diff --git a/core/local/src/androidMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt b/core/local/src/androidMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
index ad35713..ef1a83e 100644
--- a/core/local/src/androidMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
+++ b/core/local/src/androidMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
@@ -7,11 +7,18 @@ import com.theophiluskibet.caloree.local.database.CaloreeDatabase
 import kotlinx.coroutines.Dispatchers
 import org.koin.dsl.module
 
+/**
+ * provides an instance of db implementation in android
+ */
 actual fun localModule() =
     module {
         single<CaloreeDatabase> { createDatabase(context = get()) }
     }
 
+/**
+ * creates the db
+ * @param context current state of the application
+ */
 fun createDatabase(context: Context): CaloreeDatabase {
     val dbFile = context.getDatabasePath("caloree.db")
     return Room.databaseBuilder<CaloreeDatabase>(
diff --git a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/dao/CaloreeDao.kt b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/dao/CaloreeDao.kt
index 3c8504c..5f69ec4 100644
--- a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/dao/CaloreeDao.kt
+++ b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/dao/CaloreeDao.kt
@@ -6,17 +6,39 @@ import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import com.theophiluskibet.caloree.local.entities.CaloreeEntity
 
+/**
+ * api to provide functionality to access the database
+ */
 @Dao
 interface CaloreeDao {
+    /**
+     * adds a list of calories to db
+     */
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun saveCalories(list: List<CaloreeEntity>)
 
+    /**
+     * retreives all the available calories from the db
+     */
     @Query("SELECT * FROM caloree_table")
     suspend fun getCalories(): List<CaloreeEntity>
 
+    /**
+     * retreives a single calorie matching provided name from the db
+     */
     @Query("SELECT * FROM caloree_table WHERE name=:name")
     suspend fun getCalory(name: String): CaloreeEntity
 
+    /**
+     * retreives a list of calories matching the provided names from the getCaloriesByNames
+     * @sample
+     * ```
+     * val names = listOf("rice","banana")
+     *
+     * getCalories(names)
+     * 
+     * ```
+     */
     @Query("SELECT * FROM caloree_table WHERE name IN(:names)")
     suspend fun getCaloriesByNames(names: List<String>): List<CaloreeEntity>
 }
diff --git a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/database/CaloreeDatabase.kt b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/database/CaloreeDatabase.kt
index 65b1f06..803e521 100644
--- a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/database/CaloreeDatabase.kt
+++ b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/database/CaloreeDatabase.kt
@@ -5,6 +5,11 @@ import androidx.room.RoomDatabase
 import com.theophiluskibet.caloree.local.dao.CaloreeDao
 import com.theophiluskibet.caloree.local.entities.CaloreeEntity
 
+/**
+ * used to create the database
+ * @param entities list of available tables in the app
+ * @param version current version of the db
+ */
 @Database(entities = [CaloreeEntity::class], version = 1)
 abstract class CaloreeDatabase : RoomDatabase() {
     abstract fun caloreeDao(): CaloreeDao
diff --git a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/entities/CaloreeEntity.kt b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/entities/CaloreeEntity.kt
index 59b1ce1..620306c 100644
--- a/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/entities/CaloreeEntity.kt
+++ b/core/local/src/commonMain/kotlin/com/theophiluskibet/caloree/local/entities/CaloreeEntity.kt
@@ -3,6 +3,9 @@ package com.theophiluskibet.caloree.local.entities
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 
+/**
+ * represents a single calorie in the db
+ */
 @Entity(tableName = "caloree_table")
 data class CaloreeEntity(
     @PrimaryKey(autoGenerate = false)
diff --git a/core/local/src/iosMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt b/core/local/src/iosMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
index fa96a2b..64114f9 100644
--- a/core/local/src/iosMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
+++ b/core/local/src/iosMain/kotlin/com/theophiluskibet/caloree/local/di/LocalModule.kt
@@ -9,11 +9,17 @@ import kotlinx.coroutines.IO
 import org.koin.dsl.module
 import platform.Foundation.NSHomeDirectory
 
+/**
+ * provides an instance of db implementation in ios
+*/
 actual fun localModule() =
     module {
         single<CaloreeDatabase> { createDatabase() }
     }
 
+/**
+ * creates the db
+ */
 fun createDatabase(): CaloreeDatabase {
     val dbFilePath = NSHomeDirectory() + "/caloree.db"
     return Room.databaseBuilder<CaloreeDatabase>(