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:

• Double Video Poker for 99 cents ($4 off): Poker game
• Grokion for 99 cents ($1 off): Action-adventure game
• Clox for 99 cents ($2 off): Clock demonstration tool
• Tikal for $1.99 ($2 off): Board game simulator
• Reiner Knizia's Ra for $1.99 ($2 off): Card game
• LEGO Harry Potter: Years 1-4 for $2.99 ($2 off, pictured): Adventure game
• Pocket Informant for $6.99 ($6 off): Calendar and task manager