diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8649aa41f8..45dcb68db3f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.3.2
+
+* `Versions`:
+    * `Coroutines`: `1.4.1` -> `1.4.2`
+* `Repos`:
+    * `Common`:
+        * New inline function `mapper` for simplier creating of `MapperRepo` objects
+        * Extensions `withMapper` for keyvalue repos and onetomany repos
+
 ## 0.3.1
 
 **ANDROID PACKAGES**
diff --git a/gradle.properties b/gradle.properties
index 22e751c045b..7e3b86a25a2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -12,7 +12,7 @@ kotlin_coroutines_version=1.4.1
 kotlin_serialisation_core_version=1.0.1
 kotlin_exposed_version=0.28.1
 
-ktor_version=1.4.1
+ktor_version=1.4.2
 
 klockVersion=1.12.1
 
@@ -41,5 +41,5 @@ dokka_version=1.4.0
 # Project data
 
 group=dev.inmo
-version=0.3.1
-android_code_version=1
+version=0.3.2
+android_code_version=2
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
index 334077a007f..3d25d74ee2a 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapperRepo.kt
@@ -6,4 +6,16 @@ interface MapperRepo<FromKey, FromValue, ToKey, ToValue> {
 
     suspend fun ToKey.toInnerKey() = this as FromKey
     suspend fun ToValue.toInnerValue() = this as FromValue
-}
\ No newline at end of file
+}
+
+inline fun <reified FromKey, reified FromValue, reified ToKey, reified ToValue> mapper(
+    crossinline keyFromToTo: suspend FromKey.() -> ToKey = { this as ToKey },
+    crossinline valueFromToTo: suspend FromValue.() -> ToValue = { this as ToValue },
+    crossinline keyToToFrom: suspend ToKey.() -> FromKey = { this as FromKey },
+    crossinline valueToToFrom: suspend ToValue.() -> FromValue = { this as FromValue },
+) = object : MapperRepo<FromKey, FromValue, ToKey, ToValue> {
+    override suspend fun FromKey.toOutKey(): ToKey = keyFromToTo()
+    override suspend fun FromValue.toOutValue(): ToValue = valueFromToTo()
+    override suspend fun ToKey.toInnerKey(): FromKey = keyToToFrom()
+    override suspend fun ToValue.toInnerValue(): FromValue = valueToToFrom()
+}
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
index 75d4f860079..6a770683a4d 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/KeyValueMappers.kt
@@ -51,6 +51,11 @@ open class MapperReadStandardKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     override suspend fun count(): Long = to.count()
 }
 
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> ReadStandardKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): ReadStandardKeyValueRepo<FromKey, FromValue> = MapperReadStandardKeyValueRepo(this, mapper)
+
 open class MapperWriteStandardKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     private val to: WriteStandardKeyValueRepo<ToKey, ToValue>,
     mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
@@ -75,6 +80,11 @@ open class MapperWriteStandardKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     )
 }
 
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> WriteStandardKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): WriteStandardKeyValueRepo<FromKey, FromValue> = MapperWriteStandardKeyValueRepo(this, mapper)
+
 open class MapperStandardKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     private val to: StandardKeyValueRepo<ToKey, ToValue>,
     mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
@@ -82,3 +92,8 @@ open class MapperStandardKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     MapperRepo<FromKey, FromValue, ToKey, ToValue> by mapper,
     ReadStandardKeyValueRepo<FromKey, FromValue> by MapperReadStandardKeyValueRepo(to, mapper),
     WriteStandardKeyValueRepo<FromKey, FromValue> by MapperWriteStandardKeyValueRepo(to, mapper)
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> StandardKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): StandardKeyValueRepo<FromKey, FromValue> = MapperStandardKeyValueRepo(this, mapper)
diff --git a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
index 37c1602b203..b3fbddd9db7 100644
--- a/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
+++ b/repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt
@@ -49,6 +49,11 @@ open class MapperReadOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     override suspend fun count(k: FromKey): Long = to.count(k.toOutKey())
 }
 
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> ReadOneToManyKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): ReadOneToManyKeyValueRepo<FromKey, FromValue> = MapperReadOneToManyKeyValueRepo(this, mapper)
+
 open class MapperWriteOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     private val to: WriteOneToManyKeyValueRepo<ToKey, ToValue>,
     mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
@@ -78,6 +83,11 @@ open class MapperWriteOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     override suspend fun clear(k: FromKey) = to.clear(k.toOutKey())
 }
 
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> WriteOneToManyKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): WriteOneToManyKeyValueRepo<FromKey, FromValue> = MapperWriteOneToManyKeyValueRepo(this, mapper)
+
 open class MapperOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     private val to: OneToManyKeyValueRepo<ToKey, ToValue>,
     mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
@@ -85,3 +95,8 @@ open class MapperOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     MapperRepo<FromKey, FromValue, ToKey, ToValue> by mapper,
     ReadOneToManyKeyValueRepo<FromKey, FromValue> by MapperReadOneToManyKeyValueRepo(to, mapper),
     WriteOneToManyKeyValueRepo<FromKey, FromValue> by MapperWriteOneToManyKeyValueRepo(to, mapper)
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun <FromKey, FromValue, ToKey, ToValue> OneToManyKeyValueRepo<ToKey, ToValue>.withMapper(
+    mapper: MapperRepo<FromKey, FromValue, ToKey, ToValue>
+): OneToManyKeyValueRepo<FromKey, FromValue> = MapperOneToManyKeyValueRepo(this, mapper)