istfin is financial analysis software for monitoring and analyzing Istanbul Stock Exchange data. The platform transforms complex market information into decision-focused formats through real-time tracking of stocks, sectors, and indices. Interactive data visualization tools display market movements, while advanced charting and customizable metrics support technical and fundamental analysis. The strategy creation feature enables the definition of trading rules, testing against historical data, and parameter optimization. Stock filtering and comparison tools evaluate securities using various criteria, and an AI assistant supports company research, ratio analysis, and trend tracking. News integration displays market updates and their impact on prices. istfin operates on a tiered model, from a free tier with delayed data to paid tiers offering real-time data, advanced tools, and API access.