Mobile app that helps alleviate sadness and depression

I woke up today feeling really sad and Not really sure of what this really means. I looked at my phone and I saw a feature of the Google assistant that says "I'm feeling sad" and it gives a list of options of things I can do to alleviate my sadness;<br><br>1). I saw a feature of music recommended to me that it says would help me feel better, I'm not sure how Google determines if really me if the music they are recommending is what I would really want but it's a great feature.<br><br>2). I also went to the Spotify app and I saw an option that says "I'm feeling sad" and it presents songs it thinks would help me feel better, It also has a feature for if I'm feeling very sad to call someone. I think this is a great feature that can help someone who is feeling like they can't carry on anymore.<br><br>3). I even found a feature on what's app that says "I'm feeling sad" and it recommends songs to listen to.<br><br>The reason I'm posting this idea is because a friend of mine was really down the other day and he said if he had a friend he would probably call them to talk. I think an app that can compensate and alleviate sadness if you have no one else to talk to would be a really great idea.