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 Tap Pet Hotel and Feed Me Oil earning top iPhone sales, while Tap Zoo and Call of Atlantis HD emerge as 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. Tap Pet Hotel (Free) 2. Zynga Poker (Free) 3. Feed Me Oil ($0.99) 4. Tap Zoo (Free) 5. Angry Birds ($0.99) 6. Texas Poker (Free) 7. Infinity Blade ($2.99) 8. Smurfs' Village (Free) 9. Zombie Farm (Free) 10. Words With Friends ($2.99) Pocket Gems' microtransaction-supported management sim Tap Pet Hotel overtakes last week's chart champion Zynga Poker for top honors in this week's results. Chillingo's recent hit Feed Me Oil rises to third place in its debut week, as Tap Zoo lands at fourth place following a recent update. Angry Birds remains a popular pick at fifth place, meanwhile, as the free-to-play Smurfs' Village and Zombie Farm compete with paid titles Infinity Blade and Words With Friends in the chart's latter half. Here are this week’s top-grossing iPad applications: 1. Angry Birds HD ($4.99) 2. Tap Zoo (Free) 3. Smurfs' Village (Free) 4. Infinity Blade ($2.99) 5. Call of Atlantis HD (Free) 6. Texas Poker HD (Free) 7. Angry Birds Rio HD ($2.99) 8. Scrabble for iPad ($4.99) 9. Plants vs. Zombies HD ($6.99) 10. We Rule Deluxe for iPad (Free) The iPad version of Tap Zoo also sees an increase in popularity this week, and charts behind Angry Birds HD in today's results. Playrix's puzzler Call of Atlantis HD makes a rare chart appearance at fifth place this week, as Scrabble for iPad, Plants vs. Zombies HD, and We Rule Deluxe close out today's results.