diff --git a/config/detekt/detekt.yml b/config/detekt/detekt.yml
index 4d49482a..679c2a9d 100644
--- a/config/detekt/detekt.yml
+++ b/config/detekt/detekt.yml
@@ -51,7 +51,7 @@ output-reports:
   # - 'SarifOutputReport'
 
 comments:
-  active: false
+  active: true
   AbsentOrWrongFileLicense:
     active: false
     licenseTemplateFile: 'license.template'
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/CacheFetchPolicy.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/CacheFetchPolicy.kt
index 99d59c42..d7745a33 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/CacheFetchPolicy.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/CacheFetchPolicy.kt
@@ -30,6 +30,9 @@ public expect enum class CacheFetchPolicy {
     ;
 
     public companion object {
+        /**
+         * Returns the default policy when no policy is provided.
+         */
         public fun default(): CacheFetchPolicy
     }
 }
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/DangerousSettings.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/DangerousSettings.kt
index f4036a01..b54be06e 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/DangerousSettings.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/DangerousSettings.kt
@@ -1,5 +1,14 @@
 package io.shortway.kobankat
 
+/**
+ * Only use a Dangerous Setting if suggested by RevenueCat support team.
+ */
 public data class DangerousSettings(
+    /**
+     * Disable or enable syncing purchases automatically. If this is disabled, RevenueCat will not
+     * sync any purchase automatically, and you will have to call [syncPurchases] whenever a new
+     * purchase is completed in order to send it to the RevenueCat's backend. Auto syncing of
+     * purchases is enabled by default.
+     */
     public val autoSyncPurchases: Boolean,
 )
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfo.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfo.kt
index 21886872..ccf097c7 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfo.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfo.kt
@@ -1,27 +1,92 @@
 package io.shortway.kobankat
 
+/**
+ * This object gives you access to all of the information about the status of a user's entitlements.
+ */
 public expect class EntitlementInfo
 
+/**
+ * The entitlement identifier configured in the RevenueCat dashboard.
+ */
 public expect val EntitlementInfo.identifier: String
+
+/**
+ * True if the user has access to this entitlement.
+ */
 public expect val EntitlementInfo.isActive: Boolean
+
+/**
+ * True if the underlying subscription is set to renew at the end of the billing period
+ * (expirationDate). Will always be True if entitlement is for lifetime access.
+ */
 public expect val EntitlementInfo.willRenew: Boolean
+
+/**
+ * The last period type this entitlement was in.
+ */
 public expect val EntitlementInfo.periodType: PeriodType
+
 /**
- * Nullable on iOS only not on Android.
+ * Nullable on iOS only not on Android. The latest purchase or renewal date for the entitlement,
+ * in millis since the Unix epoch.
  */
 public expect val EntitlementInfo.latestPurchaseDateMillis: Long?
+
 /**
- * Nullable on iOS only not on Android.
+ * Nullable on iOS only not on Android. The first date this entitlement was purchased in millis
+ * since the Unix epoch.
  */
 public expect val EntitlementInfo.originalPurchaseDateMillis: Long?
+
+/**
+ * The expiration date for the entitlement, can be `null` for lifetime access. If the [periodType]
+ * is [PeriodType.TRIAL], this is the trial expiration date.
+ */
 public expect val EntitlementInfo.expirationDateMillis: Long?
+
+/**
+ * The store where this entitlement was unlocked from.
+ */
 public expect val EntitlementInfo.store: Store
+
+/**
+ * The product identifier that unlocked this entitlement.
+ *  * For Google subscriptions, this is the subscription ID.
+ *  * For Amazon subscriptions, this is the `termSku`.
+ *  * For INAPP purchases, this is simply the `productId`.
+ */
 public expect val EntitlementInfo.productIdentifier: String
+
+/**
+ * Play Store only. The base plan identifier that unlocked this entitlement.
+ */
 public expect val EntitlementInfo.productPlanIdentifier: String?
+
+/**
+ * False if this entitlement is unlocked via a production purchase.
+ */
 public expect val EntitlementInfo.isSandbox: Boolean
+
+/**
+ * The date an unsubscribe was detected. Can be `null`.
+ *
+ * Note: Entitlement may still be active even if user has unsubscribed. Check the [isActive]
+ * property.
+ */
 public expect val EntitlementInfo.unsubscribeDetectedAtMillis: Long?
+
+/**
+ * The date a billing issue was detected in millis since the Unix epoch. Can be `null` if there is
+ * no billing issue or an issue has been resolved. Note: Entitlement may still be active even if
+ * there is a billing issue. Check the `isActive` property.
+ */
 public expect val EntitlementInfo.billingIssueDetectedAtMillis: Long?
 public expect val EntitlementInfo.ownershipType: OwnershipType
+
+/**
+ * If entitlement verification was enabled, the result of that verification. If not,
+ * [VerificationResult.NOT_REQUESTED].
+ */
 public expect val EntitlementInfo.verification: VerificationResult
 
