But anyone not using the app will see nothing at all.

As ever, feel free to contact userhelp@guardian.co.uk for further assistance and advice on using the app.

I was even able to press the home button and use other apps while the music continued to play in the background.

Premium plus accounts are no longer necessary to use the app.

I always presumed most people using the app would have unlimited cards.

I'm not using the app, but my friends are.

Actions made using the app are expressed on users' profile pages.

I've used the app on my wife's iPhone and I think our development team did a great job.

To use the app, set a time by which you must wake up, and simply place your phone on your mattress, face down.