
Free
Rating summary
About
Turn a rough business idea into a decision you can defend.
Ember helps founders capture ideas, challenge assumptions, gather evidence, and decide what deserves to be built.
Spark looks for opportunity. Hammer pressure-tests weak reasoning. Together they help you:
• Explore an idea through structured AI debate
• Identify assumptions and unknowns
• Add notes, links, photos, voice recordings, and evidence
• Track confidence as evidence changes
• Create decision summaries and practical next steps
• Learn from previous validation decisions
Ember uses AI and can make mistakes. Verify important information before making decisions. Ember does not provide legal, financial, medical, or other professional advice.
Ember is free and contains no subscriptions or advertising.
Show more
What's New in Ember Workshop
1.0
September 17, 2026




