Every week, Gamasutra rounds up the top-grossing iPhone, iPod Touch and iPad applications, as current that day in the iTunes App Store. This week's U.S. revenue charts see Scribblenauts Remix and Contract Killer: Zombies earning top iPhone sales, while My Country and DragonVale remain big sellers on the iPad.

These charts allow end users to see who is making the most money on the App Store that day. It differs significantly from the Top 10 Games chart, which is ranked by sales, and therefore is dominated by lower-priced titles that sell more copies.

Data comes courtesy of Apple's public sales information. All titles in the App Store's "Games" category are considered in chart rankings.

This week's top-grossing iPhone titles are:

1. Poker by Zynga (Free)
2. DragonVale (Free)
3. Scribblenauts Remix ($4.99)
4. Contract Killer: Zombies (Free)
5. Angry Birds ($0.99)
6. Infinity Blade ($5.99)
7. Words With Friends ($0.99)
8. Tap Fish 2 (Free)
9. Real Racing 2 ($2.99)
10. Tap Pet Hotel (Free)

Poker by Zynga and Backflip Studios' DragonVale once again occupy the top two spots in the iPhone's revenue chart, as Scribblenauts Remix remains a steady seller in its second week of release.

Glu's first-person shooter Contract Killer: Zombies claims fourth place in its debut week, as Chair's Infinity Blade, Newtoy's Words With Friends, and Firemint's Real Racing 2 return to the top ten following recent content-expanding updates.

Here are this week's top-grossing iPad applications:

1. My Country (Free)
2. DragonVale (Free)
3. Real Racing 2 HD ($3.99)
4. Smurfs' Village (Free)
5. Scribblenauts Remix ($4.99)
6. Contract Killer: Zombies (Free)
7. Angry Birds HD ($4.99)
8. Tap Pet Hotel (Free)
9. Poker by Zynga (Free)
10. Tiny Zoo Friends (Free)

Game Insight's Android-ported sim title My Country emerges as today's top-grossing iPad app, beating former chart champions DragonVale and Smurfs' Village.

Firemint's Real Racing 2 HD ranks in at third place after a recent iOS 5 update, while Contract Killer: Zombies overtakes Angry Birds HD in its premiere week.