A Star Wars version of popular game Angry Birds has taken top place on the paid-for app chart for iPhone and iPad this week.
Angry Birds Star Wars, which was released a week ago, has knocked instant messaging app Whatsapp Messenger off the number one spot, where it has been for months.
The new app is based on traditional Angry Birds - which was hugely successful and even downloaded by Prime Minister David Cameron - but loosely follows the plot of Star Wars: Episode IV.
On the free charts, YouTube takes top place for the iPhone and Daniel Perez's Piano, a pocket piano app, takes top spot for the iPad.
Another popular game, Bad Piggies, remains in the top three for another week for the paid-for iPhone apps and is eighth in the paid-for iPad app charts.
Last week ITV Player was one spot above BBC iPlayer for free iPad apps, but this week it has fallen two places below iPlayer.
The Apple Official UK App Store Weekly Charts in full:
1. Angry Birds Star Wars - Rovio Entertainment Ltd
2. Whats App Messenger - WhatsApp Inc
3. Bad Piggies - Rovio Entertainment Ltd
4. Sonic Jump - Sega
5. Sleep Cycle Alarm Clock - Maciek Drejak Labs
6. Fifa 13 by EA Sports - Electronic Arts
7. Plague Inc - Ndemic Creations
8. Draw a Stickman: EPIC - Hicents.com, Inc
9. Tetris - Electronic Arts
10. Free Music Download Pro - Downloader and Player - BSOSoft
1. YouTube - Google Inc
2. Snake '97 Free - WMIT
3. Piano... - Obie Leff
4. Pocket Climber - PunchBox Studios
5. Extreme Road Trip 2 - Roofdog Games
6. Curiosity - what's inside the cube? - 22Cans
7. Flashlight - iHandy Inc
8. Podcasts - Apple
9. Find My iPhone - Apple
10. Don't Forget The Lyrics - Koala DE Development SC.
1. Angry Birds Star Wars HD - Rovio Entertainment Ltd
2. The Room - Fireproof Games
3. Garageband - Apple
4. Fifa 13 by EA Sports - Electronic Arts
5. iSpy Cameras - SKJM, LLC
6. Pages - Apple
7. Angry Birds Star Wars - Rovio Entertainment
8. Bad Piggies HD - Rovio Entertainment Ltd
9. Need For Speed: Most Wanted - Electronic Arts
10. Minecraft - Pocket Edition - Mojang
1. Piano - Daniel Perez
2. Argos for iPad - Argos Ltd
3. Video Tube Free for YouTube - Yau You Music Video Professionals - Tube Studio
4. Extreme Road Trip 2 - Roofdog Games
5. Piano... - Obie Leff
6. Pocket Climber HD - PunchBox Studios
7. Skype for iPad - Skype Communications S.a.r.l
8. BBC iPlayer - Media Applications Technologies Limited
9. Virgin TV Anywhere - Virgin Media
10. ITV Player - ITV