Not gonna say its name since I don't want to adverise, just share the story. If you are interested search related keywords on iOS app store.
Sooo... I have had this problem, recently moved back after unsucessfull move out to Costa Rica returned back to Poland and after one month got fired... so I was devastated, deeply in depresion and smiling was imposible for me...
So I had this genious idea...
...since I doomscroll every day, what if I made myself smile every time I enter a social app? Is it possible to block and unlock the apps with a smile?
...made some research and yeah possible, not easy, but possible XD
Wasn't sure if its gonna work, but I had to try - I just really was in a bad place at that time and this gave me some hope.
After building it and using it for one week, my partner said "what a nice wrinkles next to eyes you have, never saw them" + I have to say my mood jumped up a lot.
Curious about opinoons of others, how much does smile have in common with your mood? Does forcing it at the beginning help?