Insomnia

ITV's Tonight programme investigates the UK's sleep crisis, as one in 10 are now said to be suffering with insomnia and sleep apnoea affects 1.5 million.

The app provides a digital six-week self-help programme involving a sleep test, weekly interactive CBT-I sessions and keeping a diary about sleeping patterns.

Thought a nightcap is a good way to get to sleep? Think again.