If you suffer from a mental illness like depression or anxiety, know that you're not alone: In a given year, about one in five US adults — or 43.8 million — experiences mental illness, according to the National Alliance on Mental Illness. But there is hope — and help.

Even though some experts believe that our increasing reliance on technology can breed more chances for mental illness to develop, there are ways that technology can help those with mental illness deal with their symptoms, such as mental health apps. Although they aren't a substitute for actual healthcare, the following apps are helping many users cope with their illnesses and get back to the business of living — for free.