The US Department of Veterans Affairs has a mobile app to help those suffering from PTSD. 

The PTSD Coach app can help you learn about and manage symptoms that often occur after trauma. Features include:

Reliable information on PTSD and treatments that work

Tools for screening and tracking your symptoms

Convenient, easy-to-use tools to help you handle stress symptoms

Direct links to support and help

Always with you when you need it

Together with professional medical treatment, PTSD Coach provides you with resources you can trust. If you have, or think you might have PTSD, this app is for you. Family and friends can also learn about PTSD and coping from this app.

Click here for more information.