Find the root cause with an AI quality engineer
5 Why, Ishikawa (fishbone) and Red X thinking — QOS escalates each Why on your real answers, blames the system not the person, and stops at a cause you can actually verify and act on.
Built by a Production Quality Leader · IATF 16949 · VDA · EU data
We store demo questions anonymously (no identity) to improve QOS · on signup your conversation carries into your account · EU data
3 messages free · no signup · no credit card
An AI root cause analysis that doesn’t stop at the first plausible answer
One Why at a time
QOS escalates each Why only on your real answer — no jumping to a convenient cause.
System, not person
The cause is a process or control gap, never an operator’s name — that’s the only fix that sticks.
5 Why + Ishikawa + Red X
Switches method to fit the problem: 5 Why for linear chains, Ishikawa (6M) to brainstorm, Red X for hard variation-driven cases.
Stops at a verifiable cause
A root cause you can confirm with data and that, when removed, makes the problem disappear — then straight into corrective actions.
Root cause analysis is where most problem-solving quietly fails: teams stop at the first plausible cause, or blame an operator. A real root cause is a system or control gap you can verify with data, and that, when removed, makes the problem go away.
QOS drives 5 Why one step at a time on your real answers, switches to Ishikawa (6M) or Red X when the problem needs it, keeps the blame on the system, and hands the verified cause straight into corrective actions or an 8D.
Free demo — 3 messages, no signup. A full account is 30 days free with no credit card.
FAQ
- Does it do 5 Why and Ishikawa?
- Yes — 5 Why and Ishikawa (6M fishbone), plus Red X for variation-driven cases.
- Will it blame the operator?
- No — the cause is always framed as a system or control gap, because that’s the only fix that holds.
- Can it feed an 8D?
- Yes — the verified root cause goes straight into D4 of an 8D.
- Is it free?
- The chat above is free — 3 messages, no signup. A full account is 30 days free with no credit card.
Try it on a real case — free, no signup
3 messages free in the chat above. Create an account and your conversation carries into your first case. 30 days free, no credit card.