diff --git a/lib/twine/formatters/abstract.rb b/lib/twine/formatters/abstract.rb
index 6596dec..5add120 100644
--- a/lib/twine/formatters/abstract.rb
+++ b/lib/twine/formatters/abstract.rb
@@ -16,12 +16,6 @@ module Twine
         @output_processor = Processors::OutputProcessor.new @strings, @options
       end
 
-      def iosify_substitutions(str)
-        # use "@" instead of "s" for substituting strings
-        str.gsub!(/%([0-9\$]*)s/, '%\1@')
-        return str
-      end
-      
       def set_translation_for_key(key, lang, value)
         if @strings.strings_map.include?(key)
           row = @strings.strings_map[key]
diff --git a/lib/twine/formatters/apple.rb b/lib/twine/formatters/apple.rb
index 9810a9f..bc7e50a 100644
--- a/lib/twine/formatters/apple.rb
+++ b/lib/twine/formatters/apple.rb
@@ -68,7 +68,6 @@ module Twine
               key.gsub!('\\"', '"')
               value = match[2]
               value.gsub!('\\"', '"')
-              value = iosify_substitutions(value)
               set_translation_for_key(key, lang, value)
               if last_comment
                 set_comment_for_key(key, last_comment)