Koine koy-NAY

Find the rooms your customer is already in.

We tell you where the people you want are actually talking, what they complain about in their own words, and how to show up there without getting thrown out.

Then you post it. From your account. Under your name.

Get a free reachability verdict Free · your audience, measured · then $500 if you want the questions

koine · koy-NAY · the common tongue that ordinary people actually spoke, as distinct from the literary language of the elite. Every community has one. Learning it is the work. Faking it is what we refuse to do.


The problem, as somebody put it

Spent half a year building a product and launching it and tried to just post a white paper on HN and Reddit to get some feedback: instant ban for self promotion. From what I've seen, it is not even clear that humans are involved in this process. So how should I proceed? Start paying for ads?

Hacker News, July 2026

The replies told him to buy an aged account with karma, or to do what one of them called shadow marketing.

That is the market's default answer, and it is the reason this exists. If you don't want to buy a fake account to talk to your own customers, your remaining option is to do it properly by hand — which is slow, and which nobody has time for while also building the thing.


What you actually get

Five things, delivered by a person and not a dashboard. The first two are free, the third is the $500 plan, and all five are the two-week engagement.

  1. A ranked map of the rooms. Which platforms and which specific communities your customer is actually in — forums, Q&A sites, Discourse instances, subreddits, groups. Ranked by how alive they are, not by how big they claim to be. Most of the good ones are not the obvious ones.
  2. Each room's rules on self-promotion, extracted and read. Including the unwritten ones and the ratio each place actually tolerates, so you know your budget before you spend it rather than after you're banned.
  3. The interview plan your own evidence implies. Every claim your deck makes about your customer, turned into questions about their past — who specifically to ask, where to find them, what to listen for, and the answer that would prove the claim wrong, written down before you ask it. A question with no answer that could embarrass you isn't a test.
  4. Twenty real objections, quoted, linked and dated. What people in your market already say is wrong with things like yours — in their words, not paraphrased into marketing copy. This is the part that changes what you build, not just how you sell it.
  5. We sit with you while you post. You write it, in your voice, from your account. We tell you what will land and what will get you removed. You keep the relationship, the reputation and the account.

The Mom Test, in two halves

The rule in The Mom Test is that you must never ask people whether they like your idea, because they will lie to be kind. You ask about their life instead: what they already do, what it already costs them, what they have already paid to make it stop.

Half of that needs no interview, and that half is free. The other half is the interviews, and that is the half you are paying a person for.

Those answers already exist. Your customers wrote them down — in forums, in threads, in replies to each other — unprompted, before anyone was selling them anything. Nobody was being polite to a founder. So the first pass of that research is not an interview at all; it is a measurement over what they already said. That is the part we automate, and it is why the deliverable is quotes with dates and links rather than a summary.

What it does not replace: talking to people. So the paid half is the part that gets you into those conversations properly — which specific people are worth an hour, where to find them, and the exact questions, each with the answer that would tell you you were wrong. The measurement is what makes those questions worth asking: your phrases come back with counts beside them, and a phrase your market has never once written in public is the most useful thing on the page. And once the rooms are known they don't stop producing — the same rooms can be watched afterwards, so what your market complains about keeps arriving while you're building rather than at the next planning cycle. That part is monthly, and it is only worth buying after the verdict says these rooms exist.

What we will not do, and it's the whole point

  • No posting on your behalf. Not by a bot, not by us.
  • No aged, purchased or high-karma accounts. Competitors sell these. It works until it doesn't, and when it stops working the platform bans the account and often the website it links to.
  • No personas, no sock puppets, no generated enthusiasm. One real person — you — under one real name.
  • No pretending a model can write this for you. We tested it against real threads. The comments that earn their place are the ones carrying a specific, first-hand detail nobody could invent. You have those. Software doesn't.

What it costs

Reachability verdict — free

Upload a deck. You get the ranked map of rooms, what each one permits, and your own phrases with their real public counts beside them — which answers the question underneath everything else: is your customer reachable in public at all, and where.

Mom Test plan — $500

Two days. The interviews your evidence implies: the people to find, the questions to ask about their past, and for each one the answer that would prove your claim wrong. This is the half a machine cannot do, which is why it is the half that costs money.

Full engagement — $1,500

Two weeks. The plan plus the conversations, the twenty quoted objections, and a person sitting with you while you post. Worth buying once you know the rooms are real — a waste of money before that.

