positive smile app for iPhone and iPad

There are two facial photos. One is a smiling face, and the other is an expressionless face.
If it were you, which one would you pay attention to?
According to a certain study, it seems that there are differences in the photos people focus on based on their mental state.

In this app, two types of facial photos (positive and negative) are displayed,
and by repeatedly playing a game of selecting the positive photo,
it is a game designed to cultivate the ability to focus on positive subjects.

The app also has a feature that allows you to import photos.
This means that you can play the game of selecting "positive" and "negative" objects, not just face photos.
For example, you can use it to select "positive" objects such as vegetables that are good for your health and "negative" objects such as unhealthy foods.

The results of the game are saved and displayed in a graph, so you can check your progress.