I miss the filter option in the vocab mountain of the website in the Gregmat+ app. It would be of great help if this filter words according to color could be incorporated inside the app.
The reason is that when I go through the vocab mountain, there are some words that I usually forget or make mistake. But when I study those mistaken words only in separation, I find it easier to remember them later.
The website provides this feature, but the app does not. I think it would help many students if this feature was also available in the app.