The iPhone 4

Here's how you become an app store millionaire (interview)

While the average app store developer might make under $10K a year from his or her apps, Joe Kaufman has managed to generate millions of downloads to his hit Lost City and Secret of Grisly Manor apps, generating massive revenue and making him a self-made millionaire.

Weird apps: Buy Einstein’s brain for $9.99

Though Albert Einstein, one of the greatest physicists in history, is long gone, his brain lives on. No, not zombie-style; slides of the man’s brain came out in iPad app form today for anyone to study like a scientist.