Below are downloads of several apps which have dropped in price and are available for a limited time from Apple's App Store. These apps are created for the iPhone and iPod touch; they're also compatible with the iPad but will run at a significantly lower resolution. (Check the individual apps for further information.) Many are at the lowest total price we've seen. The deals:

• Treasure Defense HD for 99 cents ($1 off): Tower defense game
• C25K (Couch to 5K) for 99 cents ($2 off): Run training assistant
• Slide To Do for 99 cents ($1 off): Lock screen to-do list
• Earth And Legend HD for $1.99 ($1 off): Role-playing game
• Sonic & SEGA All-Stars Racing (pictured) for $1.99 ($1 off): Racing game
• Catan for $3.99 ($1 off): Strategy game
• iTeleport for $19.99 ($5 off): VNC client