Current applications in the Android Market:
* Speedy Memory Game free 
Tehillim  $1.99  
Tehillim (English Version)  $1.99  
 * Speedy Memory Game: (download)
   Speedy Memory is a game based on memory and time.
    it is a nice game for memory and brain training.

 The Differences between the Siddur Paid and Free Versions:
 Free and Paid Versions Differences Paid Version
 Free Version
 Kriat Shema AlHamitta    
 Birkat HaMazon    
 Birkat Meein Shalosh    
 Boreh Nefashot    
 Tfilat HaDerech    
 Save Application Settings
(Font Size, Backgroung Color, Nikud and etc.)
 Move to SD Card