 /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfos.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfos.kt
index b5cf9515..fc2ff6b9 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfos.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementInfos.kt
@@ -1,8 +1,20 @@
 package io.shortway.kobankat
 
+/**
+ * This class contains all the entitlements associated to the user.
+ */
 public expect class EntitlementInfos
 
+/**
+ * Map of all EntitlementInfo [EntitlementInfo] objects (active and inactive) keyed by entitlement
+ * identifier.
+ */
 public expect val EntitlementInfos.all: Map<String, EntitlementInfo>
+
+/**
+ * If entitlement verification was enabled, the result of that verification. If not,
+ * [VerificationResult.NOT_REQUESTED].
+ */
 public expect val EntitlementInfos.verification: VerificationResult
 
 /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementVerificationMode.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementVerificationMode.kt
index 3032c1a1..dad8f927 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementVerificationMode.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/EntitlementVerificationMode.kt
@@ -1,6 +1,16 @@
 package io.shortway.kobankat
 
+/**
+ * Verification strictness levels for [EntitlementInfo].
+ */
 public enum class EntitlementVerificationMode {
+    /**
+     * The SDK will not perform any entitlement verification.
+     */
     DISABLED,
+
+    /**
+     * Enable entitlement verification.
+     */
     INFORMATIONAL,
 }
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/LogHandler.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/LogHandler.kt
index e5996348..fd460b55 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/LogHandler.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/LogHandler.kt
@@ -6,9 +6,28 @@ package io.shortway.kobankat
  * @see PurchasesFactory.logHandler
  */
 public expect interface LogHandler {
+    /**
+     * Log a message at the [LogLevel.VERBOSE] level.
+     */
     public fun v(tag: String, msg: String)
+
+    /**
+     * Log a message at the [LogLevel.DEBUG] level.
+     */
     public fun d(tag: String, msg: String)
+
+    /**
+     * Log a message at the [LogLevel.INFO] level.
+     */
     public fun i(tag: String, msg: String)
+
+    /**
+     * Log a message at the [LogLevel.WARN] level.
+     */
     public fun w(tag: String, msg: String)
+
+    /**
+     * Log a message at the [LogLevel.ERROR] level.
+     */
     public fun e(tag: String, msg: String, throwable: Throwable?)
 }
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/LogLevel.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/LogLevel.kt
index 306899d3..f78c753c 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/LogLevel.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/LogLevel.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat
 
+/**
+ * The level to log at.
+ */
 public expect enum class LogLevel {
     VERBOSE,
     DEBUG,
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/ProductType.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/ProductType.kt
index 2035dd0a..368897c0 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/ProductType.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/ProductType.kt
@@ -1,7 +1,21 @@
 package io.shortway.kobankat
 
+/**
+ * Possible product types.
+ */
 public expect enum class ProductType {
+    /**
+     * A subscription product.
+     */
     SUBS,
+
+    /**
+     * An in-app purchase product.
+     */
     INAPP,
+
+    /**
+     * The product type could not be determined.
+     */
     UNKNOWN,
 }
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesConfiguration.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesConfiguration.kt
index bc0c14d7..ecdf0337 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesConfiguration.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesConfiguration.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat
 
