The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, and iPad which have dropped in price, as listed below. At up to $2 off, most are at or near the lowest prices we've seen. The deals, all with applicable platforms noted:

• The Monster at the End of This Book...starring Grover! for iPhone, iPod touch, and iPad for 99 cents ($4 off): Children's story
• Skyriders for iPhone, iPod touch, and iPad for 99 cents (pictured, $1 off): Platforming and racing game
• Another Monster at the End of This Book...Starring Grover & Elmo! for iPhone, iPod touch, and iPad for 99 cents ($4 off): Children's story
• Photo Measures for iPhone, iPod touch, and iPad for 99 cents ($4 off): Measuring tool
• iTV Shows 2 for iPhone, iPod touch, and iPad for 99 cents ($2 off): TV show viewing tool
• Acheron Prime for iPhone, iPod touch, and iPad for 99 cents ($5 off): Space shooting role-playing game
• Mensa Academy for iPhone, iPod touch, and iPad for 99 cents ($1 off): Brain training game