Matrices.app is an AI spreadsheet that claims to "fill itself." Here's a breakdown of what the website suggests about its functionalities: AI-powered data entry: Matrices.app seems to automate data entry tasks through AI. This could involve functions like generating formulas, completing data patterns, or suggesting data based on previous entries. Spreadsheet for AI tasks: The website suggests it caters to data manipulation and analysis commonly performed in AI workflows. This might include data cleaning, transformation, and visualization tools integrated within the spreadsheet environment.