A3 Coach: Problem Solving
Think on one page
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Free
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About
The A3 is the most copied and least understood tool in lean: one page that carries a whole way of thinking. A3 Coach walks you through it the way a good mentor would — one question at a time.
Background. Current condition. Goal. Root-cause analysis. Countermeasures. Plan. Follow-up. At every step the app asks the coaching questions that keep you honest.
— Guided wizard through the full A3 storyline
— Coaching prompts at every section
— Export as a clean, printable one-page PDF
— Offline, no account, no tracking
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What's New in A3 Coach
1.0
August 7, 2026
