Instagram CEO Kevin Systrom previously confirmed that an Android version of the company’s popular iOS application was in the works, even claiming that “in some ways its better than our iPhone app.” On Saturday, the company launched a teaser page, allowing users to sign up to become “first in line for Instagram for Android.” The release date for Instagram’s Android app is still unknown, however. As an iOS exclusive, Instagram has already racked up more than 27 million registered users, making it one of the App Store’s most popular photography apps. With an Android release imminent, Instagram will soon solidify its position as one of the top photo-sharing app makers in the mobile world.