diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index fd90055..25e579f 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,6 +1,7 @@
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
 }
 
 android {
@@ -9,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId = "com.example.myapplication"
-        minSdk = 24
+        minSdk = 26
         targetSdk = 33
         versionCode = 1
         versionName = "1.0"
@@ -27,17 +28,17 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "17"
     }
     buildFeatures {
         compose = true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion = "1.4.3"
+        kotlinCompilerExtensionVersion = "1.4.5"
     }
     packaging {
         resources {
@@ -46,9 +47,16 @@ android {
     }
 }
 
+kotlin {
+    jvmToolchain(17)
+}
+
 dependencies {
+    //Core
     implementation("androidx.core:core-ktx:1.9.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
+
+    //UI
     implementation("androidx.activity:activity-compose:1.7.2")
     implementation(platform("androidx.compose:compose-bom:2023.03.00"))
     implementation("androidx.navigation:navigation-compose:2.6.0")
@@ -57,6 +65,16 @@ dependencies {
     implementation("androidx.compose.ui:ui-graphics")
     implementation("androidx.compose.ui:ui-tooling-preview")
     implementation("androidx.compose.material3:material3")
+
+    // Room
+    val room_version = "2.5.2"
+    implementation("androidx.room:room-runtime:$room_version")
+    annotationProcessor("androidx.room:room-compiler:$room_version")
+    ksp("androidx.room:room-compiler:$room_version")
+    implementation("androidx.room:room-ktx:$room_version")
+    implementation("androidx.room:room-paging:$room_version")
+
+    //Tests
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
diff --git a/app/src/main/java/com/example/myapplication/category/composeui/CategotyList.kt b/app/src/main/java/com/example/myapplication/category/composeui/CategotyList.kt
index 6a41ffd..0333199 100644
--- a/app/src/main/java/com/example/myapplication/category/composeui/CategotyList.kt
+++ b/app/src/main/java/com/example/myapplication/category/composeui/CategotyList.kt
@@ -10,22 +10,40 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
-import com.example.myapplication.category.model.getTestCategory
+import com.example.myapplication.category.model.Category
+import com.example.myapplication.database.AppDatabase
 import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @Composable
 fun CategoriesList(navController: NavController?) {
+    val context = LocalContext.current;
+    val categories = remember { mutableStateListOf<Category>() }
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            AppDatabase.getInstance(context).categoryDao().getAll().collect { data ->
+                categories.clear()
+                categories.addAll(data)
+            }
+        }
+    }
     Column(
         horizontalAlignment = Alignment.CenterHorizontally,
         modifier = Modifier
             .padding(all = 10.dp)
             .verticalScroll(rememberScrollState())) {
-        getTestCategory().forEachIndexed() { _, category ->
+        categories.forEachIndexed() { _, category ->
             Row(Modifier.padding(all = 20.dp)) {
                 Text(category.category_name)
                 }
diff --git a/app/src/main/java/com/example/myapplication/category/dao/CategoryDao.kt b/app/src/main/java/com/example/myapplication/category/dao/CategoryDao.kt
new file mode 100644
index 0000000..ea16783
--- /dev/null
+++ b/app/src/main/java/com/example/myapplication/category/dao/CategoryDao.kt
@@ -0,0 +1,27 @@
+package com.example.myapplication.category.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Delete
+import androidx.room.Update
+import com.example.myapplication.category.model.Category
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface CategoryDao {
+    @Query("select * from categories order by category_name collate nocase asc")
+    fun getAll(): Flow<List<Category>>
+
+    @Query("select * from categories where categories.uid = :uid")
+    suspend fun getByUid(uid: Int): Category
+
+    @Insert
+    suspend fun insert(category: Category)
+
+    @Update
+    suspend fun update(category: Category)
+
+    @Delete
+    suspend fun delete(category: Category)
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/category/model/Category.kt b/app/src/main/java/com/example/myapplication/category/model/Category.kt
index 5e69fa7..9c02c8d 100644
--- a/app/src/main/java/com/example/myapplication/category/model/Category.kt
+++ b/app/src/main/java/com/example/myapplication/category/model/Category.kt
@@ -1,15 +1,11 @@
 package com.example.myapplication.category.model
 
-import java.io.Serializable
+import androidx.room.Entity
+import androidx.room.PrimaryKey
 
+@Entity(tableName = "categories")
 data class Category(
+    @PrimaryKey val uid: Int,
     val category_name: String,
-) : Serializable
+)
 
