As a promotion for the PSP version, Square Enix released a cache of Tactics Ogre: Let Us Cling Together assets as an iPhone app. You can view art, listen to music, and read about the game. Unfortunately, it doesn’t come with a demo or anything like that. It’s just art, movies, music, and information.
Unlike the Larger than Life galleries for Final Fantasy XIII and Final Fantasy VII: Advent Children, the Tactics Ogre: Let Us Cling Together app is free to download.