The Friday re-listener
You’ve re-listened to the same interview twice this week.
The map exists before the call ends.
For product teams · no bot in the customer call
See their process while they describe it.
Mumble listens to your Zoom or Meet call and draws the customer’s workflow as you talk. Click any box to see their exact words.
macOS 13 or later · works with your Claude Code or Codex account
REC
Finance ops manager
Invoice arrives in shared inbox
Ops checks PO match
Sent to approverBlocked
From the transcript · 04:12“it can sit there three days if he’s travelling”
Escalate to CFO (sometimes)
Sound familiar?
The “where’s the quote?” researcher
Someone asked “says who?” and you didn’t have the quote.
Every box opens the customer’s own words.
The workshop scribe
You ran the workshop and don’t remember what anyone said.
Post-its land and group themselves while you facilitate.
One tool for the three conversations you run most.
Each step as the customer describes it, the branch nobody documented, and the bottleneck in their own words.
See the process shape →Invoice arrives in shared inbox
Ops checks PO match
Sent to approverBlocked
Paid in the Friday run
Escalate to CFO (sometimes)
From the transcript · 04:12“it can sit there three days if he’s travelling”
Questions at the top, findings underneath, evidence under each. Hypotheses stay separate.
See the research shape →QuestionWhy do people abandon booking?
FindingFee shown too late
Evidence“I got to the last step and the fee appeared.”
FindingMobile date picker fails
Evidence“I kept tapping the wrong day on my phone.”
Kept separate
HypothesisMaybe people compare us on total price
What worked, what didn’t, and only the follow-ups people agreed.
See the retro shape →
What worked
Demo first, slides after
Customer joined live
Timebox held
What didn’t
Too many people in the room
Notes lost after day two
Follow-ups agreed
Rewrite the fee step copy
Book 3 mobile sessions
Proof, not opinion
Every insight has a receipt.
TranscriptParticipant 3 · 41:06
Participant 3 · 41:06So what made you stop booking?
I had the dates picked and everything.
the fee only showed up at the very end
so I went back to check the other site.
I do most of this on my phone, at night.
I kept tapping the wrong day on my phone.
Anything Mumble infers is marked. Everything else links to what was said.
Mumble records your Mac’s audio, so nothing joins the customer’s call and the room stays the same. Tell them you’re recording, as with any recorder.
Whisper transcribes on your Mac. The customer’s audio is never uploaded.
Export the map as PNG or PDF, and the summary and transcript as Markdown, ready to drop into the PRD.
Every call is a folder of readable files in ~/Mumble, so the research can live next to the spec.
FAQ
Questions product teams ask.
Is this another AI note-taker?
No. Note-takers give you a transcript and a summary. Mumble gives you the structure, drawn while you talk, with every box linked to the transcript.
Does a bot join the customer call?
No. Mumble records your Mac’s audio, so nothing joins the call and the room stays the same. It works with Zoom, Teams, Meet or any browser call.
Do I need to tell my customer?
Yes. Nothing joins the call, but you are recording it, so tell people, the same as with any recorder, and check the recording rules where you and they are.
Does the customer’s audio leave my Mac?
No. Transcription runs on your Mac and the audio is never uploaded. To build the map, the transcript goes through your own Claude Code or Codex account.
Does it work for in-person interviews and workshops?
Yes. Mumble listens through your Mac’s microphone, so a workshop or an in-person interview gets mapped the same way as a call.
Can it turn interviews into an affinity map?
Yes. The Research shape puts questions, findings and evidence in their places, and the Brainstorm shape clusters what people say into themes as they say it.
How do I know a finding is real?
Every box links to the customer’s exact words, with a timestamp. Anything Mumble infers is marked as a suggestion, so you can remove it or keep it knowingly.
Can it tell who said what?
Not yet. Mumble captures the whole conversation in order but doesn’t label speakers. On calls, headphones give the cleanest audio.
Does it know our product names and jargon?
Add them to a vocabulary list and transcription gets them right, for one workspace or for one call.
How do I get it into Notion or FigJam?
Export the map as PNG or PDF, or copy it to the clipboard and paste it in. The summary and transcript export as Markdown, which pastes straight into Notion.
Can my team see the board?
Share an export for now. Canvases are local files on your Mac. Team mode, coming soon, adds sharing, publishing and team collaboration.
What does it cost?
Nothing while Mumble is in beta, and local use on your Mac stays free after it. Team mode, a monthly plan for sharing and collaborating on boards, is coming soon.