Chanter

Chanter is a tool that will help you to enhance your meditation skills.

Using the Neurosky Mindwave Mobile, MindWave, or Mindset, this tool gives you instant audio feedback about your mental state while you meditate. When your meditation level changes, the tone of a sound loop changes accordingly. 

Chanter is easy to use. Set the length of your session, pick your favorite mantra sound and you're ready to go. After each session a chart is generated, which shows you your meditation level over time.