By Dr. Liji Thomas, MD Reviewed by Lauren Hardaker Mar 25 2026 Sleep apps promise better rest through data-driven insights, but new research reveals they may also heighten worry in some users. So who truly benefits?  Study: Sleep in the age of technology: the use of sleep apps and perceived impact on sleep and sleep habits . Image credit: Andrey_Popov/Shutterstock.com Sleep apps are computer applications that track an individual’s sleep. But opinions differ on their usefulness. A study