Is there a mobile version?

There is an alpha version available for Android, with iOS in the works.

Under no circumstances should you be using keys with large holdings in mobile yet. 

Mobile is a new development and is in Alpha. Create a new account and move it some EOS to use in the mobile app if you choose to participate in mobile alpha. At Scatter we never release projects into production without real world testing first. We value your security above all else and always make sure to take precautions with new software. Follow the safety guidelines please, we don't want you getting harmed.