+/**
+ * Configuration of the SDK.
+ */
 public data class PurchasesConfiguration(
     internal val apiKey: String,
     internal val appUserId: String,
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesDelegate.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesDelegate.kt
index 4e90e32b..821da41c 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesDelegate.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesDelegate.kt
@@ -3,6 +3,10 @@ package io.shortway.kobankat
 import io.shortway.kobankat.models.StoreProduct
 import io.shortway.kobankat.models.StoreTransaction
 
+/**
+ * A listener interface responsible for handling promotional product purchases (App Store only) and
+ * changes to customer information.
+ */
 public interface PurchasesDelegate {
 
     /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesException.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesException.kt
index e2fb2d68..2b7ca4c1 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesException.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesException.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat
 
+/**
+ * An exception wrapping a [PurchasesError].
+ */
 public open class PurchasesException(public val error: PurchasesError) : Exception() {
 
     public val code: PurchasesErrorCode
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesFactory.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesFactory.kt
index ad07c09b..e02b70d1 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesFactory.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesFactory.kt
@@ -1,10 +1,22 @@
 package io.shortway.kobankat
 
+import io.shortway.kobankat.PurchasesFactory.sharedInstance
 import io.shortway.kobankat.models.BillingFeature
 import kotlin.jvm.JvmOverloads
 import kotlin.jvm.JvmStatic
 
+/**
+ * Factory of [Purchases]. Call `configure()` in each respective platform source set before
+ * accessing the singleton Purchases instance using [sharedInstance].
+ */
 public expect object PurchasesFactory {
+
+    /**
+     * Singleton instance of Purchases. `configure()` will set this. Will throw an exception if the
+     * shared instance has not been configured.
+     *
+     * @return A previously set singleton Purchases instance.
+     */
     public val sharedInstance: Purchases
 
     /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesTransactionException.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesTransactionException.kt
index eb066c42..e4880f20 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesTransactionException.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/PurchasesTransactionException.kt
@@ -1,6 +1,13 @@
 package io.shortway.kobankat
 
+/**
+ * An exception indicating an error occurred during a transaction. Extends [PurchasesException] by
+ * adding a [userCancelled] property.
+ */
 public class PurchasesTransactionException(
     purchasesError: PurchasesError,
+    /**
+     * Whether the user cancelled the transaction.
+     */
     public val userCancelled: Boolean,
 ) : PurchasesException(purchasesError)
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/errors.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/errors.kt
index f0a24130..8985b5e9 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/errors.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/errors.kt
@@ -18,6 +18,9 @@ public class PurchasesError(
     }
 }
 
+/**
+ * A predefined error type.
+ */
 public enum class PurchasesErrorCode(public val code: Int, public val description: String) {
     UnknownError(0, "Unknown error."),
     PurchaseCancelledError(1, "Purchase was cancelled."),
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/i18n/Locale.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/i18n/Locale.kt
index 80ec7262..91d478c8 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/i18n/Locale.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/i18n/Locale.kt
@@ -1,11 +1,24 @@
 package io.shortway.kobankat.i18n
 
-@Suppress("DataClassPrivateConstructor")
-public data class Locale private constructor(val languageCode: String, val countryCode: String) {
+/**
+ * Minimal representation of a locale.
+ */
+public class Locale private constructor(
+    public val languageCode: String,
+    public val countryCode: String
+) {
 
     public companion object {
         public val Default: Locale = defaultLocale()
 
+        /**
+         * Creates a new Locale instance.
+         *
+         * @param languageCode A 2-letter [ISO 639](https://en.wikipedia.org/wiki/ISO_639) language
+         * code.
+         * @param countryCode A 0, 2 or 3-letter
+         * [ISO 3166-1](https://en.wikipedia.org/wiki/ISO_3166-1) country code.
+         */
         public fun create(languageCode: String, countryCode: String): Locale =
             Locale(
                 languageCode = languageCode.lowercase(),
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/GoogleReplacementMode.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/GoogleReplacementMode.kt
index 20eb6e96..bb0e01f3 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/GoogleReplacementMode.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/GoogleReplacementMode.kt
@@ -2,6 +2,14 @@ package io.shortway.kobankat.models
 
