I create a free mobile-first tool to help you close better deals; Zopamind.com . It can be used both to help you understand your boundaries (ZOPA, BATNA) and as a tool during negotiations (Monte Carlo Decision Tree).

More details: It uses 200+ signals to calculate your actual odds of winning a deal, helping you spot risks before you walk into the room.

Why use it? Data-Driven: Analyzes your deal across 10 dimensions. 100% Private: Data lives in your browser, not my servers. 100% Free: No paywall.

Perfect for prep, in-session management, and debriefing.

Try it here: https://zopamind.com