RCA Suite — Ishikawa, 5 Whys & A3 Software | F Squared: Run root cause analysis end to end: fishbone diagrams, 5 Whys, and one-page A3 reports — with AI suggestions and cloud-saved projects. Free to start; Pro at $19/mo.
Root Cause Analysis Suite. Find the root cause. Fix it for good.
RCA Suite gives you three connected tools — Ishikawa fishbone, 5 Whys, and one-page A3 — with AI that helps you dig deeper and documentation that's ready to share. Turn chaos into clarity, and plans into results.
Root cause work shouldn't live in scattered whiteboards and slide decks.
Most RCAs stall in messy diagrams, half-finished 5 Whys, and A3s rebuilt from scratch every time. RCA Suite keeps the whole investigation in one place — brainstorm causes, drill to the root, and produce a clean, shareable A3 your leadership will actually read. Less busywork, better root causes, faster corrective action.
What's inside (features)
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Ishikawa (Fishbone) — Brainstorm causes across 6M or HOP categories, cluster related ideas, and let AI surface causes you might have missed.
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5 Whys — Drill any cause to its root, linear or branching, with an AI check that flags symptoms vs. true root causes — and drafts corrective actions.
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A3 Report — Assemble a one-page PDCA story that pulls in your fishbone and 5 Whys, then print straight to a clean PDF for review.
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One connected workflow — Carry a single analysis from fishbone → 5 Whys → A3 without re-typing.
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Cloud-saved projects — Your work follows you across devices; nothing lost in a browser tab.
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AI that nudges, not replaces — Suggestions, root-cause checks, and countermeasures keep investigations moving without doing the thinking for you.
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Explore — Map potential causes on a fishbone.
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Drill — Take the likeliest cause through 5 Whys to the root.
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Document — Turn it into a one-page A3 and share or print.
Who it's for
How it works (3 steps)
EH&S professionals, Quality Engineers, Operations Leaders, Consultants, Operational Excellence teams, Industrial Engineers, and Lean practitioners — anyone who owns corrective action and continuous improvement.
Pricing
Free — $0 / forever
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All three tools (Ishikawa, 5 Whys, A3)
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Unlimited fishbones, 5 Whys & A3s
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Save / load & PDF export
Pro — $19 / month
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Everything in Free
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Cloud-saved projects, synced across devices
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Live AI — suggestions, root-cause checks, countermeasures
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The full connected Ishikawa → 5 Whys → A3 workflow
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Priority email support
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Billed monthly. Cancel anytime.
Enterprise — coming soon
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Team management, SSO, and admin controls for sites and organizations.
FAQ
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Do I need to install anything? No — RCA Suite runs in your browser. Nothing to download.
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Can I try it before paying? Yes. The Free plan includes all three tools, forever. Upgrade to Pro only when you want cloud projects and live AI.
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What's the difference between Free and Pro? Free gives you the full toolset locally. Pro adds cloud-saved projects across devices and live AI assistance.
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Is my data private? Your analyses are stored securely and never sold.
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Can I cancel anytime? Yes — Pro is month-to-month, cancel whenever.
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Do you offer team/enterprise plans? An Enterprise tier is coming. Reach out and we'll keep you posted.
Start turning chaos into clarity today.
Free to start. No install. Upgrade when it's earned its place.