-fun getTestCategory(): List<Category> {
-    return listOf(
-        Category("Отжимания"),
-        Category("Кардио"),
-        Category("Силовые")
-    )
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/challenge/dao/ChallengeDao.kt b/app/src/main/java/com/example/myapplication/challenge/dao/ChallengeDao.kt
new file mode 100644
index 0000000..3c34636
--- /dev/null
+++ b/app/src/main/java/com/example/myapplication/challenge/dao/ChallengeDao.kt
@@ -0,0 +1,27 @@
+package com.example.myapplication.challenge.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Delete
+import androidx.room.Update
+import com.example.myapplication.challenge.model.Challenge
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ChallengeDao {
+    @Query("select * from challenges order by challenge_name asc")
+    fun getAll(): Flow<List<Challenge>>
+
+    @Query("select * from challenges where challenges.challenge_id = :uid")
+    suspend fun getByUid(uid: Int): Challenge
+
+    @Insert
+    suspend fun insert(challenge: Challenge)
+
+    @Update
+    suspend fun update(challenge: Challenge)
+
+    @Delete
+    suspend fun delete(challenge: Challenge)
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/challenge/model/Challenge.kt b/app/src/main/java/com/example/myapplication/challenge/model/Challenge.kt
index 071a672..019dc6b 100644
--- a/app/src/main/java/com/example/myapplication/challenge/model/Challenge.kt
+++ b/app/src/main/java/com/example/myapplication/challenge/model/Challenge.kt
@@ -1,19 +1,33 @@
 package com.example.myapplication.challenge.model
 
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.PrimaryKey
 import com.example.myapplication.category.model.Category
-import java.io.Serializable
+import com.example.myapplication.user.model.User
 
