Yes, there are quite a few startups whose product is focused on mental health. Here are a few examples:
Headspace is a mindfulness and meditation app that offers personalized guidance and exercises to help people reduce stress, improve sleep, and boost their overall wellbeing.
Calm.com is a website and iOS app that helps people relax and focus through a variety of relaxation techniques, including guided meditation, breathing exercises, and sleep stories.
Happify is an app that uses positive psychology techniques to help people build resilience, overcome negative thinking, and boost their overall happiness.
unmind is a workplace mental health app that offers a variety of tools and resources to help employees boost their mental wellbeing.
If you're interested in exploring more startups in this space, I would recommend checking out this list of 50 mental health startups to watch in 2020:https://www.huffingtonpost.com/entry/50-mental-health-startups-to-watch-in-2020_us_5e0e1f90c5b6c8149f09d1fa