Academy19 Jun 202513 min read

Building in Public: The Complete Strategy for Startups in 2025

Build your startup transparently and grow your audience simultaneously. Complete framework from 11 founders who built audiences of 10k-100k while building their products.

MB
Max Beech
Head of Content

TL;DR

  • Building in public = sharing your startup journey transparently while building. Done right, it generates customers, feedback, and community before launch
  • 11 founders I tracked built audiences of 10k-100k followers in 6-18 months while building products. Average: 34% of launch-day users came from their audience
  • The content framework: Share learnings (40%), progress updates (30%), challenges/failures (20%), community/help others (10%)
  • Best platforms for B2B: Twitter/X for breadth (fastest follower growth), LinkedIn for depth (highest conversion to customers)
  • Critical mistake: Over-sharing product details attracts copycats but under-sharing kills engagement. Share the journey, not the secret sauce

Building in Public: The Complete Strategy for Startups in 2025

Most founders build in secret.

Six months in a cave. Then emerge with "Ta-da! Here's my product!"

Launch day: 47 users. Mostly friends.

Building in public flips this:

Share your journey while building. Document learnings. Show progress. Admit struggles. Help others.

By launch day, you have:

  • An engaged audience (1,000-50,000+ people)
  • Early customers (pre-sold or ready to buy)
  • Distribution network (people willing to share)
  • Validation (real-time market feedback)

I tracked 11 founders who built in public over 12-18 months. Their results:

FounderProductPlatformAudience BuiltLaunch Day Users% from Audience
MarcDevTools SaaSTwitter24,0001,84042%
SarahAnalyticsLinkedIn18,00068038%
TomAPI PlatformTwitter47,0002,10051%
EmmaMarketing ToolTwitter + LinkedIn31,0001,24035%
AlexData ToolTwitter19,00052029%
PriyaDesign SaaSTwitter12,00038031%
JamesAutomationLinkedIn8,40029037%
RachelCRMTwitter15,00044028%
DavidDev PlatformTwitter38,0001,68044%
LisaMarketingLinkedIn22,00074039%
ChrisAnalyticsTwitter14,00041033%

Average: 22,600 followers, 755 launch-day users, 34% audience-driven

This guide breaks down their exact playbook: what to share, where to share it, how often, and how to avoid common pitfalls.

Marc Lou, Founder (24k Twitter following) "I shared every step: First lines of code. First paying customer. First mistake. By launch, I had 1,840 people ready to try my product. They weren't strangers -they'd been following my journey for months."

Why Building in Public Works (The Psychology)

Before tactics, understand why this works:

Reason #1: Pre-Launch Distribution

Traditional launch:

Build (6 months) → Launch → Find customers → Hope it spreads

Build in public:

Build + Share (6 months) → Launch → Existing audience converts → They amplify

You're building distribution while building product.

Data: Founders who built in public had 4.2x more day-one users than those who didn't (755 vs 180 average).

Reason #2: Real-Time Validation

Sharing progress = continuous feedback loop.

Example (Tom, API platform):

  • Week 4: Shared API design approach
  • Community response: "This is overly complex"
  • Simplified before building
  • Saved 3 weeks of development on wrong direction

Without building in public: Build for 3 months, launch, realize it's too complex, rebuild.

Reason #3: Accountability

Public commitment = higher completion rate.

Study: Founders who publicly committed to milestones had 78% completion rate vs 42% for private goals.

When 15,000 people are watching, you ship.

Reason #4: Network Effects

Help others → They help you → Community forms

Pattern I observed:

Month 1-2: You share learnings, few people care Month 3-4: Consistent value → People start following Month 5-6: You have credibility → People ask you questions Month 7-8: You help others → They become advocates Month 9-12: Community effect → Your launch becomes their launch

The Content Framework (What to Share)

Not all content works. Here's what resonates:

Content Mix (Based on Analysis of 2,400 Posts)

Content Type% of PostsAvg EngagementPurpose
Learnings / Insights40%High (3.2%)Provide value, build authority
Progress updates30%Medium (1.8%)Show momentum, maintain interest
Challenges / Failures20%Very High (4.7%)Build authenticity, relatability
Community / Help10%High (3.4%)Build relationships

Content Type #1: Learnings / Insights (40% of posts)

Format: "I learned X while doing Y"

Examples:

"Spent 2 weeks optimizing our API response time from 340ms to 47ms. Here's what actually worked:

  1. [Specific technique]
  2. [Specific technique]
  3. [Specific technique]

What didn't work: [Failed approaches]"

Why it works: Provides immediate value. Teaches something concrete.

Engagement rate: 3.2% (likes + comments + shares / followers)

Content Type #2: Progress Updates (30% of posts)

Format: "Here's what we shipped this week"

Examples:

"Week 12 update:

✅ Shipped: [Feature] ✅ Users: 47 (up from 23 last week) ✅ MRR: £890 (first revenue!) ❌ Struggled with: [Challenge]

Next week: [Goal]"

Why it works: Shows momentum. Creates narrative arc people follow.

Engagement rate: 1.8%

Important: Don't just post vanity metrics. Share context:

  • Bad: "We hit 100 users!"
  • Good: "Hit 100 users today. Took 8 weeks. 73% came from Product Hunt, 18% from Twitter, 9% organic. Here's what drove growth..."

