I’m a developer, and I’d like to build a tool around a specific problem people here actually have. If you currently pay a monthly subscription for a trading tool, which feature do you actually use—and what would you want a free, open-source alternative to do? It could be a chart indicator, position-sizing tool, options payoff calculator, trade journal, or a way to test clearly defined trading rules. Describe: 1. What you’re trying to do. 2. The inputs and rules the tool would need. 3. What a use
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