 import io.shortway.kobankat.ReplacementMode
 
+/**
+ * Enum of possible replacement modes to be passed to a Play Store purchase.
+ * Ignored for Amazon and App Store purchases.
+ *
+ * See
+ * [developer.android.com](https://developer.android.com/google/play/billing/subscriptions#proration)
+ * for examples.
+ */
 public expect enum class GoogleReplacementMode: ReplacementMode {
     /**
      * Old subscription is cancelled, and new subscription takes effect immediately.
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Period.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Period.kt
index f6d9ab3a..4933fc31 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Period.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Period.kt
@@ -6,7 +6,14 @@ private const val DAYS_PER_YEAR = 365.0
 private const val MONTHS_PER_YEAR = 12.0
 private const val WEEKS_PER_MONTH = DAYS_PER_YEAR / MONTHS_PER_YEAR / DAYS_PER_WEEK
 
+/**
+ * Represents subscription or [PricingPhase] billing period.
+ */
 public expect class Period
+
+/**
+ * The unit of time a [Period] is denoted in.
+ */
 public expect enum class PeriodUnit {
     DAY,
     WEEK,
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Price.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Price.kt
index 4c99815a..93e28620 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Price.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Price.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat.models
 
+/**
+ * Represents a monetary price.
+ */
 public expect class Price {
     /**
      * Formatted price of the item, including its currency sign. For example $3.00.
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchaseState.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchaseState.kt
deleted file mode 100644
index 858493d0..00000000
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchaseState.kt
+++ /dev/null
@@ -1,7 +0,0 @@
-package io.shortway.kobankat.models
-
-public enum class PurchaseState {
-    UNSPECIFIED_STATE,
-    PURCHASED,
-    PENDING,
-}
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchasingData.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchasingData.kt
index e561f2f0..ad456a75 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchasingData.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/PurchasingData.kt
@@ -2,6 +2,9 @@ package io.shortway.kobankat.models
 
 import io.shortway.kobankat.ProductType
 
+/**
+ * Data connected to a purchase.
+ */
 public expect interface PurchasingData {
     public val productId: String
     public val productType: ProductType
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/RecurrenceMode.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/RecurrenceMode.kt
index 8bf84075..4feca43f 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/RecurrenceMode.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/RecurrenceMode.kt
@@ -29,7 +29,4 @@ public val RecurrenceMode.identifier: Int?
         RecurrenceMode.NON_RECURRING -> 3
         RecurrenceMode.UNKNOWN -> null
         else -> error("Unknown RecurrenceMode: $this")
-    }
-
-public fun Int?.toRecurrenceMode(): RecurrenceMode =
-    RecurrenceMode.entries.firstOrNull { it.identifier == this } ?: RecurrenceMode.UNKNOWN
\ No newline at end of file
+    }
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreProduct.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreProduct.kt
index 5472ef81..6ece473f 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreProduct.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreProduct.kt
@@ -3,6 +3,9 @@ package io.shortway.kobankat.models
 import io.shortway.kobankat.ProductType
 import io.shortway.kobankat.i18n.Locale
 
+/**
+ * Represents an in-app product's or subscription's listing details.
+ */
 public expect class StoreProduct
 
 /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreTransaction.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreTransaction.kt
index 0c459cdf..91887e27 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreTransaction.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/StoreTransaction.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat.models
 
+/**
+ * Represents an in-app billing purchase.
+ */
 public expect class StoreTransaction
 
 /**
@@ -20,11 +23,4 @@ public expect val StoreTransaction.productIds: List<String>
 /**
  * Time the product was purchased, in milliseconds since the epoch.
  */
-public expect val StoreTransaction.purchaseTime: Long
-
-public enum class PurchaseType {
-    GOOGLE_PURCHASE,
-    GOOGLE_RESTORED_PURCHASE,
-    AMAZON_PURCHASE,
-    APP_STORE_PURCHASE,
-}
\ No newline at end of file
+public expect val StoreTransaction.purchaseTime: Long
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/SubscriptionOptions.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/SubscriptionOptions.kt
index d0ebd248..8682735c 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/SubscriptionOptions.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/SubscriptionOptions.kt
@@ -1,5 +1,8 @@
 package io.shortway.kobankat.models
 
