Mobile Development · head to head
Adjust vs Kotlin Multiplatform
Adjust
Mobile Development
Mobile measurement and fraud prevention, owned by the ad network AppLovin since 2021
- From
- On request
- Rated
- -
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: Adjust the vendor is owned by AppLovin, an advertising network and game publisher, so the party measuring campaign performance has a corporate interest in some of the inventory being measured.; 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.
- They diverge on capability: Adjust covers Install and event attribution, Kotlin Multiplatform covers Shared Kotlin logic.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Adjust and Kotlin Multiplatform actually diverge.
| Attribute | Adjust | Kotlin Multiplatform |
|---|---|---|
| Starting price | On request | Free |
| Pricing model | Per attributed install | Open source, no licence fee |
| Free tier | No | Yes |
| Platforms | iOS, Android, Web | iOS, Android, Windows, macOS, Linux, Web |
Identical on both: 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 Adjust
- Install and event attribution
- Fraud prevention
- Audience builder
- Automate
- Datascape reporting
- Data residency options
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.
Adjust
- An advertiser wanting fraud rejection applied before invoices are approved rather than clawed back afterwardsnot Kotlin Multiplatform
- European organisations that need attribution data held in the European Unionnot Kotlin Multiplatform
- Mid sized user acquisition teams that found the largest measurement partner's commitment level unaffordablenot Kotlin Multiplatform
- Games publishers running spend across many networks who need one reconciled performance viewnot Kotlin Multiplatform
Kotlin Multiplatform
- A company with existing separate native iOS and Android codebases wanting to stop duplicating business logic and networking codenot Adjust
- A team that wants shared logic but is not willing to compromise on fully native UI per platformnot Adjust
- An organisation already using Kotlin on the backend that wants to reuse the same models and validation on mobile clientsnot Adjust
- A team evaluating Compose Multiplatform for UI sharing but wanting the option to fall back to native UI per screennot Adjust
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Adjust
- The vendor is owned by AppLovin, an advertising network and game publisher, so the party measuring campaign performance has a corporate interest in some of the inventory being measured.
- Pricing is per attributed install on an annual commitment, meaning a successful campaign raises the measurement bill proportionally and overage above the commitment is charged at a worse rate.
- App Tracking Transparency removed deterministic iOS attribution for users who decline tracking, so a significant portion of iOS reporting is modelled and the interface does not always separate modelled from observed.
- Fraud prevention, audiences and the analytics layer are priced as separate modules, so a comparison against a competitor quote is only valid if module scope is matched line by line.
- Attribution history stays with the vendor, so switching partners breaks year on year comparisons and the cost of leaving rises with every year of data accumulated.
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
Adjust
On request- Adjust$undefined/year
- Annual commitment priced on attributed install volume, with fraud prevention and audiences as add on modules
- Terms are negotiated and not published; mid market discounting is generally more available than at the largest competitor
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 Adjust if
- You need install and event attribution.
- You work on iOS, Android, Web.
- You also want fraud prevention.
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.
Questions people ask
- Is Adjust or Kotlin Multiplatform better?
- Neither clearly leads. Adjust starts at On request and Kotlin Multiplatform at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Adjust or Kotlin Multiplatform?
- Kotlin Multiplatform has a free tier; the other does not. Paid plans start at On request for Adjust and Free for Kotlin Multiplatform.
- Does Adjust or Kotlin Multiplatform run on more platforms?
- Adjust runs on iOS, Android, Web. Kotlin Multiplatform runs on iOS, Android, Windows, macOS, Linux, Web.
- Can I use Kotlin Multiplatform for free?
- Yes. Kotlin Multiplatform has a free tier, so you can try it without paying. Adjust starts at On request.
- What is Adjust best used for?
- Adjust is most often used for an advertiser wanting fraud rejection applied before invoices are approved rather than clawed back afterwards, european organisations that need attribution data held in the european union, mid sized user acquisition teams that found the largest measurement partner's commitment level unaffordable, games publishers running spend across many networks who need one reconciled performance view. Of those, an advertiser wanting fraud rejection applied before invoices are approved rather than clawed back afterwards and european organisations that need attribution data held in the european union are not what Kotlin Multiplatform is typically brought in for.
- What can Adjust do that Kotlin Multiplatform cannot?
- Adjust covers Install and event attribution, Fraud prevention, Audience builder, Automate. Kotlin Multiplatform covers Shared Kotlin logic, Native UI retained, Compose Multiplatform (optional), IDE tooling.
Answered from the vendors’ own pages
Adjust: Does AppLovin ownership compromise measurement?
There is no public evidence of manipulation, but the structural conflict exists. Some advertisers exclude Adjust for that reason alone and it is a legitimate position.
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.
Adjust: How does it compare with AppsFlyer on price?
Generally more flexible for mid sized advertisers. Compare module scope, not headline rates, because attribution alone is rarely what you need.
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.
Adjust: Can data be kept in the EU?
Yes, European hosting is offered, which is a common reason for choosing it over United States based competitors.
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.
Related pages
More on Kotlin Multiplatform
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