diff --git a/app/src/main/java/foundation/e/apps/MainActivity.kt b/app/src/main/java/foundation/e/apps/MainActivity.kt
index f884e11ae6c3814ed6c3f02f7c496062ad094d45..9ff89f1e3d4473150bb7504a7b840e7d5918e865 100644
--- a/app/src/main/java/foundation/e/apps/MainActivity.kt
+++ b/app/src/main/java/foundation/e/apps/MainActivity.kt
@@ -18,8 +18,12 @@
 
 package foundation.e.apps
 
+import android.app.usage.StorageStatsManager
 import android.os.Build
 import android.os.Bundle
+import android.os.Environment
+import android.os.StatFs
+import android.os.storage.StorageManager
 import android.util.Log
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
@@ -34,6 +38,7 @@ import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import foundation.e.apps.application.subFrags.ApplicationDialogFragment
 import foundation.e.apps.databinding.ActivityMainBinding
+import foundation.e.apps.manager.database.fusedDownload.FusedDownload
 import foundation.e.apps.manager.workmanager.InstallWorkManager
 import foundation.e.apps.purchase.AppPurchaseFragmentDirections
 import foundation.e.apps.setup.signin.SignInViewModel
@@ -42,6 +47,8 @@ import foundation.e.apps.utils.enums.Status
 import foundation.e.apps.utils.enums.User
 import foundation.e.apps.utils.modules.CommonUtilsModule
 import kotlinx.coroutines.launch
+import java.io.File
+import java.util.*
 
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
@@ -161,11 +168,7 @@ class MainActivity : AppCompatActivity() {
         viewModel.downloadList.observe(this) { list ->
             list.forEach {
                 if (it.status == Status.QUEUED) {
-                    lifecycleScope.launch {
-                        viewModel.updateAwaiting(it)
-                        InstallWorkManager.enqueueWork(applicationContext, it)
-                        Log.d(TAG, "===> onCreate: AWAITING ${it.name}")
-                    }
+                    handleFusedDownloadQueued(it, viewModel)
                 }
             }
         }
@@ -213,6 +216,27 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private fun handleFusedDownloadQueued(
+        it: FusedDownload,
+        viewModel: MainActivityViewModel
+    ) {
+        lifecycleScope.launch {
+            if (!isStorageAvailable(it)) {
+                showSnackbarMessage(getString(R.string.not_enough_storage))
+                viewModel.updateUnAvailable(it)
+                return@launch
+            }
+            if (viewModel.internetConnection.value == false) {
+                showNoInternet()
+                viewModel.updateUnAvailable(it)
+                return@launch
+            }
+            viewModel.updateAwaiting(it)
+            InstallWorkManager.enqueueWork(applicationContext, it)
+            Log.d(TAG, "===> onCreate: AWAITING ${it.name}")
+        }
+    }
+
     private fun startInstallationOfPurchasedApp(
         viewModel: MainActivityViewModel,
         it: String
@@ -235,4 +259,39 @@ class MainActivity : AppCompatActivity() {
         binding.noInternet.visibility = View.VISIBLE
         binding.fragment.visibility = View.GONE
     }
+
+    // TODO: move storage availability code to FileManager Class
+    private fun isStorageAvailable(fusedDownload: FusedDownload): Boolean {
+        var availableSpace = 0L
+        availableSpace = calculateAvailableDiskSpace()
+        return availableSpace > fusedDownload.appSize + (500 * (1000 * 1000))
+    }
+
+    private fun calculateAvailableDiskSpace(): Long {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val storageManager = getSystemService(STORAGE_SERVICE) as StorageManager
+            val statsManager = getSystemService(STORAGE_STATS_SERVICE) as StorageStatsManager
+            val uuid = storageManager.primaryStorageVolume.uuid
+            try {
+                if (uuid != null) {
+                    statsManager.getFreeBytes(UUID.fromString(uuid))
+                } else {
+                    statsManager.getFreeBytes(StorageManager.UUID_DEFAULT)
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "calculateAvailableDiskSpace: ${e.stackTraceToString()}")
+                getAvailableInternalMemorySize()
+            }
+        } else {
+            getAvailableInternalMemorySize()
+        }
+    }
+
+    private fun getAvailableInternalMemorySize(): Long {
+        val path: File = Environment.getDataDirectory()
+        val stat = StatFs(path.path)
+        val blockSize = stat.blockSizeLong
+        val availableBlocks = stat.availableBlocksLong
+        return availableBlocks * blockSize
+    }
 }
diff --git a/app/src/main/java/foundation/e/apps/MainActivityViewModel.kt b/app/src/main/java/foundation/e/apps/MainActivityViewModel.kt
index 98820cb767e90e5ca06d79aa8ea9af76fb14a1bf..e6b4c91fa208287ca39ad198e7df354487c28ee1 100644
--- a/app/src/main/java/foundation/e/apps/MainActivityViewModel.kt
+++ b/app/src/main/java/foundation/e/apps/MainActivityViewModel.kt
@@ -159,7 +159,8 @@ class MainActivityViewModel @Inject constructor(
                     appIcon,
                     app.latest_version_code,
                     app.offer_type,
-                    app.isFree
+                    app.isFree,
+                    app.originalSize
                 )
                 updateFusedDownloadWithAppDownloadLink(app, fusedDownload)
             } catch (e: Exception) {
@@ -196,7 +197,8 @@ class MainActivityViewModel @Inject constructor(
             appIcon,
             app.latest_version_code,
             app.offer_type,
-            app.isFree
+            app.isFree,
+            app.originalSize
         )
         viewModelScope.launch {
             fusedManagerRepository.addFusedDownloadPurchaseNeeded(fusedDownload)
@@ -208,6 +210,10 @@ class MainActivityViewModel @Inject constructor(
         fusedManagerRepository.updateAwaiting(fusedDownload)
     }
 
