to also adopt Compose Multiplatform, which is newer and less proven on iOS than on Android.; PhpStorm requires an ongoing paid subscription with no free tier for commercial use.
- They diverge on capability: Kotlin Multiplatform covers Shared Kotlin logic, PhpStorm covers PHP-aware coding assistance.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Kotlin Multiplatform and PhpStorm actually diverge.
| Attribute | Kotlin Multiplatform | PhpStorm |
|---|---|---|
| Starting price | Free | $24/month |
| Pricing model | Open source, no licence fee | subscription |
| Free tier | Yes | No |
| Platforms | iOS, Android, Windows, macOS, Linux, Web | windows, mac, linux |
| Category | Mobile Development | Developer Tools |
| Founded | Unknown | 2000 |
Identical on both: user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Kotlin Multiplatform
- Shared Kotlin logic
- Native UI retained
- Compose Multiplatform (optional)
- IDE tooling
- Gradle-based builds
- Incremental adoption
Only in PhpStorm
- PHP-aware coding assistance
- Integrated debugger
- Front-end tooling
- Database tools
- Version control integration
- Docker and remote deployment
What people use each for
The jobs each tool is most often brought in to do.
Kotlin Multiplatform
- A company with existing separate native iOS and Android codebases wanting to stop duplicating business logic and networking codenot PhpStorm
- A team that wants shared logic but is not willing to compromise on fully native UI per platformnot PhpStorm
- An organisation already using Kotlin on the backend that wants to reuse the same models and validation on mobile clientsnot PhpStorm
- A team evaluating Compose Multiplatform for UI sharing but wanting the option to fall back to native UI per screennot PhpStorm
PhpStorm
- Building PHP web applications with Laravel or Symfonynot Kotlin Multiplatform
- Debugging PHP code with Xdebugnot Kotlin Multiplatform
- Working across PHP, HTML, CSS, and JavaScript in one projectnot Kotlin Multiplatform
- Managing databases alongside application codenot Kotlin Multiplatform
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Kotlin Multiplatform
- It shares logic, not UI, by default, so a team expecting a Flutter-style single UI codebase has to also adopt Compose Multiplatform, which is newer and less proven on iOS than on Android.
- iOS interop relies on Kotlin/Native compiling to a framework consumed from Swift, and debugging across that boundary is more friction than debugging pure Swift or pure Kotlin.
- Because logic-sharing is the whole premise, teams still need genuine iOS and Android UI expertise on staff; it does not reduce the native skills bar the way a full cross-platform UI framework aims to.
- Build times and tooling maturity for multiplatform Gradle projects lag behind single-platform Kotlin or Swift projects, and multiplatform-specific build errors are less well documented.
- JetBrains funds it as part of the broader Kotlin investment, so its roadmap priority competes internally with IntelliJ, Android Studio and other JetBrains commitments rather than having dedicated headcount the way Flutter has at Google.
PhpStorm
- Requires an ongoing paid subscription with no free tier for commercial use.
- Heavier and slower to start than lightweight code editors.
- Some advanced framework-specific tooling requires additional configuration or plugins.
- Renewal pricing rises for lapsed subscriptions after the grace period.
Pricing, plan by plan
Kotlin Multiplatform
Free- Kotlin MultiplatformFree
- Apache 2.0 licensed, unlimited apps
- IDE tooling in the free Android Studio and free-tier IntelliJ IDEA Community
- No paid Kotlin Multiplatform edition exists
PhpStorm
$24/month- Individual$24/month
- Personal use license
- Access to PhpStorm
- Free for students and open-source maintainers
- Organization$34/month
- Business use license
- Access to PhpStorm
- Volume and renewal discounts
Which should you pick?
Choose Kotlin Multiplatform if
- You need shared kotlin logic.
- You want to start without paying.
- You work on iOS, Android, Windows, macOS, Linux, Web.
- You also want native ui retained.
Choose PhpStorm if
- You need php-aware coding assistance.
- You work on windows, mac, linux.
- You also want integrated debugger.
Questions people ask
- Is Kotlin Multiplatform or PhpStorm better?
- Neither clearly leads. Kotlin Multiplatform starts at Free and PhpStorm at $24/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Kotlin Multiplatform or PhpStorm?
- Kotlin Multiplatform has a free tier; the other does not. Paid plans start at Free for Kotlin Multiplatform and $24/month for PhpStorm.
- Does Kotlin Multiplatform or PhpStorm run on more platforms?
- Kotlin Multiplatform runs on iOS, Android, Windows, macOS, Linux, Web. PhpStorm runs on windows, mac, linux.
- Can I use Kotlin Multiplatform for free?
- Yes. Kotlin Multiplatform has a free tier, so you can try it without paying. PhpStorm starts at $24/month.
- What is Kotlin Multiplatform best used for?
