Funnel Geometry was the first time someone made me write the denominator on the same slide as the conversion rate. Our “62% onboarding” collapsed to a number I could actually defend in a board pack.
Flagship course
Product Signal Atelier
Twelve weeks, twenty-eight live studios, and a written measurement contract you can take back to a sceptical engineering lead. Informational fee: £1,240 for an Atelier Seat, as listed on the fees page. Enrolment is arranged by correspondence.
What you leave holding
- A named event catalogue with owners, purposes, and retirement rules
- A funnel model that states its denominators in plain English
- A thirty-day retention reading for your own product, not a template app
- A paywall worksheet covering trial, price, and the “belief gap”
- Notes from studio critique you can quote in a roadmap conversation
- A short ethics memo on what you will refuse to capture
Modules
- 01
Instrumentation Ethics
What a product is entitled to know about a person, and the difference between a diagnostic event and a dossier. We write refusals as carefully as we write captures.
- 02
The Event Catalogue
Durable nouns, boring verbs, versioning without “_v3”, and a retirement ceremony for names that were only ever UI gossip.
- 03
Funnel Geometry
Steps that are actually sequential, steps that only look sequential, and the drop that is a product opinion rather than a tracking gap.
- 04
Retention Curves in the First Thirty Days
Install is not a relationship. We read return by first-session quality, notification honesty, and the job the app claimed it would do.
- 05
Paywall Arithmetic
Trial length as a cost, price as a sentence, and the gap between starting a trial and deciding the product is real.
- 06
Studio Critique
You bring a live chart from your team. The circle is allowed to be unkind to the chart and kind to the person who has to defend it on Monday.
Instructor
Helena Voss
Helena has spent a decade inside London product teams measuring consumer apps, then moved the teaching practice to East Looe so the work could be slower. She still sits with two private-grid teams a year. She does not consult on advertising auctions and will say so if you ask.
Notes from people who sat the circle
The Event Catalogue week assumed more comfort with SQL than the public syllabus admitted. I caught up, but the first assignment was bruising, and I would tell a colleague to block two extra evenings before week two.
★★★★☆
Studio Critique is uneven depending on who is in the room. The week our circle included two marketplace apps, the notes were sharper than the week it was all subscription media.
Questions we are asked before people write
Do I need a particular analytics vendor?
No. The atelier is vendor-agnostic on purpose. You will work in whatever warehouse or product-analytics tool your team already trusts, provided you can export a honest sample.
Is this suitable if I only work on web?
Only in part. This atelier does not cover web analytics stacks such as GA4 in any depth; it is built around mobile product telemetry, store install reality, and the identifiers that come with an app. Web specialists are welcome if they accept that limit, but they should not expect a dual curriculum.
What is the real weekly load?
Two live sessions and a written brief. Most people spend about six and a half hours. Week two (the catalogue) runs longer if your current naming is a mess, which it usually is.
Can my whole team sit in?
The Atelier Seat is priced per person. For a team working on one product, look at Private Grid on the fees page — it is a different shape of teaching, not a bulk discount on the circle.
Ask about the next circle
Tell us the product and the question the dashboard will not answer. We reply within two working days.