For the tooltip on all items (or almost all?), regardless of whether it is a Heroic item or dropped from a boss on Heroic, it says:
Boss: [insert boss name here] (Heroic)
I use the latest version of the app on my iPhone 4.
Threats of violence. We take these seriously and will alert the proper authorities.
Posts containing personal information about other players. This includes physical addresses, e-mail addresses, phone numbers, and inappropriate photos and/or videos.
Harassing or discriminatory language. This will not be tolerated.