90% of traders lose money — not because they can't read charts, but because they can't follow their own rules
KeepRule helps you build, follow, and refine your personal investment rules — so every trade has a reason, and every loss has a lesson
Your best trading insights are scattered across notes, screenshots, and memory. KeepRule gives them a permanent, searchable home
See your trade history alongside the rules you followed — or broke. Patterns you never noticed become obvious
AI reads all your rules and scores your discipline — not your P&L. It tells you which rule you broke and why it matters
Buffett, Munger, Dalio, Graham — every legendary investor operates on a personal rule set. They don't predict the market. They prepare for it. KeepRule gives you the same framework
"Rule No. 1: Never lose money. Rule No. 2: Never forget Rule No. 1."Warren Buffett
Not a platitude — it's a complete stop-loss discipline. The difference is whether you have it written down and follow it every single time
"An investment operation is one which, upon thorough analysis, promises safety of principal and an adequate return."Benjamin Graham
"Thorough analysis" means having criteria before you enter — not rationalizing after you've already bought. That's what a rule system does
"He who knows when he can fight and when he cannot will be victorious."Sun Tzu
Knowing when NOT to trade is a rule. The best investors spend most of their time waiting — but only a system gives you the patience to do it
What's your thesis? Where's the stop-loss? KeepRule's structured forms turn gut feelings into documented reasoning — before you click buy
Most traders repeat mistakes because lessons stay in their heads. KeepRule helps you extract principles from every win and loss — and puts them where you'll see them before your next trade
Not a generic trading bot — a private referee who has read every one of your rules. After each trade, it tells you exactly where you stayed disciplined and where you didn't
Discover curated knowledge from the greatest investors of all time
Time-tested principles from 26 legendary investors
Learn from Buffett, Munger, Graham, Lynch and more
What would the masters do in your situation?
Iconic quotes that shaped investment thinking
Analyze investments through the lens of each master
Discover your investor personality type in 10 questions
Join thousands of investors who trade with rules, not feelings. Free to start. No credit card required