This app uses psychoacoustic sounds to help you relax and sleep better at night

Save 80 percent on a lifetime subscription to Pzizz Pro.

Nothing works properly when you’re tired. The only cure for this productivity slump is some rest. Pzizz Pro is an innovative app that uses psychoacoustic sounds to help you relax at bedtime and nap more easily during the day. The app can also track your sleep and help you focus on work. You can currently get a lifetime subscription for $49.99 via the PopSci Shop.

Around one third of us will struggle with a period of insomnia at some point in our lives. For some people, the sleepless nights can continue for weeks. Pzizz Pro has helped many people escape this vicious cycle and get back to their best. The app delivers a relaxing blend of ambient sounds and vocal hypnosis to soothe your racing mind.

The sounds are created by expert human composers, and then remixed by the app to suit your listening taste. With 100 billion possible sequences, you can listen all night if you need to. You can also set Pzizz Pro to fade out at night and wake you up gently in the morning.

Worth $600, lifetime access is currently just $49.99. This deal also offers major savings on a one-year subscription—just $19.99—if you wanted a shorter commitment to test this super helpful app.