The first rule of mindfulness might be to switch your smartphone off. From checking emails at bedtime to constant, needy push notifications from mobile games, our phones can often feel like they amplify our daily stress.Turning to your smartphone for respite from the digital clutter may feel as ridiculous as holding an Alcoholics Anonymous meeting in a pub, with your inbox, social networks and Candy Crush Saga just a couple of taps away. Still, mobile meditation apps are trying to help. There are hundreds available, although the pool of genuinely useful ones is much smaller. This article lists five meditation apps to try out.