diff --git a/scripts/ComposableSizeInApk.java b/scripts/ComposableSizeInApk.java
new file mode 100644
index 0000000..04b8017
--- /dev/null
+++ b/scripts/ComposableSizeInApk.java
@@ -0,0 +1,48 @@
+// Copyright (c) 2025, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import com.android.tools.r8.dex.ApplicationReader;
+import com.android.tools.r8.optimize.compose.ComposeReferences;
+import com.android.tools.r8.utils.AndroidApp;
+import com.android.tools.r8.utils.InternalOptions;
+import com.android.tools.r8.utils.timing.Timing;
+import com.google.common.collect.Streams;
+import java.io.IOException;
+import java.nio.file.Paths;
+
+public class ComposableSizeInApk {
+
+  public static void main(String[] args) throws IOException {
+    AndroidApp androidApp = AndroidApp.builder().addProgramFile(Paths.get(args[0])).build();
+    InternalOptions options = new InternalOptions();
+    ComposeReferences composeReferences = new ComposeReferences(options.dexItemFactory());
+    int size =
+        new ApplicationReader(androidApp, options, Timing.empty())
+            .read().classes().stream()
+                .flatMap(c -> Streams.stream(c.programMethods()))
+                .filter(m -> m.getAnnotations().hasAnnotation(composeReferences.composableType))
+                .filter(m -> m.getDefinition().hasCode())
+                .mapToInt(m -> m.getDefinition().getCode().asDexCode().codeSizeInBytes())
+                .sum();
+    if (size == 0) {
+      String name = "androidx.compose.runtime.Composable";
+      System.err.println("Warning: To collect the size of @Composable functions, ");
+      System.err.println("all @Composable annotations must be retained.");
+      System.err.println("");
+      System.err.println("This can be achieved using the following keep annotation:");
+      System.err.println("");
+      System.err.println("@KeepEdge(");
+      System.err.println("consequences =");
+      System.err.println("    @KeepTarget(");
+      System.err.println("        kind = KeepItemKind.ONLY_METHODS,");
+      System.err.println("        methodAnnotatedByClassName = \"" + name + "\",");
+      System.err.println("        constraints = {},");
+      System.err.println("        constrainAnnotations =");
+      System.err.println("            @AnnotationPattern(");
+      System.err.println("                name = \"" + name + "\",");
+      System.err.println("                retention = RetentionPolicy.CLASS)))");
+    }
+    System.out.println(size);
+  }
+}