The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad which have dropped in price, as listed below. At up to $15 off, each is at the lowest price we've seen. The deals, all with applicable platforms noted:

• Momento for iPhone and iPod touch for 99 cents ($2 off): Diary / journaling software
• Genius Scan+ for iPhone and iPod touch for 99 cents ($2 off): Pocket scanning software
• RISK for iPhone, and iPod touch for 99 cents ($2 off): Re-imagined board game
• THE KING OF FIGHTERS-i- for iPhone and iPod touch for $2.99 (pictured, $4 off): Fighting game
• Dangerous for iPhone, iPod touch, and iPad for $8.99 ($1 off): Space adventure game