It’s common to compare the one’s portfolio with s&p to understand if you are outperforming the index or not
The problem is that to make comparison correct it’s necessary to simulate all historical transactions from the portfolio as if investments were done to the s&p index. This is something hard to do manually.
Is it possible that the app would show the “possible balance if investments were done to s&p index” information so everyone would have a proper estimation if they are outperforming the index or not