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:

• WORMS for 99 cents (pictured, $4 off): Turn-based battle game
• Calcul for 99 cents ($1 off): Math solving tool
• Etch for 99 cents ($2 off): Drawing tool
• iHaggle: Hidden Treasure Street for 99 cents ($3 off): Scavenger hunt
• PhotoNonStop for 99 cents ($2 off): Image access tool
• Weather Personal for $1.99 ($1 off): Weather-tracking tool