- Kotlin Multiplatform is most often used for a company with existing separate native ios and android codebases wanting to stop duplicating business logic and networking code, a team that wants shared logic but is not willing to compromise on fully native ui per platform, an organisation already using kotlin on the backend that wants to reuse the same models and validation on mobile clients, a team evaluating compose multiplatform for ui sharing but wanting the option to fall back to native ui per screen. Of those, a company with existing separate native ios and android codebases wanting to stop duplicating business logic and networking code and a team that wants shared logic but is not willing to compromise on fully native ui per platform are not what PhpStorm is typically brought in for.
- What can Kotlin Multiplatform do that PhpStorm cannot?
- Kotlin Multiplatform covers Shared Kotlin logic, Native UI retained, Compose Multiplatform (optional), IDE tooling. PhpStorm covers PHP-aware coding assistance, Integrated debugger, Front-end tooling, Database tools.
Answered from the vendors’ own pages
Kotlin Multiplatform: Does Kotlin Multiplatform replace my native UI code?
Not by default. It shares business logic and data layers; UI stays native per platform unless you separately adopt Compose Multiplatform.
PhpStorm: How much does PhpStorm cost?
PhpStorm is sold via JetBrains Toolbox subscription starting around $24/month for individuals and $34/month for organizations, with free licenses for students and open-source maintainers.
SourceKotlin Multiplatform: Is there a paid version?
No. It is Apache 2.0 licensed and free, funded by JetBrains as part of the Kotlin project.
PhpStorm: Is there a free trial?
JetBrains offers a free trial of PhpStorm so developers can test it before subscribing.
SourceKotlin Multiplatform: Do I need Compose Multiplatform to use it?
No, they are separate. You can share only logic and keep fully native UI on each platform indefinitely.
PhpStorm: What platforms does PhpStorm support?
PhpStorm is a desktop IDE available on Windows, macOS, and Linux via JetBrains Toolbox.
SourceRelated pages
More on Kotlin Multiplatform
Other head to heads
- Kotlin Multiplatform vs .NET MAUI
- Kotlin Multiplatform vs Flutter
- Kotlin Multiplatform vs React Native
- Kotlin Multiplatform vs Emerge Tools
- Kotlin Multiplatform vs Sencha
- Kotlin Multiplatform vs Capacitor
- Kotlin Multiplatform vs RevenueCat
- Kotlin Multiplatform vs Superwall
- Kotlin Multiplatform vs Adapty
- Kotlin Multiplatform vs EAS Build
- Kotlin Multiplatform vs Fastlane
- Kotlin Multiplatform vs Adjust
- Kotlin Multiplatform vs Appcircle
- Kotlin Multiplatform vs Android Studio
- Kotlin Multiplatform vs Ionic
- Kotlin Multiplatform vs Visual Studio Code
- Kotlin Multiplatform vs Sweep
- Kotlin Multiplatform vs Eclipse IDE
- Kotlin Multiplatform vs Cody
- Kotlin Multiplatform vs Deep Code
- Kotlin Multiplatform vs CLion
- Kotlin Multiplatform vs Ona (formerly Gitpod)
- Kotlin Multiplatform vs GNU Emacs
- Kotlin Multiplatform vs Earthly
- Kotlin Multiplatform vs Pants Build
- Kotlin Multiplatform vs Atlantis
- Kotlin Multiplatform vs Coder
- Kotlin Multiplatform vs GitLab CI/CD
- Kotlin Multiplatform vs HCP Terraform
- Kotlin Multiplatform vs Helm
- Kotlin Multiplatform vs Jitsu
- Kotlin Multiplatform vs Notepad++
- Kotlin Multiplatform vs Prettier
- PhpStorm vs .NET MAUI
- PhpStorm vs Flutter
- PhpStorm vs React Native
- PhpStorm vs Emerge Tools
- PhpStorm vs Sencha
- PhpStorm vs Capacitor
- PhpStorm vs RevenueCat
- PhpStorm vs Superwall
- PhpStorm vs Adapty
- PhpStorm vs EAS Build
- PhpStorm vs Fastlane
- PhpStorm vs Adjust
- PhpStorm vs Appcircle
- PhpStorm vs Android Studio
- PhpStorm vs Ionic
- PhpStorm vs Visual Studio Code
- PhpStorm vs Sweep
- PhpStorm vs Eclipse IDE
- PhpStorm vs Cody
- PhpStorm vs Deep Code
- PhpStorm vs CLion
- PhpStorm vs Ona (formerly Gitpod)
- PhpStorm vs GNU Emacs
- PhpStorm vs Earthly
- PhpStorm vs Pants Build
- PhpStorm vs Atlantis
- PhpStorm vs Coder
- PhpStorm vs GitLab CI/CD
- PhpStorm vs HCP Terraform
- PhpStorm vs Helm
- PhpStorm vs Jitsu
- PhpStorm vs Notepad++
- PhpStorm vs Prettier