+    suspend fun updateUnAvailable(fusedDownload: FusedDownload) {
+        fusedManagerRepository.updateUnavailable(fusedDownload)
+    }
+
     suspend fun updateAwaitingForPurchasedApp(packageName: String): FusedDownload? {
         val fusedDownload = fusedManagerRepository.getFusedDownload(packageName = packageName)
         authData.value?.let {
diff --git a/app/src/main/java/foundation/e/apps/api/fused/FusedAPIImpl.kt b/app/src/main/java/foundation/e/apps/api/fused/FusedAPIImpl.kt
index 7e850ad7321000b06a3bcdd500d19fbdc214574d..1a6cc16cc7e54d9c8413e114ad0a068ff70213b3 100644
--- a/app/src/main/java/foundation/e/apps/api/fused/FusedAPIImpl.kt
+++ b/app/src/main/java/foundation/e/apps/api/fused/FusedAPIImpl.kt
@@ -632,6 +632,7 @@ class FusedAPIImpl @Inject constructor(
             offer_type = this.offerType,
             origin = Origin.GPLAY,
             shareUrl = this.shareUrl,
+            originalSize = this.size,
             appSize = Formatter.formatFileSize(context, this.size),
             isFree = this.isFree,
             price = this.price
diff --git a/app/src/main/java/foundation/e/apps/api/fused/data/FusedApp.kt b/app/src/main/java/foundation/e/apps/api/fused/data/FusedApp.kt
index c676eeed2b8dbe60716bfab5757833e8f3c5f43d..b654cb64516b08f641c9cfbd82398bba8f343400 100644
--- a/app/src/main/java/foundation/e/apps/api/fused/data/FusedApp.kt
+++ b/app/src/main/java/foundation/e/apps/api/fused/data/FusedApp.kt
@@ -42,6 +42,7 @@ data class FusedApp(
     var status: Status = Status.UNAVAILABLE,
     var origin: Origin = Origin.CLEANAPK,
     val shareUrl: String = String(),
+    val originalSize: Long = 0,
     val appSize: String = String(),
     var source: String = String(),
     val price: String = String(),
diff --git a/app/src/main/java/foundation/e/apps/manager/database/fusedDownload/FusedDownload.kt b/app/src/main/java/foundation/e/apps/manager/database/fusedDownload/FusedDownload.kt
index 097539429cb256c61faa811f5684441982104e77..269298dd463b89a71811b4a1a434d5f650a7e4e0 100644
--- a/app/src/main/java/foundation/e/apps/manager/database/fusedDownload/FusedDownload.kt
+++ b/app/src/main/java/foundation/e/apps/manager/database/fusedDownload/FusedDownload.kt
@@ -22,5 +22,6 @@ data class FusedDownload(
     val versionCode: Int = 1,
     val offerType: Int = -1,
     val isFree: Boolean = true,
+    val appSize: Long = 0,
     var files: List<File> = mutableListOf()
 )
diff --git a/app/src/main/java/foundation/e/apps/updates/manager/UpdatesWorker.kt b/app/src/main/java/foundation/e/apps/updates/manager/UpdatesWorker.kt
index 5f410400213225a9d9505119dab355ac302cd95f..2aa21aa8a9d3111f1096a288b33d6faef3b8952c 100644
--- a/app/src/main/java/foundation/e/apps/updates/manager/UpdatesWorker.kt
+++ b/app/src/main/java/foundation/e/apps/updates/manager/UpdatesWorker.kt
@@ -134,7 +134,8 @@ class UpdatesWorker @AssistedInject constructor(
                 iconBase64,
                 fusedApp.latest_version_code,
                 fusedApp.offer_type,
-                fusedApp.isFree
+                fusedApp.isFree,
+                fusedApp.originalSize
             )
 
             updateFusedDownloadWithAppDownloadLink(fusedApp, authData, fusedDownload)
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f1a6ac7c4059690df9d6a95f6d20dfefbf85d464..2293cc8b99612eee60e33c3dda3150710ba05aeb 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -102,6 +102,7 @@
     <string name="install_blocked_google">Paid apps are not supported in App Lounge yet. Just a little more patience, it will soon be the case.</string>
     <string name="message_app_available_later">This app will be available later!</string>
     <string name="unknown_error">Unknown Error!</string>
+    <string name="not_enough_storage">There is not enough space available to download this application!</string>
 
     <!-- Updates Fragment -->
     <string name="update_all">Update All</string>