Acquisition SaaS
Growth

Build in public: launch your SaaS out in the open

7 min read

Building in public turns the work of building your SaaS into an acquisition channel. What to share, on which networks, and how it brings your first customers.

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Key takeaways

  • Building in public turns your work into content, and your content into first customers.
  • You don't need an audience to start, you build one by sharing.
  • Share the journey (numbers, decisions, misses), not just finished features.

You're building your SaaS heads-down in your corner, telling yourself you'll start talking about it "when it's ready." The problem is that on launch day, nobody is waiting for you. You hit publish, and it's silence.

Building in public flips that logic. Instead of keeping the secret until release, you build out in the open: you share your progress, your numbers, your decisions and your mistakes as they happen. The result is that you don't launch to an empty room, you launch to people who have been following your story for weeks. And some of them become your first users.

Founder working on a laptop in a bright workspace
Building in public means documenting the road, not just showing the destination.

What building in public actually means

Building in public isn't "posting once in a while." It's a stance: making the process of creating your product visible, continuously. A design you can't decide on, a bug that cost you two days, your first sale, your first refund. Everything that usually stays hidden behind the polished landing page.

The idea isn't new, but one founder made it famous. Pieter Levels spent about a decade building an audience of several hundred thousand followers by launching product after product out in the open, numbers included. When he shipped Photo AI, that stockpile of attention made all the difference: the product went from 0 to 132,000 dollars in monthly recurring revenue in eighteen months, solo, documented publicly step by step (Indie Hackers case study).

Note the mechanism carefully: it isn't transparency itself that sells. It's that by sharing, you build an audience of people who trust you before they ever reach for their card. You replace the ad budget with earned attention.

Nobody is waiting for you on launch day. Unless you told the story before.

Why it works when you're starting from zero

Building in public is one of the rare acquisition strategies that requires neither budget nor a starting audience. It requires consistency and a bit of nerve. Here's why it fits a founder looking for their first users so well.

$132K

Photo AI MRR in 18 months, solo and in public

~10 years

Spent building an audience before the big hit

$1M ARR

Reached in 17 days thanks to the audience already there

These figures come from the same founder, and that's exactly the point: they show that the explosive launch (a product that hit one million dollars in annualized revenue in seventeen days) isn't luck. It rests on years of accumulated attention from building out in the open. You don't start from zero on the big day, you start from the capital you built before.

Three concrete reasons it works for you, now:

  • You build your audience and your product at the same time. Every post is also a temperature check. Reactions tell you which feature actually interests people, before you code it.
  • Transparency attracts. On indie maker platforms, posts that show real revenue numbers generate far more engagement than vague "making progress" updates (Indie Hackers analysis). Specifics stop the scroll.
  • You document your credibility. When a prospect hesitates, your public track record of progress is worth a thousand sales arguments.

What to share (and what to keep to yourself)

The beginner's mistake is to share only the pretty feature announcements. But what creates the bond is the road: the doubts, the numbers, the decisions. Here's how to sort it out.

What you shareWhat it triggers
Your real numbers (sign-ups, MRR, reply rate)Credibility and engagement, it's the most-read content
A product decision you're unsure aboutUseful feedback before you've even coded
An honest miss (a bug, a flat launch)Attachment, people follow humans, not logos
The behind-the-scenes of a feature in progressAnticipation for the day it ships
A lesson learned this weekSharing and new subscribers

What you can keep to yourself: sensitive code, your users' data, and any number you couldn't stand behind publicly. Building in public doesn't force you to spill everything, it forces you to be truthful about what you show.

The 'show, don't tell' rule

A screenshot of your dashboard is worth ten sentences. A precise number ("47 sign-ups this week") beats a round number ("around fifty"). Specifics and accuracy are what make a post credible and shareable.

Which channels to build in public on

You don't need to be everywhere. You need one main channel where your audience already hangs out, and to be consistent there. Here's how to read the big three.

X / Twitter

The historical cradle of building in public. Short format, a culture of numbers and screenshots, a very active indie maker community. Ideal if your audience is technical or founders.

LinkedIn

Slower but more qualified for a B2B SaaS. You reach decision-makers, your posts live longer. Perfect if you sell to companies.

Niche communities

Indie Hackers, Reddit, specialized Discords. You borrow an audience already gathered around a topic. Less raw reach, but ultra-relevant feedback.

The right instinct isn't to pick "the" perfect channel, but the first one, the one that fits your audience. You go all in on it for a month, you measure, and you adjust. One channel taken seriously beats three lukewarm ones.

Person writing a message on a smartphone
One main channel, held with consistency, beats five abandoned accounts.

Your build-in-public routine, week by week

Building in public almost always fails for one reason: irregularity. Three enthusiastic posts, then nothing for a month. Here's a sustainable routine, even while building your product on the side.

1

Pick a channel and a rhythm

One channel, two to three posts a week. Better a modest pace you keep than a marathon you drop after ten days.
2

Document as you go

Jot your progress in a file throughout the week: the bug fixed, the number of the day, the decision made. You never start from a blank page when it's time to post.
3

Share a number every week

Sign-ups, visitors, reply rate, MRR when it arrives. The recurring number creates an appointment: people come back to watch the curve climb.
4

Reply to every comment

Building in public is a conversation, not a broadcast. Every reply strengthens the bond and brings you free product feedback.
5

Turn the curious into early users

When someone shows interest, offer them a try. Your public audience is a direct pool of first testers and first customers.

The traps that make building in public useless

Plenty of founders build in public without ever landing a single customer. Almost always because of one of these three traps.

Sharing without ever making an offer

Documenting is good. But if you never offer your product, you build an audience of spectators, not customers. Dare the transition: "here's what I'm building, want to try it?". Building in public has to loop back into a conversion.

The second trap is number narcissism: sharing vanity metrics (likes, views) instead of what matters to your business. Your audience doesn't care about your impressions, it wants to see a product that solves a real problem move forward.

The third is believing that building in public replaces a strategy. It feeds your acquisition, it doesn't define it. You still need to know which channel to scale and exactly who you're talking to. Building in public without direction is regular noise, not growth.

Where to start this week

Building in public isn't a separate project, it's a habit to graft onto what you're already building. Pick a channel, open a notes file, and post your first number this week, even a small one. The first post is always the hardest, then it rolls.

To turn that audience into first users, combine it with the right levers: a waitlist to capture the people following you, the method to find your first 10 customers one conversation at a time, and a real content strategy so your building in public doesn't fizzle out. It's also the best way to spot your early adopters, the ones who buy before the product is perfect.

Build in public, sure. But on which channel?

Answer two questions and get the acquisition channel to focus on first for your SaaS, with your plan for the next 60 days.

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