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Mobile Development · head to head

Codemagic vs Kotlin Multiplatform

Codemagic logo

Codemagic

Mobile Development

CI/CD built for Flutter and mobile apps

From
Free
Rated
-
Full reviewWebsite
Kotlin Multiplatform logo

Kotlin Multiplatform

Mobile Development

JetBrains-funded technology for sharing Kotlin business logic across iOS, Android, web, desktop and server

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Codemagic minute-based pricing opacity: exact costs for concurrent builds become difficult to predict at scale without calculator; 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.
  • Prices and features above were last checked on 2 September 2026.

Where they differ

Only the attributes on which Codemagic and Kotlin Multiplatform actually diverge.

Attributes where Codemagic and Kotlin Multiplatform differ
AttributeCodemagicKotlin Multiplatform
Pricing modelusage-based|subscriptionOpen source, no licence fee
PlatformsWebiOS, Android, Windows, macOS, Linux, Web

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Mobile Development).

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 Codemagic

Nothing recorded that Kotlin Multiplatform does not also cover.

Only in Kotlin Multiplatform

  • Shared Kotlin logic
  • Native UI retained
  • Compose Multiplatform (optional)
  • IDE tooling
  • Gradle-based builds
  • Incremental adoption

What people use each for

The jobs each tool is most often brought in to do.

Codemagic

  • Mobile CI/CD pipelines for iOS and Androidnot Kotlin Multiplatform
  • React Native CodePush over-the-air update distributionnot Kotlin Multiplatform
  • Enterprise multi-team CI/CD at scalenot Kotlin Multiplatform

Kotlin Multiplatform

  • A company with existing separate native iOS and Android codebases wanting to stop duplicating business logic and networking codenot Codemagic
  • A team that wants shared logic but is not willing to compromise on fully native UI per platformnot Codemagic
  • An organisation already using Kotlin on the backend that wants to reuse the same models and validation on mobile clientsnot Codemagic
  • A team evaluating Compose Multiplatform for UI sharing but wanting the option to fall back to native UI per screennot Codemagic

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Codemagic

  • Minute-based pricing opacity: exact costs for concurrent builds become difficult to predict at scale without calculator
  • Free tier severely limited to 500 minutes/month with single parallel build vs. competitors offering more generous free allocations
  • M1/M2/M4 pricing variance creates complexity; customers must right-size machine type upfront without clear performance guidance
  • Additional concurrency is expensive at $49/month per concurrent build, potentially costing $588/year per extra slot

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.

Pricing, plan by plan

Codemagic

Free
  • Pay as You Go$undefined/mo
  • M2 Fixed Plan$3990/year
  • M4 Fixed Plan$5400/year
  • M4 Max Fixed Plan$9000/year

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

Which should you pick?

Choose Codemagic if

  • You want to start without paying.
Codemagic review

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.
Kotlin Multiplatform review

Questions people ask

Is Codemagic or Kotlin Multiplatform better?
Neither clearly leads. Codemagic starts at Free and Kotlin Multiplatform at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Codemagic or Kotlin Multiplatform?
Codemagic starts at Free and Kotlin Multiplatform at Free.
Does Codemagic or Kotlin Multiplatform run on more platforms?
Codemagic runs on Web. Kotlin Multiplatform runs on iOS, Android, Windows, macOS, Linux, Web.
Can I use Codemagic for free?
Both have a free tier, so you can try either at no cost before committing.
What is Codemagic best used for?
Codemagic is most often used for mobile ci/cd pipelines for ios and android, react native codepush over-the-air update distribution, enterprise multi-team ci/cd at scale. Of those, mobile ci/cd pipelines for ios and android and react native codepush over-the-air update distribution are not what Kotlin Multiplatform is typically brought in for.
What can Codemagic do that Kotlin Multiplatform cannot?
Kotlin Multiplatform covers Shared Kotlin logic, Native UI retained, Compose Multiplatform (optional), IDE tooling.

Answered from the vendors’ own pages

Codemagic: How much does it cost to add more parallel builds?

Each additional concurrent build costs $49/month ($588/year). Fixed-plan customers can purchase additional concurrency at $1,500–$3,000/year depending on tier.

Source
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.

Codemagic: Does Codemagic offer a free tier?

Yes. The free tier includes 500 free M2 build minutes monthly with 1 parallel build maximum, then paid usage kicks in.

Source
Kotlin Multiplatform: Is there a paid version?

No. It is Apache 2.0 licensed and free, funded by JetBrains as part of the Kotlin project.

Codemagic: What is the difference between monthly billing and annual fixed plans?

Pay-as-you-go charges per minute of build time. Fixed annual plans provide unlimited minutes on a specific machine type (M2, M4, or M4 Max) for one upfront yearly payment plus the option to purchase additional concurrency.

Source
Kotlin 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.

Codemagic: Is there a limit to monthly users on React Native CodePush?

Yes. On the fixed-price CodePush plan, users are billed per 100,000 Monthly Active Users (MAU). Overage pricing is $1 per 2,500 installs on pay-as-you-go or a higher per-instance fee on fixed plans.

Source
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