Search engine features:
Special powers
Search 1st and/or 2nd click
Search your collection
Sort search results
Multiple matches like keywords (e.g. soldier or spy), team abilities, powers, and sets

Team Building features:
Feats/ATAs specific to a character
Objects and battle-field conditions

Based off of the java desktop version. Available for free at: http://heroclixleague.webs.com/teambuildertools.htm
Teams compatible with both apps