Metal Kit Sound Effect Plug-in is a free multimedia plug-in developed by Rev Soft Inc, also known as Revontulet Soft Inc and Revontulet Studio. It is a subcategory of the music and radio category, designed for Android platforms. It is important to note that this plug-in cannot run alone, and it requires the installation of Walk Band and Perfect Piano from Google Play.

To use Metal Kit Sound Effect Plug-in, users must enter the Drum Machine or Drum Kit screen of Walk Band, select the switch instrument icon, and the Metal Kit icon will automatically appear. Users can then select it and load the new sound. The plug-in offers a variety of metal sounds to enhance the user's experience.

Overall, Metal Kit Sound Effect Plug-in for Walk Band is a great addition to the app for those who enjoy metal music. However, it is limited to users who have Walk Band and Perfect Piano installed, which may be a drawback for those who do not wish to install additional apps.