KeepRule helps investors stop trading on emotion and start trading on principle. 90% of traders lose money — not because they can't analyze stocks, but because they can't follow their own rules. KeepRule fixes this with a simple 3-step system: 1. CAPTURE — Document your investment principles in a permanent, searchable system. Build your own rules or learn from 26 legendary investors including Buffett, Munger, and Graham.