Places such as Global Poker, PokerStars Play, and the World Series of Poker all offer free ways to play the game of holdem.
If you are looking for free Texas Holdem practice, the WSOP Poker app is one of the best ones out there. US players are allowed to play here and the free apps for iOS and Android are both equally amazing. WSOP Poker, however, is a free-to-play platform you can't use for anything more than free poker practice.
