More app sales for Mac and iOS over the Independence Day weekend

July 4th is the weekend for fireworks, BBQs, and good times in the United States of America -- not to mention some excellent app sales. Here's a few more:

• MacGameStore has a big Independence Day sales weekend going on, featuring Mac versions of Civ IV for $14.95, Spore for $9.99, and Call of Duty 4: Modern Warfare for $39.95.

• MacPhun's dropped four apps down to the low price of free for the weekend: Silent Film Director, Cartoonatic, Doodle Cam, and ArtCamera.

• G5 Entertainment is dropping Romance of Rome, Virtual City, and Supermarket Management down to $.99 on the iPhone, and $2.99 on the iPad. Supermarket Mania 2 is also on sale, for $2.99 on iPhone and $4.99 on the tablet.

• Flickr HD, one of our Daily Apps, has a dramatic sale this weekend: $0.99 (regularly $4.99).

• Rockin Ted is another free app to check out.

• Finally, Steam is having a huge Summer Camp sale this weekend, with dozens of rotating titles going on sale every day. There are a lot of games in there, and a lot of great deals -- keep an eye out for the "SteamPlay" icon, as all of those games work on both Mac and PC.

I'm pretty sure most of the sales going up this weekend are out at this point, but we'll keep an eye out for any more going on. We also occasionally tweet out app sales and updates on our Twitter account, so follow us over there if you want up-to-the-minute deals on Mac and iOS software!