Lotta! is a free and easy to use application for iPhone and iPod touch will generate pseudorandom number sequences for you favorite lottery.
The numbers are mathematically derived and thus not truly random. This should have little practical relevance, however, as the number generator is seeded with the current date and time, making each new number series almost unique.
Lotta! Touch the large green Play button or simply shake your device to generate a new number sequence. The numbers and other settings are remembered if you are disturbed by a phone call, or have to close the app.
As a nifty extra, you can touch a favorite number once to include it the current sequence (green square), or touch an unwanted number twice to exclude it (pink square). Another touch will reset the number back to normal.
You can also use the Reset button to clear all marked numbers. The maximum number of inclusions or exclusions is equal to the size of the current random sequence.