CryFace may just be the most bipolar app that has surfaced yet. It lets you turn smiles into instant frowns. It is definitely an optimal tool for people who cannot stand some people smile, as well as those who want to make crying people smile.
The uses of the app can go both ways. It may used as a humorous tool to turn real frowns upside down. It may also very well be used to aid the intentions of pure evil. There are certainly people out there that smile through struggles in life that infuriate some others. If you are one of those people who just want to see these people cry, this is your chance.
Cry them up all you want, then perhaps take a chill pill afterwards.