diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e3f7a1..2062367 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 0.4.2
+
+* Add `setDefaultKSLog` and `addDefaultKSLog`
+* Add `plus` operation for two `KSLog` instances to call them both on each log performing
+* Add `KSLog` factory for simple creation of `CallbackKSLog`
+* Add `MessageFormatter` factory
+
 ## 0.4.1
 
 * Fixes in resolution ambiguity for functions with messages
diff --git a/gradle.properties b/gradle.properties
index 9283f6f..8bba418 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,5 +9,5 @@ android.enableJetifier=true
 # Project data
 
 group=dev.inmo
-version=0.4.1
-android_code_version=11
+version=0.4.2
+android_code_version=12
diff --git a/src/commonMain/kotlin/CallbackKSLog.kt b/src/commonMain/kotlin/CallbackKSLog.kt
index 7d64495..4a43b34 100644
--- a/src/commonMain/kotlin/CallbackKSLog.kt
+++ b/src/commonMain/kotlin/CallbackKSLog.kt
@@ -7,3 +7,7 @@ class CallbackKSLog(
 ) : KSLog {
     override fun performLog(level: LogLevel, tag: String?, message: Any, throwable: Throwable?) = performLogCallback(level, tag, message, throwable)
 }
+
+fun KSLog(
+    performLogCallback: SimpleKSLogCallback
+) = CallbackKSLog(performLogCallback)
diff --git a/src/commonMain/kotlin/KSLog.kt b/src/commonMain/kotlin/KSLog.kt
index be76ca4..40d8270 100644
--- a/src/commonMain/kotlin/KSLog.kt
+++ b/src/commonMain/kotlin/KSLog.kt
@@ -1,6 +1,7 @@
 package dev.inmo.kslog.common
 
 import dev.inmo.kslog.common.filter.filtered
+import dev.inmo.kslog.common.utils.plus
 
 
 enum class LogLevel {
@@ -110,3 +111,6 @@ fun KSLog(
 ).filtered { l, _, _ ->
     minLoggingLevel.ordinal <= l.ordinal
 }
+
+fun setDefaultKSLog(newDefault: KSLog) { KSLog.default = newDefault }
+fun addDefaultKSLog(newDefault: KSLog) { KSLog.default = KSLog.default + newDefault }
diff --git a/src/commonMain/kotlin/KSLogTypealiases.kt b/src/commonMain/kotlin/KSLogTypealiases.kt
index d36b5a1..0e2b5c8 100644
--- a/src/commonMain/kotlin/KSLogTypealiases.kt
+++ b/src/commonMain/kotlin/KSLogTypealiases.kt
@@ -1,6 +1,8 @@
 package dev.inmo.kslog.common
 
-typealias MessageFormatter = (l: LogLevel, t: String, m: Any, Throwable?) -> String
+typealias MessageFormatter = (l: LogLevel, t: String?, m: Any, Throwable?) -> String
+@Suppress("NOTHING_TO_INLINE")
+inline fun MessageFormatter(noinline formatter: MessageFormatter) = formatter
 typealias MessageFilter = (l: LogLevel, t: String?, Throwable?) -> Boolean
-val defaultMessageFormatter: MessageFormatter = { l, t, m, _ -> "[$l] $t - $m" }
+val defaultMessageFormatter: MessageFormatter = { l, t, m, _ -> "[$l] ${t ?.let { "$it " } ?: ""}- $m" }
 
diff --git a/src/commonMain/kotlin/utils/Combination.kt b/src/commonMain/kotlin/utils/Combination.kt
new file mode 100644
index 0000000..cee2897
--- /dev/null
+++ b/src/commonMain/kotlin/utils/Combination.kt
@@ -0,0 +1,15 @@
+package dev.inmo.kslog.common.utils
+
+import dev.inmo.kslog.common.CallbackKSLog
+import dev.inmo.kslog.common.KSLog
+
+infix operator fun KSLog.plus(other: KSLog) = CallbackKSLog { l, t, m, e ->
+    val resultOfFirst = runCatching {
+        this@plus.performLog(l, t, m, e)
+    }
+    val resultOfSecond = runCatching {
+        other.performLog(l, t, m, e)
+    }
+    resultOfFirst.onFailure { throw it }
+    resultOfSecond.onFailure { throw it }
+}