To copy a friend's skin, fetch their skin, long touch the preview image and then touch apply skin.
If you want to save a skin to your phone, long touch the image preview. This also works if you want to save the preview from a certain rotation.
You can now view a random skin by long pressing the skin preview and touching random skin. Wait a few seconds and you have a random skin and username!
Memorable Skin can be used with Block Launcher or Pocket Tool to apply a skin to the Pocket Edition of Minecraft. Follow the instructions within the 'Help' section of the application (long touch the skin preview and select 'Help'). Remember, skins do not work on multiplayer!