+@Entity(tableName = "challenges", foreignKeys = [
+    ForeignKey(
+        entity = User::class,
+        parentColumns = ["uid"],
+        childColumns = ["user_id"],
+        onDelete = ForeignKey.RESTRICT,
+        onUpdate = ForeignKey.RESTRICT,
+    ),
+    ForeignKey(
+        entity = Category::class,
+        parentColumns = ["uid"],
+        childColumns = ["category_id"],
+        onDelete = ForeignKey.RESTRICT,
+        onUpdate = ForeignKey.RESTRICT,
+    ),
+])
 data class Challenge(
+    @PrimaryKey val challenge_id: Int,
     val challenge_name: String,
     val challenge_status: Boolean,
-    val category: Category,
-) : Serializable
-
-fun getTestChallenge(): List<Challenge> {
-    val сategory = Category("Отжимания")
-    return listOf(
-        Challenge("Сделать 20 отжиманий", false, сategory),
-        Challenge("Сделать 10 отжиманий", false, сategory),
-        Challenge("Сделать 5 отжиманий", false, сategory),
-    )
-}
\ No newline at end of file
+    val category_id: Int,
+    @ColumnInfo(index = true)
+    val user_id: Int,
+)
diff --git a/app/src/main/java/com/example/myapplication/database/AppDatabase.kt b/app/src/main/java/com/example/myapplication/database/AppDatabase.kt
new file mode 100644
index 0000000..14f34bd
--- /dev/null
+++ b/app/src/main/java/com/example/myapplication/database/AppDatabase.kt
@@ -0,0 +1,79 @@
+package com.example.myapplication.database
+
+import java.util.concurrent.Flow
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.example.myapplication.category.dao.CategoryDao
+import com.example.myapplication.category.model.Category
+import com.example.myapplication.user.model.UserWithChallenges
+import com.example.myapplication.challenge.dao.ChallengeDao
+import com.example.myapplication.challenge.model.Challenge
+import com.example.myapplication.user.dao.UserDao
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.time.LocalDate
+
+@Database(entities = [User::class, Challenge::class, Category::class], version = 1, exportSchema = false)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun challengeDao(): ChallengeDao
+    abstract fun categoryDao(): CategoryDao
+    abstract fun userDao(): UserDao
+
+
+
+    companion object {
+        private const val DB_NAME: String = "sport-app-db"
+
+        @Volatile
+        private var INSTANCE: AppDatabase? = null
+
+        private suspend fun populateDatabase() {
+            INSTANCE?.let { database ->
+
+                val categoryDao = database.categoryDao()
+                val category1 = Category(3, "Кардио")
+                val category2 = Category(4, "Силовые тренировки")
+                categoryDao.insert(category1)
+                categoryDao.insert(category2)
+
+                val userDao = database.userDao()
+                val user1 = User(3, "test1", "1234", "John")
+                val user2 = User(4, "test2", "1234", "Ivan")
+                userDao.insert(user1)
+                userDao.insert(user2)
+
+                val challengeDao = database.challengeDao()
+                val challenge1 = Challenge(3, "Сделать 10 отжиманий", false, category2.uid, user1.uid)
+                val challenge2 = Challenge(4, "Пробежать 1 км", true, category1.uid, user2.uid)
+                challengeDao.insert(challenge1)
+                challengeDao.insert(challenge2)
+            }
+        }
+
+        fun getInstance(appContext: Context): AppDatabase {
+            return INSTANCE ?: synchronized(this) {
+                Room.databaseBuilder(
+                    appContext,
+                    AppDatabase::class.java,
+                    DB_NAME
+                )
+                    .addCallback(object : RoomDatabase.Callback() {
+                        override fun onCreate(db: SupportSQLiteDatabase) {
+                            super.onCreate(db)
+                            CoroutineScope(Dispatchers.IO).launch {
+                                populateDatabase()
+                            }
+                        }
+                    })
+                    .build()
+                    .also { INSTANCE = it }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/user/composeui/UserView.kt b/app/src/main/java/com/example/myapplication/user/composeui/UserView.kt
index 6738f69..89a25c7 100644
--- a/app/src/main/java/com/example/myapplication/user/composeui/UserView.kt
+++ b/app/src/main/java/com/example/myapplication/user/composeui/UserView.kt
@@ -13,47 +13,69 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import com.example.myapplication.user.model.getTestUser
 import com.example.myapplication.ui.theme.MyApplicationTheme
 import com.example.myapplication.R
+import com.example.myapplication.database.AppDatabase
+import com.example.myapplication.user.model.UserWithChallenges
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-fun UserView(id: Int) {
-    var user = getTestUser()[id]
-    Column(
-        horizontalAlignment = Alignment.CenterHorizontally,
-        modifier = Modifier
-            .padding(all = 10.dp)
-            .verticalScroll(rememberScrollState())) {
-        OutlinedTextField(modifier = Modifier.fillMaxWidth(), value = user.login, onValueChange = {}, readOnly = true,
-            label = {
-                Text(stringResource(id = R.string.user_login))
+    fun UserView(id: Int) {
+        val context = LocalContext.current
+        val (userWithChallanges, setUserWithChallanges) = remember { mutableStateOf<UserWithChallenges?>(null) }
+        LaunchedEffect(Unit) {
+            withContext(Dispatchers.IO) {
+                setUserWithChallanges(AppDatabase.getInstance(context).userDao().getByUid(id))
             }
-        )
-        OutlinedTextField(modifier = Modifier.fillMaxWidth(), value = user.fio, onValueChange = {}, readOnly = true,
-            label = {
-                Text(stringResource(id = R.string.user_fio))
-            }
-        )
-        user.challenges.forEachIndexed() { _, challenge ->
-            Row {
-                Text(text = challenge.challenge_name)
-                if (challenge.challenge_status) {
-                    Text(text = " - Выполнено")
+        }
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            modifier = Modifier
+                .padding(all = 10.dp)
+                .verticalScroll(rememberScrollState())
+        ) {
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = userWithChallanges?.user?.login.toString(),
+                onValueChange = {},
+                readOnly = true,
+                label = {
+                    Text(stringResource(id = R.string.user_login))
                 }
-                else {
-                    Text(text = " - В процессе")
+            )
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = userWithChallanges?.user?.fio.toString(),
+                onValueChange = {},
+                readOnly = true,
+                label = {
+                    Text(stringResource(id = R.string.user_fio))
+                }
+            )
+            userWithChallanges?.challenges?.forEachIndexed() { _, challenge ->
+                Row {
+                    Text(text = challenge.challenge_name)
+                    if (challenge.challenge_status) {
+                        Text(text = " - Выполнено")
+                    } else {
+                        Text(text = " - В процессе")
+                    }
                 }
             }
         }
     }
-}
+
 
 @Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
 @Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
diff --git a/app/src/main/java/com/example/myapplication/user/composeui/UsersList.kt b/app/src/main/java/com/example/myapplication/user/composeui/UsersList.kt
index 114dd28..297621f 100644
--- a/app/src/main/java/com/example/myapplication/user/composeui/UsersList.kt
+++ b/app/src/main/java/com/example/myapplication/user/composeui/UsersList.kt
@@ -12,24 +12,42 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import com.example.myapplication.composeui.navigation.Screen
-import com.example.myapplication.user.model.getTestUser
+import com.example.myapplication.database.AppDatabase
 import com.example.myapplication.ui.theme.MyApplicationTheme
+import com.example.myapplication.user.model.User
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.withContext
 
