<p>Yeah, my counselor said that in the RD round even whether or not you use the Princeton app may come into play (for gauging interest). Although I think they signed a contract with the common app company saying they legally are not allowed to differentiate (Princeton rep who came to my school said so, he also said to go with the Princeton app if it wouldn't kill me not to use common app).</p>
<p>I'm using the princeton app since it gives more space, as other people mentioned.</p>