diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DBUtils.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DBUtils.java
index f5e7bf90c..a04b8dfbb 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DBUtils.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DBUtils.java
@@ -22,13 +22,15 @@ package org.eehouse.android.xw4;
 
 import android.content.ContentValues;
 import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteConstraintException;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 import android.database.sqlite.SQLiteStatement;
-import android.graphics.Bitmap;
 import android.graphics.Bitmap.CompressFormat;
+import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Environment;
 import android.text.TextUtils;
@@ -2563,6 +2565,32 @@ public class DBUtils {
         }
     }
 
+    // Copy my .apk to the Downloads directory, from which a user could more
+    // easily share it with somebody else. Should be blocked for apks
+    // installed from the Play store since viral distribution isn't allowed,
+    // but might be helpful in other cases. Need to figure out how to expose
+    // it, and how to recommend transmissions. E.g. gmail doesn't let me
+    // attach an .apk even if I rename it.
+    static void copyApkToDownloads( Context context )
+    {
+        try {
+            String myName = context.getPackageName();
+            PackageManager pm = context.getPackageManager();
+            ApplicationInfo appInfo = pm.getApplicationInfo( myName, 0 );
+
+            File srcPath = new File( appInfo.publicSourceDir );
+            File destPath = Environment
+                .getExternalStoragePublicDirectory( Environment.DIRECTORY_DOWNLOADS );
+            destPath = new File( destPath, context.getString(R.string.app_name) + ".apk" );
+
+            FileInputStream src = new FileInputStream( srcPath );
+            FileOutputStream dest = new FileOutputStream( destPath );
+            copyFileStream( dest, src );
+        } catch ( Exception ex ) {
+            Log.e( TAG, "copyApkToDownloads(): got ex: %s", ex );
+        }
+    }
+
     private static String getVariantDBName()
     {
         return String.format( "%s_%s", DBHelper.getDBName(),