You can set the level of stress you are feeling, then lets you scream until you don't feel the stress level has been relieved.

Disclaimer:
There are medical evidences that screaming helps to release stress and tension, but this app is a game for fun,
Dr.Screamz has no medical or scientific bases, and let you have fun alone or with your friends,

Scream in the news:
Dr. Screamz can help to decrease stress if you know about some effective techniques of stress relief.
Here some useful links:
"Stress Relief Strategies Scream or yell into a pillow if you need to." - See more at: http://www.stresstostrength.com/stress-relief-tools/#sthash.MOWKz0wM.dpuf
"Stressed? Try screaming..."  https://worldpulse.com/node/28602
"you gotta be careful about where and how you scream" http://www.huffingtonpost.com/2013/04/09/stress-relief-tools-old-fashioned-remedies_n_3022241.html
"They scrEAAAAAMMMMMMMM!!!" http://www.nbcnews.com/id/22219591/ns/health-behavior/t/college-students-screaming-stress-relief/#.VJ-kpV4AAA
"Library staff at the University of Wisconsin-La Crosse organized a campus-wide scream for finals week, inviting students to the center of campus Monday for a noisy form of stress relief."  http://lacrossetribune.com/news/local/uw-l-organizes-stress-relief-for-students-during-finals-week/article_d54344dc-bc3e-11e2-8f06-001a4bcf887a.html
"Georgia Tech’s students don’t just scream one night before finals start, they scream every night. "
http://college.usatoday.com/2013/12/06/fun-stress-relief-solutions-unveiled-on-campuses-as-finals-begin/
"Screaming in public can relieve stress." http://www.endowmentmed.org/content/view/632/106/