Implement in-app purchases for Kotlin Multiplatform

Name: Adapty
Brand: Adapty
Rating: 4.8 (236 reviews)

Integrate in-app purchases on iOS and Android using Adapty’s Kotlin Multiplatform (KMP) SDK. Handle receipts, track subscription status, and remove the need to build a backend. All the power in a single integration.

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Adapty.activate(AdaptyConfig.Builder("YOUR_PUBLIC_SDK_KEY").build())

// Make a purchase, Adapty handles the rest
Adapty.makePurchase(product)
    .onSuccess { purchaseResult ->
        if (purchaseResult is AdaptyPurchaseResult.Success)
			// successful purchase
    }
    .onError { error ->
        // handle the error
    }
    Adapty.activate(AdaptyConfig.Builder("YOUR_PUBLIC_SDK_KEY").build())
 
// Make a purchase, Adapty handles the rest
Adapty.makePurchase(product)
    .onSuccess { purchaseResult ->
        if (purchaseResult is AdaptyPurchaseResult.Success)
        // successful purchase
    }
    .onError { error ->
        // handle the error
    }
    

You don’t need to build a backend for Kotlin Multiplatform in-app purchases

Adapty’s SDK takes care of everything that usually lives on the server: receipt validation, subscription status, renewals, trials, and refunds. You just connect it once and get a working Kotlin Multiplatform in-app purchases setup.

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Why choose Adapty SDK?

Track subscription status across platforms

You’ll always know if the user has an active subscription across iOS and Android.

Validate receipts on the backend

No need to build your own validation as Adapty takes care of it.

Handle all kinds of subscription states

Free trials, upgrades, promo offers, family sharing, renewals, and more.

Scale on a enterprise-grade core

We ship updates often, keep the SDK stable, and run on >99.99% SLA.

Configuring platforms

Installing Adapty SDK

await adapty.activate(
'PUBLIC_SDK_KEY',
{
customerUserId: 'YOUR_USER_ID',
}
);

Processing purchasing events

Easy integration for Kotlin Multiplatform

Set up the Adapty SDK in a couple of hours and start working with in-app purchases on iOS and Android. Need help? Check out our full Kotlin Multiplatform IAP tutorial.

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Use 5 SDK methods to handle Kotlin Multiplatform IAP

import com.adapty.kmp.Adapty
import com.adapty.kmp.models.AdaptyPurchaseResult

Adapty.makePurchase(product = product).onSuccess { purchaseResult ->
    when (purchaseResult) {
        is AdaptyPurchaseResult.Success -> {
            val profile = purchaseResult.profile
            if (profile.accessLevels["YOUR_ACCESS_LEVEL"]?.isActive == true) {
                // Grant access to the paid features
            }
        }
        is AdaptyPurchaseResult.UserCanceled -> {
            // Handle the case where the user canceled the purchase
        }
        is AdaptyPurchaseResult.Pending -> {
            // Handle deferred purchases (e.g., the user will pay offline with cash)
        }
    }
}.onError { error ->
    // Handle the error
}

import com.adapty.kmp.Adapty
import com.adapty.kmp.models.AdaptyPurchaseResult
 
Adapty.makePurchase(product = product).onSuccess { purchaseResult ->
    when (purchaseResult) {
        is AdaptyPurchaseResult.Success -> {
            val profile = purchaseResult.profile
            if (profile.accessLevels["YOUR_ACCESS_LEVEL"]?.isActive == true) {
                // Grant access to the paid features
            }
        }
        is AdaptyPurchaseResult.UserCanceled -> {
            // Handle the case where the user canceled the purchase
        }
        is AdaptyPurchaseResult.Pending -> {
            // Handle deferred purchases (e.g., the user will pay offline with cash)
        }
    }
}.onError { error ->
    // Handle the error
}

import com.adapty.kmp.Adapty

Adapty.restorePurchases().onSuccess { profile ->
    if (profile.accessLevels["YOUR_ACCESS_LEVEL"]?.isActive == true) {
        // successful access restore
    }
}.onError { error ->
    // handle the error
}

import com.adapty.kmp.Adapty
 
Adapty.restorePurchases().onSuccess { profile ->
    if (profile.accessLevels["YOUR_ACCESS_LEVEL"]?.isActive == true) {
        // successful access restore
    }
}.onError { error ->
    // handle the error
}

