diff --git a/app/src/main/java/dev/alimansour/mytasks/MainActivity.kt b/app/src/main/java/dev/alimansour/mytasks/MainActivity.kt
index b47c3bf..79b6dc8 100644
--- a/app/src/main/java/dev/alimansour/mytasks/MainActivity.kt
+++ b/app/src/main/java/dev/alimansour/mytasks/MainActivity.kt
@@ -9,6 +9,7 @@ import androidx.activity.enableEdgeToEdge
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.lifecycle.lifecycleScope
 import dev.alimansour.mytasks.core.ui.theme.MyTasksTheme
+import dev.alimansour.mytasks.core.ui.view.DebugCheckerBanner
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
@@ -36,6 +37,9 @@ class MainActivity : ComponentActivity() {
         setContent {
             MyTasksTheme {
                 MainApp()
+                if (BuildConfig.DEBUG) {
+                    DebugCheckerBanner()
+                }
             }
         }
     }
diff --git a/app/src/main/java/dev/alimansour/mytasks/core/ui/theme/Color.kt b/app/src/main/java/dev/alimansour/mytasks/core/ui/theme/Color.kt
index 5bfbe9a..f5d3589 100644
--- a/app/src/main/java/dev/alimansour/mytasks/core/ui/theme/Color.kt
+++ b/app/src/main/java/dev/alimansour/mytasks/core/ui/theme/Color.kt
@@ -18,3 +18,4 @@ val OnPrimaryContainerLight = Color(0xFF4D996B)
 val LightOnPrimary = Color(0xFFFFFFFF)
 val LightText = Color(0xFF191C18)
 val LightSecondaryText = Color(0xFF414940)
+val BurgundyPurple = Color(color = 0xFFB71C1C)
diff --git a/app/src/main/java/dev/alimansour/mytasks/core/ui/view/DebugCheckerBanner.kt b/app/src/main/java/dev/alimansour/mytasks/core/ui/view/DebugCheckerBanner.kt
new file mode 100644
index 0000000..988cd07
--- /dev/null
+++ b/app/src/main/java/dev/alimansour/mytasks/core/ui/view/DebugCheckerBanner.kt
@@ -0,0 +1,112 @@
+package dev.alimansour.mytasks.core.ui.view
+
+import android.graphics.Paint
+import android.graphics.Typeface
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.width
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.nativeCanvas
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.platform.LocalLayoutDirection
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.zIndex
+import dev.alimansour.mytasks.core.ui.theme.BurgundyPurple
+
+private const val LTR_ROTATION_DEGREES = -45f
+private const val RTL_ROTATION_DEGREES = 45f
+private const val PIVOT_OFFSET_FACTOR = 0.3f
+private const val BANNER_RECT_HEIGHT_MULTIPLIER = 1.6f
+private const val BANNER_RECT_WIDTH_MULTIPLIER = 1.5f
+private const val BANNER_CANVAS_SIZE_DP_VALUE = 70
+private const val BANNER_FONT_SIZE_SP_VALUE = 10
+
+@Composable
+fun DebugCheckerBanner(modifier: Modifier = Modifier) {
+    if (LocalInspectionMode.current) return
+
+    val bannerText = "DEBUG"
+    val bannerCanvasSize = BANNER_CANVAS_SIZE_DP_VALUE.dp
+    val bannerFontSize = BANNER_FONT_SIZE_SP_VALUE.sp
+    val bannerTypeface = Typeface.create(Typeface.DEFAULT, Typeface.BOLD)
+    val layoutDirection = LocalLayoutDirection.current
+
+    Box(
+        modifier = modifier.fillMaxSize(),
+    ) {
+        Canvas(
+            modifier =
+                Modifier
+                    .align(Alignment.TopStart)
+                    .width(bannerCanvasSize)
+                    .height(bannerCanvasSize)
+                    .zIndex(Float.MAX_VALUE),
+        ) {
+            val textPaint =
+                Paint().apply {
+                    isAntiAlias = true
+                    color = Color.White.toArgb()
+                    textSize = bannerFontSize.toPx()
+                    textAlign = Paint.Align.CENTER
+                    typeface = bannerTypeface
+                }
+
+            val textRotationDegrees =
+                if (layoutDirection == LayoutDirection.Ltr) {
+                    LTR_ROTATION_DEGREES
+                } else {
+                    RTL_ROTATION_DEGREES
+                }
+
+            val rotationPivotX =
+                if (layoutDirection == LayoutDirection.Ltr) {
+                    size.width * PIVOT_OFFSET_FACTOR
+                } else {
+                    size.width * (1f - PIVOT_OFFSET_FACTOR)
+                }
+            val rotationPivotY = size.height * PIVOT_OFFSET_FACTOR
+
+            val bannerRectHeight = bannerFontSize.toPx() * BANNER_RECT_HEIGHT_MULTIPLIER
+            val bannerRectWidth = size.width * BANNER_RECT_WIDTH_MULTIPLIER
+
+            val bannerBgPaint =
+                Paint().apply {
+                    isAntiAlias = true
+                    color = BurgundyPurple.toArgb()
+                    style = Paint.Style.FILL
+                }
+
+            drawContext.canvas.nativeCanvas.save()
+            drawContext.canvas.nativeCanvas.rotate(textRotationDegrees, rotationPivotX, rotationPivotY)
+
+            val rectLeft = rotationPivotX - bannerRectWidth / 2f
+            val rectTop = rotationPivotY - bannerRectHeight / 2f
+            val rectRight = rotationPivotX + bannerRectWidth / 2f
+            val rectBottom = rotationPivotY + bannerRectHeight / 2f
+
+            drawContext.canvas.nativeCanvas.drawRect(
+                rectLeft,
+                rectTop,
+                rectRight,
+                rectBottom,
+                bannerBgPaint,
+            )
+
+            drawContext.canvas.nativeCanvas.drawText(
+                bannerText,
+                rotationPivotX,
+                rotationPivotY - (textPaint.descent() + textPaint.ascent()) / 2f,
+                textPaint,
+            )
+            drawContext.canvas.nativeCanvas.restore()
+        }
+    }
+}
diff --git a/app/src/main/java/dev/alimansour/mytasks/di/module/UseCaseModule.kt b/app/src/main/java/dev/alimansour/mytasks/di/module/UseCaseModule.kt
index 4ed2390..f3c2244 100644
--- a/app/src/main/java/dev/alimansour/mytasks/di/module/UseCaseModule.kt
+++ b/app/src/main/java/dev/alimansour/mytasks/di/module/UseCaseModule.kt
@@ -12,6 +12,7 @@ import org.koin.core.annotation.Single
 @Module(includes = [ RoomModule::class])
 @ComponentScan
 class UseCaseModule {
+
     @Single
     fun provideAddTaskUseCase(repository: TasksRepository) = AddTaskUseCase(repository)