diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 523e440..2630398 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -7,11 +7,11 @@ plugins {
 }
 
 android {
-    namespace = "com.github.nullptroma.wallenc"
+    namespace = "com.github.nullptroma.wallenc.app"
     compileSdk = 35
 
     defaultConfig {
-        applicationId = "com.github.nullptroma.wallenc"
+        applicationId = "com.github.nullptroma.wallenc.app"
         minSdk = 24
         targetSdk = 34
         versionCode = 1
@@ -63,18 +63,6 @@ dependencies {
     implementation(libs.dagger.hilt)
     ksp(libs.dagger.hilt.compiler)
 
-    // Room
-    implementation(libs.room.ktx)
-    implementation(libs.room.runtime)
-    annotationProcessor(libs.room.compiler)
-    ksp(libs.room.compiler)
-
-    // Retrofit
-    implementation(libs.retrofit)
-    implementation(libs.retrofit.converter.gson)
-    implementation(libs.retrofit.converter.scalars)
-    implementation(libs.google.gson)
-
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
     implementation(libs.androidx.activity.compose)
@@ -93,6 +81,6 @@ dependencies {
     androidTestImplementation(platform(libs.androidx.compose.bom))
     androidTestImplementation(libs.androidx.ui.test.junit4)
 
-    implementation(project(":domain"))
     implementation(project(":data"))
+    implementation(project(":domain"))
 }
\ No newline at end of file
diff --git a/app/src/androidTest/java/com/github/nullptroma/wallenc/ExampleInstrumentedTest.kt b/app/src/androidTest/java/com/github/nullptroma/wallenc/app/ExampleInstrumentedTest.kt
similarity index 93%
rename from app/src/androidTest/java/com/github/nullptroma/wallenc/ExampleInstrumentedTest.kt
rename to app/src/androidTest/java/com/github/nullptroma/wallenc/app/ExampleInstrumentedTest.kt
index 233462b..3a63d74 100644
--- a/app/src/androidTest/java/com/github/nullptroma/wallenc/ExampleInstrumentedTest.kt
+++ b/app/src/androidTest/java/com/github/nullptroma/wallenc/app/ExampleInstrumentedTest.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc
+package com.github.nullptroma.wallenc.app
 
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/MainActivity.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/MainActivity.kt
similarity index 90%
rename from app/src/main/java/com/github/nullptroma/wallenc/MainActivity.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/MainActivity.kt
index 6266cb4..46d55a1 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/MainActivity.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/MainActivity.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc
+package com.github.nullptroma.wallenc.app
 
 import android.os.Bundle
 import android.widget.Toast
@@ -18,10 +18,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
-import androidx.hilt.navigation.compose.hiltViewModel
-import com.github.nullptroma.wallenc.ui.screens.main.MainScreen
-import com.github.nullptroma.wallenc.ui.screens.main.MainViewModel
-import com.github.nullptroma.wallenc.ui.theme.WallencTheme
+import com.github.nullptroma.wallenc.app.ui.theme.WallencTheme
 import com.yandex.authsdk.YandexAuthLoginOptions
 import com.yandex.authsdk.YandexAuthOptions
 import com.yandex.authsdk.YandexAuthResult
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/WallencApplication.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/WallencApplication.kt
similarity index 76%
rename from app/src/main/java/com/github/nullptroma/wallenc/WallencApplication.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/WallencApplication.kt
index 0769253..a768589 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/WallencApplication.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/WallencApplication.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc
+package com.github.nullptroma.wallenc.app
 
 import android.app.Application
 import dagger.hilt.android.HiltAndroidApp
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreen.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreen.kt
similarity index 93%
rename from app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreen.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreen.kt
index fb63cb4..7654da3 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreen.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreen.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc.ui.screens.main
+package com.github.nullptroma.wallenc.app.ui.screens.main
 
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreenState.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreenState.kt
new file mode 100644
index 0000000..c91dc4d
--- /dev/null
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainScreenState.kt
@@ -0,0 +1,3 @@
+package com.github.nullptroma.wallenc.app.ui.screens.main
+
+data class MainScreenState(val value: String)
\ No newline at end of file
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainViewModel.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainViewModel.kt
similarity index 80%
rename from app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainViewModel.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainViewModel.kt
index faeda3f..37f974c 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainViewModel.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/main/MainViewModel.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc.ui.screens.main
+package com.github.nullptroma.wallenc.app.ui.screens.main
 
 import androidx.lifecycle.ViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Color.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Color.kt
similarity index 82%
rename from app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Color.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Color.kt
index a70ad7b..eeae900 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Color.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Color.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc.ui.theme
+package com.github.nullptroma.wallenc.app.ui.theme
 
