SOLTEC•Z™ provides an in-depth view of the SOLTEC•HEALTH™ System that works while you sleep to support your natural sleep cycles. Regain Delta sleep, the most important stage of sleep. Evaluate the quality of your sleep with the Z•TRACK™ Analyst and observe improvement in sleep provided by system use. Use during your day for relief from stress by running a Relaxation Session, provided in the Relax section of the app. Its easy to use and can be run while working, gaming, reading or watching TV. Naturally, the best results will come from a session devoted to pure relaxation. Others have found that running relaxation sessions during the day leads to more favorable results in overall sleep scores. You can track your own progress with this app.