UCSF and U ofMaryland have one as well. Although so far, UCSF and UPENN are the only REAL supplemental app I've seen with essay questions which require thought.
The other ones only want extra info (ie. address, schools attended, work exp., etc.) These are all questions that werer ansewred on the AADSAS app.....makes you wonder if they even look at the AADSAS app. 😕