The people at CloudOn recently notified registered users that they are discontinuing the service from 15 March, 2015 and no new accounts are currently being accepted.
The app was launched three years ago and in the intervening period has become one of the most successful productivity apps in the App store, according to the developers.
They are now joining the Dropbox team and you can read the announcement here.
Registered users are being offered an extra 1GB of Dropbox storage for free or the opportunity to upgrade to Dropbox Pro for three months for free and get 1TB of space. If you’ve previously registered with CloudOn be sure to check your inbox (or junk mail in case you missed the email) to take advantage of the offer!