This is a simple app (not official) with links to all the great sports-reference sites (defaults to the mobile where available).

http://www.baseball-reference.com/
http://www.pro-football-reference.com/
http://www.hockey-reference.com/
http://www.basketball-reference.com/
http://www.sports-reference.com/cbb/
http://www.sports-reference.com/cfb/

Pro baseball and pro football have all former players in the hint database. Soccer coming soon.

Sports Reference
Baseball
MLB
Football
NFL
Hockey
NHL
Basketball
NBA
College Football Basketball
NCAA
Soccer
Sports Stats Statistics Sabermetrics