Notion Music is currently running a contest that ends on July 15. Ten winners will get a free t-shirt.
T-shirt contest: http://www.facebook.com/pages/NOTION-Music/30903009783?sk=app_222019221166123
The full version of Progression is also out now for $5 and it's super fun and useful. There is also a free version available. Progression app for those interested: http://notionmusic.com/progressionipad.html