 import androidx.compose.ui.graphics.Color
 
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Theme.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Theme.kt
similarity index 96%
rename from app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Theme.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Theme.kt
index dfff095..9b88026 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Theme.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Theme.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc.ui.theme
+package com.github.nullptroma.wallenc.app.ui.theme
 
 import android.os.Build
 import androidx.compose.foundation.isSystemInDarkTheme
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Type.kt b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Type.kt
similarity index 94%
rename from app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Type.kt
rename to app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Type.kt
index 45b699a..231e445 100644
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/theme/Type.kt
+++ b/app/src/main/java/com/github/nullptroma/wallenc/app/ui/screens/theme/Type.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.wallenc.ui.theme
+package com.github.nullptroma.wallenc.app.ui.theme
 
 import androidx.compose.material3.Typography
 import androidx.compose.ui.text.TextStyle
diff --git a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreenState.kt b/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreenState.kt
deleted file mode 100644
index 6159605..0000000
--- a/app/src/main/java/com/github/nullptroma/wallenc/ui/screens/main/MainScreenState.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-package com.github.nullptroma.wallenc.ui.screens.main
-
-data class MainScreenState(val value: String)
\ No newline at end of file
diff --git a/app/src/test/java/com/github/nullptroma/wallenc/ExampleUnitTest.kt b/app/src/test/java/com/github/nullptroma/wallenc/ExampleUnitTest.kt
deleted file mode 100644
index cc1c8e0..0000000
--- a/app/src/test/java/com/github/nullptroma/wallenc/ExampleUnitTest.kt
+++ /dev/null
@@ -1,17 +0,0 @@
-package com.github.nullptroma.wallenc
-
-import org.junit.Test
-
-import org.junit.Assert.*
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}
\ No newline at end of file
diff --git a/domain/src/test/java/com/github/nullptroma/domain/ExampleUnitTest.kt b/app/src/test/java/com/github/nullptroma/wallenc/app/ExampleUnitTest.kt
similarity index 88%
rename from domain/src/test/java/com/github/nullptroma/domain/ExampleUnitTest.kt
rename to app/src/test/java/com/github/nullptroma/wallenc/app/ExampleUnitTest.kt
index 811a1e1..5aba99d 100644
--- a/domain/src/test/java/com/github/nullptroma/domain/ExampleUnitTest.kt
+++ b/app/src/test/java/com/github/nullptroma/wallenc/app/ExampleUnitTest.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.domain
+package com.github.nullptroma.wallenc.app
 
 import org.junit.Test
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 27ec794..2e23357 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,4 +7,5 @@ plugins {
     alias(libs.plugins.android.library) apply false
     alias(libs.plugins.dagger.hilt) apply false
     alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.jetbrains.kotlin.jvm) apply false
 }
\ No newline at end of file
diff --git a/data/build.gradle.kts b/data/build.gradle.kts
index dbb75ff..4bff425 100644
--- a/data/build.gradle.kts
+++ b/data/build.gradle.kts
@@ -6,8 +6,8 @@ plugins {
 }
 
 android {
-    namespace = "com.github.nullptroma.data"
-    compileSdk = 35
+    namespace = "com.github.nullptroma.wallenc.data"
+    compileSdk = 34
 
     defaultConfig {
         minSdk = 24
@@ -35,13 +35,28 @@ android {
 }
 
 dependencies {
+    // Hilt
     implementation(libs.dagger.hilt)
     ksp(libs.dagger.hilt.compiler)
 
+    // Room
+    implementation(libs.room.ktx)
+    implementation(libs.room.runtime)
+    annotationProcessor(libs.room.compiler)
+    ksp(libs.room.compiler)
+
+    // Retrofit
+    implementation(libs.retrofit)
+    implementation(libs.retrofit.converter.gson)
+    implementation(libs.retrofit.converter.scalars)
+    implementation(libs.google.gson)
+
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.appcompat)
     implementation(libs.material)
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
+
+    implementation(project(":domain"))
 }
\ No newline at end of file
diff --git a/data/src/androidTest/java/com/github/nullptroma/data/ExampleInstrumentedTest.kt b/data/src/androidTest/java/com/github/nullptroma/data/ExampleInstrumentedTest.kt
deleted file mode 100644
index 11a3c5f..0000000
--- a/data/src/androidTest/java/com/github/nullptroma/data/ExampleInstrumentedTest.kt
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.github.nullptroma.data
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("com.github.nullptroma.data.test", appContext.packageName)
-    }
-}
\ No newline at end of file
diff --git a/domain/src/androidTest/java/com/github/nullptroma/domain/ExampleInstrumentedTest.kt b/data/src/androidTest/java/com/github/nullptroma/wallenc/data/ExampleInstrumentedTest.kt
similarity index 81%
rename from domain/src/androidTest/java/com/github/nullptroma/domain/ExampleInstrumentedTest.kt
rename to data/src/androidTest/java/com/github/nullptroma/wallenc/data/ExampleInstrumentedTest.kt
index cde98b1..c4dfb88 100644
--- a/domain/src/androidTest/java/com/github/nullptroma/domain/ExampleInstrumentedTest.kt
+++ b/data/src/androidTest/java/com/github/nullptroma/wallenc/data/ExampleInstrumentedTest.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.domain
+package com.github.nullptroma.wallenc.data
 