 @Composable
 fun UsersList(navController: NavController?) {
+    val context = LocalContext.current;
+    val users = remember { mutableStateListOf<User>() }
+    LaunchedEffect(Unit) {
+        withContext(Dispatchers.IO) {
+            AppDatabase.getInstance(context).userDao().getAll().collect { data ->
+                users.clear()
+                users.addAll(data)
+            }
+        }
+    }
     Column(
         horizontalAlignment = Alignment.CenterHorizontally,
         modifier = Modifier
             .padding(all = 10.dp)
             .verticalScroll(rememberScrollState())) {
-        getTestUser().forEachIndexed() { _, user ->
-            val userId = Screen.UserView.route.replace("{id}", (user.id).toString())
+        users.forEachIndexed() { _, user ->
+            val userId = Screen.UserView.route.replace("{id}", (user.uid).toString())
             Row(Modifier.padding(all = 10.dp)) {
                 Button(
                     modifier = Modifier
diff --git a/app/src/main/java/com/example/myapplication/user/dao/UserDao.kt b/app/src/main/java/com/example/myapplication/user/dao/UserDao.kt
new file mode 100644
index 0000000..e67a3fc
--- /dev/null
+++ b/app/src/main/java/com/example/myapplication/user/dao/UserDao.kt
@@ -0,0 +1,28 @@
+package com.example.myapplication.user.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.myapplication.user.model.User
+import com.example.myapplication.user.model.UserWithChallenges
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface UserDao {
+    @Query("select * from users order by fio asc")
+    fun getAll(): Flow<List<User>>
+
+    @Query("select * from users where users.uid = :uid")
+    suspend fun getByUid(uid: Int): UserWithChallenges
+
+    @Insert
+    suspend fun insert(user: User)
+
+    @Update
+    suspend fun update(user: User)
+
+    @Delete
+    suspend fun delete(user: User)
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/user/model/User.kt b/app/src/main/java/com/example/myapplication/user/model/User.kt
index 5c69529..97fd69b 100644
--- a/app/src/main/java/com/example/myapplication/user/model/User.kt
+++ b/app/src/main/java/com/example/myapplication/user/model/User.kt
@@ -1,22 +1,13 @@
 package com.example.myapplication.user.model
 
+import androidx.room.Entity
+import androidx.room.PrimaryKey
 import com.example.myapplication.challenge.model.Challenge
-import com.example.myapplication.challenge.model.getTestChallenge
-import java.io.Serializable
 
+@Entity(tableName = "users")
 data class User(
-    val id: Int,
+    @PrimaryKey val uid: Int,
     val login: String,
     val password: String,
     val fio: String,
-    val challenges: List<Challenge>,
-) : Serializable
-
-fun getTestUser(): List<User> {
-    val challenges = getTestChallenge()
-    return listOf(
-        User(0,"user1", "1234", "ivanov ivan", challenges),
-        User(1,"user2", "1234", "vasiliev ivan", challenges),
-        User(2,"user3", "1234", "listov ivan", challenges),
-    )
-}
\ No newline at end of file
+)
diff --git a/app/src/main/java/com/example/myapplication/user/model/UserWithChallenges.kt b/app/src/main/java/com/example/myapplication/user/model/UserWithChallenges.kt
new file mode 100644
index 0000000..2dbd882
--- /dev/null
+++ b/app/src/main/java/com/example/myapplication/user/model/UserWithChallenges.kt
@@ -0,0 +1,15 @@
+package com.example.myapplication.user.model
+
+import androidx.room.Embedded
+import androidx.room.Relation
+import com.example.myapplication.challenge.model.Challenge
+import com.example.myapplication.user.model.User
+
+data class UserWithChallenges(
+    @Embedded val user: User,
+    @Relation(
+        parentColumn = "uid",
+        entityColumn = "user_id"
+    )
+    val challenges: List<Challenge>
+)
diff --git a/build.gradle.kts b/build.gradle.kts
index 9861456..bd1eb8a 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,4 +2,5 @@
 plugins {
     id("com.android.application") version "8.1.1" apply false
     id("org.jetbrains.kotlin.android") version "1.8.10" apply false
+    id("com.google.devtools.ksp") version "1.8.20-1.0.11" apply false
 }
\ No newline at end of file