Fixed scope, fixed price. Sometimes the verdict is no — not in public, not anywhere we can read. That answer is free, you get it in writing, and it is the one this whole thing exists to hand over early rather than late.


Why the free one first

Because the answer is not always yes, and you should not have to pay to find that out.

The same tooling ran against two audiences in the same week, on the same free public sources. For a niche trade — California balcony-inspection providers — it found zero verbatim matches for the phrases that trade uses, across the whole of Hacker News, and only 2 of 12 candidate forums were even measurable. For founders with no distribution, it found those phrases thousands of times, and 10 of 16 forums ranked cleanly.

Nobody typed either result in. Same week, same method, same constraints — and the two audiences differ by four orders of magnitude. Two of the first three audiences this ran on were the first kind, which is exactly why the measurement is free now: it used to be the $500 purchase, and charging $500 to tell somebody their market is unreadable is a refund conversation, not a business. If yours turns out to be the first kind, you will know before you have paid anything — and what the $500 then buys is the set of conversations to have instead, since for an audience nobody can read in public, asking people directly is the only method left. I'll walk you through all three runs, live, on a call.


Platform-agnostic, on purpose

Platforms close. Reddit priced out its API, Facebook retired Groups access, Substack forbids crawling outright. Anything built on one platform is one policy change from being worthless.

So the first question we answer isn't how do we win Reddit. It's which rooms are worth your time at all — and that answer is usually spread across places you haven't heard of. There are more than twenty thousand independent community forums that are open, active, and unclaimed by anyone selling to the people in them.


Who this is for

A good fit

  • Pre-launch or just-launched, no audience yet
  • You know roughly who the customer is, not where they are
  • You'd rather be told your idea is wrong now than in six months
  • You will post under your own name

A bad fit

  • You want volume, automation or scale today
  • You want someone else to be the voice
  • You need attribution dashboards before you have traffic
  • You're a brand protecting share of voice — you want enterprise social listening, and it exists

Being honest about the stage

This is new. There is no customer list to show you, and inventing one would be exactly the behaviour this whole thing is against. Nobody outside my own circle has paid for this yet. You would be first, and you should price that in.

What there is: a lot of primary research into where these communities are and what gets people banned in them, and three engagements run end to end. The first was Nuvea, our own product — aimed at California balcony-inspection providers, though its homepage still says US remodeling contractors, and that gap is itself one of the findings. The second was this: the method turned on its own audience, which is how the comparison above exists. The third was somebody else's product, from their deck, and not one question in it was written by me — it came back a clear no, which is the run that changed the price.

There were two free places. Both went to products I own or a friend's, which taught me how to deliver the work and precisely nothing about what it is worth. So the free places are closed. $500 is the ask, and the reason the measurement in front of it is free is not generosity — it is that a free "yes, this looks useful" tells neither of us anything, so the free part is deliberately the part that costs me almost nothing to give and the $500 is the first thing that means something when you pay it.

Get a free reachability verdict

Tell me what you're building and who you think the customer is. You get a workspace immediately — sign in with the same address and it's there. The measurement itself costs nothing: the rooms ranked, their rules, and your own phrases with their real public counts. Then I reply with what the $500 two days would cover, and if I don't think the interviews are worth your money I'll say that instead.

If you attach a deck, that first draft is waiting in your workspace within a minute or two: the beachhead it thinks you're aiming at, the phrases it would search for, and the rooms it would check. All of it is labelled as unmeasured, because it is — a model proposing rooms is a guess until the tool has fetched them, and the ones that don't exist come back as 404s rather than as findings. You get to correct it before the tool measures anything.

Use an address you can sign in to with Google — a Workspace address or a Gmail. Your workspace is keyed to it.

Any format. PowerPoint, Keynote exported to PDF, Google Slides, a one-pager, a Word file, a screenshot of a whiteboard. It gets read on arrival and turned into a first draft of who your customer is and which rooms to check — which you'll see, and can argue with, before anyone spends two days on it. No deck is fine; the answers above are enough.

Terms, stated plainly. The reachability verdict is free and there is nothing to cancel — if it comes back saying your customer isn't reachable in public, that is the deliverable, you keep it, and you owe nothing. $500 for the two-day Mom Test plan, invoiced after we've agreed it's worth doing, not before. $1,500 for the full two weeks, only if you want it afterwards. I'll sign a mutual one-page NDA covering your product and your data. In exchange I ask to write up what happened, named or anonymised, with your approval before anything is published.

Prefer email? hello@koinespace.com