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
@@ -19,6 +19,6 @@ class ExampleInstrumentedTest {
     fun useAppContext() {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("com.github.nullptroma.domain.test", appContext.packageName)
+        assertEquals("com.github.nullptroma.wallenc.data.test", appContext.packageName)
     }
 }
\ No newline at end of file
diff --git a/data/src/test/java/com/github/nullptroma/data/ExampleUnitTest.kt b/data/src/test/java/com/github/nullptroma/wallenc/data/ExampleUnitTest.kt
similarity index 87%
rename from data/src/test/java/com/github/nullptroma/data/ExampleUnitTest.kt
rename to data/src/test/java/com/github/nullptroma/wallenc/data/ExampleUnitTest.kt
index aa929e4..057818b 100644
--- a/data/src/test/java/com/github/nullptroma/data/ExampleUnitTest.kt
+++ b/data/src/test/java/com/github/nullptroma/wallenc/data/ExampleUnitTest.kt
@@ -1,4 +1,4 @@
-package com.github.nullptroma.data
+package com.github.nullptroma.wallenc.data
 
 import org.junit.Test
 
diff --git a/domain/build.gradle.kts b/domain/build.gradle.kts
index d663175..a8c8c10 100644
--- a/domain/build.gradle.kts
+++ b/domain/build.gradle.kts
@@ -1,47 +1,9 @@
 plugins {
-    alias(libs.plugins.android.library)
-    alias(libs.plugins.kotlin.android)
-    alias(libs.plugins.dagger.hilt)
-    alias(libs.plugins.ksp)
+    id("java-library")
+    alias(libs.plugins.jetbrains.kotlin.jvm)
 }
 
-android {
-    namespace = "com.github.nullptroma.domain"
-    compileSdk = 35
-
-    defaultConfig {
-        minSdk = 24
-
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-        consumerProguardFiles("consumer-rules.pro")
-    }
-
-    buildTypes {
-        release {
-            isMinifyEnabled = false
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-        }
-    }
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
-    }
-    kotlinOptions {
-        jvmTarget = "1.8"
-    }
-}
-
-dependencies {
-    implementation(libs.dagger.hilt)
-    ksp(libs.dagger.hilt.compiler)
-
-    implementation(libs.androidx.core.ktx)
-    implementation(libs.androidx.appcompat)
-    implementation(libs.material)
-    testImplementation(libs.junit)
-    androidTestImplementation(libs.androidx.junit)
-    androidTestImplementation(libs.androidx.espresso.core)
+java {
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }
\ No newline at end of file
diff --git a/domain/consumer-rules.pro b/domain/consumer-rules.pro
deleted file mode 100644
index e69de29..0000000
diff --git a/domain/proguard-rules.pro b/domain/proguard-rules.pro
deleted file mode 100644
index 481bb43..0000000
--- a/domain/proguard-rules.pro
+++ /dev/null
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/domain/src/main/AndroidManifest.xml b/domain/src/main/AndroidManifest.xml
deleted file mode 100644
index a5918e6..0000000
--- a/domain/src/main/AndroidManifest.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-
-</manifest>
\ No newline at end of file
diff --git a/domain/src/main/java/com/github/nullptroma/wallenc/domain/MyClass.kt b/domain/src/main/java/com/github/nullptroma/wallenc/domain/MyClass.kt
new file mode 100644
index 0000000..2a3e089
--- /dev/null
+++ b/domain/src/main/java/com/github/nullptroma/wallenc/domain/MyClass.kt
@@ -0,0 +1,4 @@
+package com.github.nullptroma.wallenc.domain
+
+class MyClass {
+}
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index ba25c52..389c18a 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -18,6 +18,7 @@ retrofit = "2.9.0"
 gson = "2.10.1"
 appcompat = "1.7.0"
 material = "1.12.0"
+jetbrainsKotlinJvm = "2.0.20"
 
 [libraries]
 navigation = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigation" }
@@ -67,4 +68,5 @@ compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "
 dagger-hilt = { id = "com.google.dagger.hilt.android", version.ref = "daggerHilt" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
 android-library = { id = "com.android.library", version.ref = "agp" }
+jetbrains-kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "jetbrainsKotlinJvm" }
 
diff --git a/settings.gradle.kts b/settings.gradle.kts
index edb7ac5..9a05bb0 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -21,5 +21,5 @@ dependencyResolutionManagement {
 
 rootProject.name = "Wallenc"
 include(":app")
-include(":domain")
 include(":data")
+include(":domain")