Whoa, that was fast! Just in January, Apple reported that iCloud had 85 million users. Today, during Apple’s quarterly earnings call, Apple CFO Peter Oppenheimer revealed that the company’s iCloud service has attracted 125 million users in roughly six months since the service launch, and it seems that Apple’s iCloud user base continues to grow at a steady pace.

Apple CEO Tim Cook also revealed that the service had hit 100 million users, which breaks down to an average of over 13 million new iCloud users since January.

iCloud is a free service that stores all your content and seamlessly syncs it across all your devices. It replaced the company’s predecessor paid subscription service called MobileMe with a more seamless and free service. The service being offered for free would probably explain the tremendous growth iCloud is seeing.