The top free iPhone applications by country* for the week, by number of downloads, recorded on December 27.


1. USA
Tap Tap Revenge 4 (games)

Described by the manufacturers as 'easy to learn but takes a lifetime to master,' Tap Tap Revenge involves players tapping their screens in time with the beat of the music. Users can play by themselves or with others across the internet. This latest version features new tracks from artists such as Lady Gaga and Ke$ha.

2. UK
iTunes 12 Days of Christmas (entertainment)
This app from iTunes allows users to download a 'free iTunes gift' every day from December 26 to January 6. Gift available include music, TV episodes and iBooks.

3. France
The Mystery of the Crystal Portal (games)
Players have to help journalist Nicole Rankwist to solve the mystery behind the dissapearance of her archeologist father and find the truth behind the 'crystal portal,' a device which has the potential to change humanity.

4. Canada
Tap Tap Revenge 4 (games)
See 'Tap Tap Revenge 4'

5. Japan
??? (utilities)
Roughly translated as 'Fan Deco' in English, this app allows users to change the text, color and background of their email provider. The app comes with 1,200 different emoticons.

6. Australia
Tap Tap Revenge 4 (games)
See 'Tap Tap Revenge 4'

7. Germany
12 Tage Geschenke von iTunes (entertainment)
The German version of the '12 days of Christmas' app - see 'iTunes 12 Days of Christmas'.

8. China
Funny Sango TD (games)
A tower defense style game very loosely themed around China's early Three Kingdoms period.  The game features three different styles of defenders and eleven variations of attackers, each with various attributes and powers.

9.  Italy
The Mystery of the Crystal Portal (games)
See 'The Mystery of the Crystal Portal'

10. Korea
??? ?? ?? - Age My Face (entertainment)
This app allows users to see what they might look like when they are older.  Users simply import a photo from their iPhone and then have the chance see what they might look like at a variety of ages by using eight different 'age masks'.