+/**
+ * A collection of [SubscriptionOption]s.
+ */
 public expect class SubscriptionOptions  {
 
     /**
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Transaction.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Transaction.kt
index efa2748c..a8b5abb9 100644
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/models/Transaction.kt
+++ b/core/src/commonMain/kotlin/io/shortway/kobankat/models/Transaction.kt
@@ -1,7 +1,21 @@
 package io.shortway.kobankat.models
 
+/**
+ * Representation of a transaction.
+ */
 public expect class Transaction
 
+/**
+ * Identifier of this transaction.
+ */
 public expect val Transaction.transactionIdentifier: String
+
+/**
+ * The identifier of the purchased product.
+ */
 public expect val Transaction.productIdentifier: String
+
+/**
+ * The purchase date in millis since the Unix epoch.
+ */
 public expect val Transaction.purchaseDateMillis: Long
\ No newline at end of file
diff --git a/core/src/commonMain/kotlin/io/shortway/kobankat/paywalls/PaywallData.kt b/core/src/commonMain/kotlin/io/shortway/kobankat/paywalls/PaywallData.kt
deleted file mode 100644
index a2dc6228..00000000
--- a/core/src/commonMain/kotlin/io/shortway/kobankat/paywalls/PaywallData.kt
+++ /dev/null
@@ -1,296 +0,0 @@
-package io.shortway.kobankat.paywalls
-
-import io.shortway.kobankat.i18n.Locale
-
-/**
- * Represents the data required to display a paywall using the `RevenueCatUI` library.
- * This data can be created and configured in the dashboard and then accessed from the `Offering/paywall`.
- *
- * @see [Paywalls Documentation](https://rev.cat/paywalls)
- */
-
-public interface PaywallData {
-
-    /**
-     * The type of template used to display this paywall.
-     */
-    public val templateName: String
-
-    /**
-     * Generic configuration for any paywall.
-     */
-    public val config: Configuration
-
-    /**
-     * The base remote URL where assets for this paywall are stored.
-     */
-    public val assetBaseURL: String
-
-    /**
-     * The revision identifier for this paywall.
-     */
-    public val revision: Int
-        get() = 0
-    public val localization: Map<String, LocalizedConfiguration>
-
-    /**
-     * Returns the [Locale] and [LocalizedConfiguration] to be used based on the current locale list
-     * and the available locales for this paywall.
-     */
-    public val localizedConfiguration: Pair<Locale, LocalizedConfiguration>
-
-
-
-   public fun configForLocale(requiredLocale: Locale): LocalizedConfiguration?
-
-    /**
-     * Generic configuration for any paywall.
-     */
-    public interface Configuration {
-        /**
-         * The list of package identifiers this paywall will display.
-         */
-        public val packageIds: List<String>
-
-        /**
-         * The package to be selected by default.
-         */
-        public val defaultPackage: String?
-            get() = null
-
-
-        public  val imagesWebp: Images?
-            get() = null
-
-
-        public  val legacyImages: Images?
-            get() = null
-
-        /**
-         * Whether the background image will be blurred (in templates with one).
-         */
-        public val blurredBackgroundImage: Boolean
-            get() = false
-
-        /**
-         * Whether a restore purchases button should be displayed.
-         */
-        public val displayRestorePurchases: Boolean
-            get() = true
-
-        /**
-         * If set, the paywall will display a terms of service link.
-         */
-        public val termsOfServiceURL: String?
-            get() = null
-
-        /**
-         * If set, the paywall will display a privacy policy link.
-         */
-        public val privacyURL: String?
-            get() = null
-
-        /**
-         * The set of colors used.
-         */
-        public val colors: ColorInformation
-
-        /**
-         * The images for this template.
-         */
-        public val images: Images
-            get() {
-                return Images(
-                    header = imagesWebp?.header ?: legacyImages?.header,
-                    background = imagesWebp?.background ?: legacyImages?.background,
-                    icon = imagesWebp?.icon ?: legacyImages?.icon,
-                )
-            }
-
-        public data class Images(
-            /**
-             * Image displayed as a header in a template.
-             */
-            
-            val header: String? = null,
-
-            /**
-             * Image displayed as a background in a template.
-             */
-            
-            val background: String? = null,
-
-            /**
-             * Image displayed as an app icon in a template.
-             */
-            
-            val icon: String? = null,
-        ) {
-            internal val all: List<String>
-                get() = listOfNotNull(header, background, icon)