import com.adapty.kmp.Adapty

Adapty.identify("YOUR_USER_ID") // Unique for each user
    .onSuccess {
        // successful identify
    }
    .onError { error ->
        // handle the error
    }

import com.adapty.kmp.Adapty
 
Adapty.identify("YOUR_USER_ID") // Unique for each user
    .onSuccess {
        // successful identify
    }
    .onError { error ->
        // handle the error
    }

import com.adapty.kmp.Adapty
import com.adapty.kmp.models.AdaptyProfile
import com.adapty.kmp.models.AdaptyProfileParameters

val builder = AdaptyProfileParameters.Builder()
    .withEmail("email@email.com")
    .withPhoneNumber("+18888888888")
    .withFirstName("John")
    .withLastName("Appleseed")
    .withGender(AdaptyProfile.Gender.FEMALE)
    .withBirthday(AdaptyProfile.Date(1970, 1, 3))
  
Adapty.updateProfile(builder.build())
    .onSuccess {
        // profile updated successfully
    }
    .onError { error ->
        // handle the error
    }

import com.adapty.kmp.Adapty
import com.adapty.kmp.models.AdaptyProfile
import com.adapty.kmp.models.AdaptyProfileParameters
 
val builder = AdaptyProfileParameters.Builder()
    .withEmail("[email protected]")
    .withPhoneNumber("+18888888888")
    .withFirstName("John")
    .withLastName("Appleseed")
    .withGender(AdaptyProfile.Gender.FEMALE)
    .withBirthday(AdaptyProfile.Date(1970, 1, 3))
  
Adapty.updateProfile(builder.build())
    .onSuccess {
        // profile updated successfully
    }
    .onError { error ->
        // handle the error
    }

import com.adapty.kmp.models.AdaptyProfileParameters

val builder = AdaptyProfileParameters.Builder()

// You can set your own custom attributes:
builder.withCustomAttribute("key1", "value1")

// To remove existing key, use .withRemovedCustomAttribute() method:
builder.withRemovedCustomAttribute("key2")

import com.adapty.kmp.models.AdaptyProfileParameters
 
val builder = AdaptyProfileParameters.Builder()
 
// You can set your own custom attributes:
builder.withCustomAttribute("key1", "value1")
 
// To remove existing key, use .withRemovedCustomAttribute() method:
builder.withRemovedCustomAttribute("key2")

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Adapty powers apps at every stage from indie to top publishers

“Migrating off RevenueCat was not an easy decision for us. We’ve chosen Adapty because we believe they are a better partner as we grow. Looking back it was the right call. Despite some hiccups, the Adapty team was always there to help us during the migration and afterward, and their support is top-notch. I recommend Adapty as a reliable partner.”

Cem Ortabas

Co-founder and CEO, HubX

“We’ve been working with Adapty since 2021 and I couldn’t be happier about it. We’ve tried other subscription management platforms in the past so I can compare. Adapty introduced numerous features over the years and constantly helped us grow. They have the best analytics on the market and all the integrations you can think of. If you looking to boost the revenue of your app, I definitely recommend Adapty.”

Chris Bick

Founder and CEO, Bickster

“We chose Adapty for its powerful paywall A/B testing capabilities, which helped us optimize our monetization strategy effectively. The user-friendly platform, flexible pricing, and exceptional customer support make Adapty a superior choice over competitors.”

Yalçın Özdemir

Founder & CEO, AppNation

"Adapty's platform makes it easy for non-developers to create and manage A/B tests, paywalls, product mix and pricing structure. They have a great external API that makes it easy to pass related events to other analytics tools like Amplitude and Mixpanel."

Kyle Smith

Head of data at Smitten Dating

“We’ve tested more than three hundred paywalls in the space of four months. Adapty allows testing basically any element of the paywall, and we took advantage of that. We’ve tested them all: products, title text, CTA buttons, images, videos etc. With Adapty’s A/B testing, we managed to double our monthly revenue. I wasn’t sure if one instrument could make such an impact, but I witnessed it myself.”

Roi Mulia

Founder & CEO, SocialKit