diff --git a/lib/motion/project/builder.rb b/lib/motion/project/builder.rb
index 1fe52587..21685d68 100644
--- a/lib/motion/project/builder.rb
+++ b/lib/motion/project/builder.rb
@@ -454,7 +454,13 @@ EOS
         if reserved_app_bundle_files.include?(res)
           App.fail "Cannot use `#{res_path}' as a resource file because it's a reserved application bundle file"
         end
-        copy_resource(res_path, File.join(app_resources_dir, res))
+        dest_path = File.join(app_resources_dir, res)
+        copy_resource(res_path, dest_path)
+      end
+
+      # Compile all .strings files
+      Dir.glob(File.join(app_resources_dir, '{,**/}*.strings')).each do |strings_file|
+        compile_resource_to_binary_plist(strings_file)
       end
 
       # Optional support for #eval (OSX-only).
@@ -511,6 +517,11 @@ EOS
       end
     end
 
+    def compile_resource_to_binary_plist(path)
+      App.info 'Compile', path
+      sh "/usr/bin/plutil -convert binary1 \"#{path}\""
+    end
+
     def copy_resource(res_path, dest_path)
       if !File.exist?(dest_path) or File.mtime(res_path) > File.mtime(dest_path)
         FileUtils.mkdir_p(File.dirname(dest_path))