Wish I had this earlier – Banner - Free Version Review

I was in a meeting in a small room and it was so humid in the room. I was wishing I had a way to get the attention of the person sitting across the table from me (he was next to the air conditioner) and silently tell him to please turn it on. So after the meeting I searched for such an app and found this.
Review by halwaterman on Banner - Free Version.