-        }
-
-        
-        public data class ColorInformation(
-            /**
-             * Set of colors for light mode.
-             */
-            val light: Colors,
-
-            /**
-             * Set of colors for dark mode.
-             */
-            val dark: Colors? = null,
-        )
-
-        
-        public data class Colors(
-            /**
-             * Hex color for the background of the paywall.
-             */
-             val background: String,
-
-            /**
-             * Hex color for the primary text element.
-             */
-             val text1: String,
-
-            /**
-             * Hex color for secondary text element.
-             */
-             val text2: String? = null,
-
-            /**
-             * Hex color for tertiary text element.
-             */
-             val text3: String? = null,
-
-            /**
-             * Background hex color of the main call to action button.
-             */
-             val callToActionBackground: String,
-
-            /**
-             * Foreground hex color of the main call to action button.
-             */
-             val callToActionForeground: String,
-
-            /**
-             * If present, the CTA will create a vertical gradient from [callToActionBackground] to this hex color.
-             */
-            val callToActionSecondaryBackground: String? = null,
-
-            /**
-             * Primary accent hex color.
-             */
-             val accent1: String? = null,
-
-            /**
-             * Secondary accent hex color.
-             */
-             val accent2: String? = null,
-
-            /**
-             * Tertiary accent hex color.
-             */
-             val accent3: String? = null,
-        )
-    }
-
-    /**
-     * Defines the necessary localized information for a paywall.
-     */
-    public data class LocalizedConfiguration(
-        /**
-         * The title of the paywall screen.
-         */
-        val title: String,
-
-        /**
-         * The subtitle of the paywall screen.
-         */
-        
-        val subtitle: String? = null,
-
-        /**
-         * The content of the main action button for purchasing a subscription.
-         */
-        
-        val callToAction: String,
-
-        /**
-         * The content of the main action button for purchasing a subscription when an intro offer is available.
-         * If `null`, no information regarding trial eligibility will be displayed.
-         */
-        
-        
-        val callToActionWithIntroOffer: String? = null,
-
-        /**
-         * The content of the main action button for purchasing a subscription when multiple intro offer are available.
-         * This may happen in Google Play, if you have an offer with both a free trial and a discounted price.
-         * If `null`, no information regarding trial eligibility will be displayed.
-         */
-        
-        
-        val callToActionWithMultipleIntroOffers: String? = null,
-
-        /**
-         * Description for the offer to be purchased.
-         */
-        
-        
-        val offerDetails: String? = null,
-
-        /**
-         * Description for the offer to be purchased when an intro offer is available.
-         * If `null`, no information regarding trial eligibility will be displayed.
-         */
-        
-        
-        val offerDetailsWithIntroOffer: String? = null,
-
-        /**
-         * Description for the offer to be purchased when multiple intro offers are available.
-         * This may happen in Google Play, if you have an offer with both a free trial and a discounted price.
-         * If `null`, no information regarding trial eligibility will be displayed.
-         */
-        
-        
-        val offerDetailsWithMultipleIntroOffers: String? = null,
-
-        /**
-         * The name representing each of the packages, most commonly a variable.
-         */
-        
-        
-        val offerName: String? = null,
-
-        /**
-         * An optional list of features that describe this paywall.
-         */
-        val features: List<Feature> = emptyList(),
-    ) {
-        /**
-         * An item to be showcased in a paywall.
-         */
-        
-        public data class Feature(
-            /**
-             * The title of the feature.
-             */
-            val title: String,
-
-            /**
-             * An optional description of the feature.
-             */
-            val content: String? = null,
-
-            /**
-             * An optional icon for the feature.
-             * This must be an icon identifier known by `RevenueCatUI`.
-             */
-             val iconID: String? = null,
-        )
-    }
-}
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