Pzizz - solve insomnia, get stress relief, boost energy! For the ultimate sleep at night, and incredible power naps during the day. Pzizz was the #1 Paid App in USA, UK, Australia, Canada, Belgium, Czech Republic, Denmark, India, Ireland. The new pzizz app includes both Sleep and Power Nap (previously called "Energiser") modules. No adverts. No limitations.