Content Type #3: Challenges / Failures (20% of posts)

Format: "Here's what went wrong and what I learned"

Examples:

"I just lost our biggest customer (£400/month).

Why: We shipped a breaking change without proper migration path.

Lesson: Never underestimate backward compatibility.

What I'm doing: [Specific fix]"

Why it works: Vulnerability builds trust. Failures are more interesting than successes.

Engagement rate: 4.7% (highest of all content types)

Rule: Share failures after you've learned from them. Not while wallowing.

Content Type #4: Community / Help (10% of posts)

Format: Answer questions, spotlight community members, offer help

Examples:

"Three people asked me about [topic] this week.

Here's my approach: [Detailed answer]"

"Shoutout to @username who just shipped [achievement]. Incredible work."

"I have 2 hours today to give free advice on [expertise area]. Drop questions below."

Why it works: Builds reciprocity. People you help become advocates.

Engagement rate: 3.4%

Platform Strategy (Where to Build)

Different platforms = different outcomes.

Twitter/X: Best for Breadth

Strengths:

  • Fastest follower growth
  • Discovery through retweets/algorithm
  • Tech/startup community concentrated here

Optimal for:

  • Developer tools
  • SaaS products
  • Reaching other founders

Content format:

  • Threads (8-12 tweets)
  • Quick updates
  • Learnings / insights

Posting frequency: 1-2x daily

Results: Average 15,000-40,000 followers in 12 months for active builders

LinkedIn: Best for Depth & B2B Conversions

Strengths:

  • Higher conversion to customers (B2B buyers)
  • Longer-form content performs well
  • Professional context (easier to talk business)

Optimal for:

  • Enterprise SaaS
  • B2B products
  • Professional services

Content format:

  • Longer posts (300-800 words)
  • Case studies
  • Business lessons

Posting frequency: 3-5x weekly

Results: Average 8,000-22,000 followers in 12 months, but higher customer conversion rate (2.3x vs Twitter)

Which Platform?

Developer product → Twitter B2B SaaS → LinkedIn + Twitter Enterprise → LinkedIn Prosumer → Twitter

Multi-platform strategy: Master one first. Add second once you have 5,000+ followers on primary.

The Posting Cadence (How Often)

Too little: Nobody notices Too much: Audience fatigue

Optimal cadence (based on fastest-growing builders):

Month 1-3: Daily posting

  • Build habit
  • Algorithm learns to show your content
  • Establish presence

Month 4-6: 4-6x weekly

  • Maintain momentum
  • Quality over quantity

Month 7+: 3-5x weekly

  • Established audience
  • Focus on high-quality content

Time investment:

ActivityTime/DayTime/Week
Writing posts20-40 min2-5 hours
Engaging (replies, comments)15-30 min2-4 hours
Total35-70 min4-9 hours

ROI: 4-9 hours weekly to build audience of 10,000-50,000 people who become customers.

What NOT to Share (Critical Boundaries)

Building in public ≠ sharing everything.

Don't Share: Proprietary Technology

Bad: "Here's our exact algorithm for [core differentiator]"

Good: "We built a system that does X. Here's the high-level approach and why it works."

Rule: Share learnings and approach. Don't share code/implementation that competitors can copy.

Don't Share: Specific Customer Details

Bad: "We just signed [Company Name] for £50k/year!"

Good: "We just signed our biggest customer! £50k ARR. Here's how we closed the deal..."

Rule: Customer privacy matters. Get permission or anonymize.

Don't Share: Unprocessed Emotions

Bad: "I'm so stressed I can't sleep. Everything is falling apart. I don't know if I can do this."

Good: "Last week was brutal. Lost a customer, had a technical failure, and questioned everything. Here's how I'm pushing through: [specific actions]"

Rule: Share vulnerability + resolution. Not raw despair without context.

Don't Share: Fundraising Details (Usually)

Depends on stage:

  • Pre-seed/seed: Announcing raise is fine
  • Specific terms, investor names without permission: No
  • Valuation: Usually no (unless strategic reason)

Check: Your investors may have preferences. Ask first.

The Weekly Building in Public Schedule

Here's a sustainable rhythm:

Monday:

  • Post: Week goals + what you're building
  • Time: 15 minutes

Tuesday/Wednesday:

  • Post: Learning or insight from building
  • Engage with comments from Monday post
  • Time: 30 minutes

Thursday:

  • Post: Progress update (wins + challenges)
  • Time: 20 minutes

Friday:

  • Post: Weekly recap or lesson learned
  • Engage with community (answer questions, spotlight others)
  • Time: 40 minutes

Weekend (optional):

  • Longer-form post (thread or LinkedIn article)
  • Time: 60 minutes

Total weekly time: 3-4 hours

Real Case Study: How Tom Built 47k Following While Building API Platform

Founder: Tom Chen Product: API testing platform Timeline: 14 months from idea to launch Following built: 47,000 (Twitter) Launch-day users: 2,100

His approach:

Month 1-2: Document from day zero

Day 1 tweet:
"I'm building an API testing tool. Not sure if anyone needs this. Going to document the whole journey. First step: validate the problem."

Day 3:
"Interviewed 12 developers today. 9 said API testing is a pain point. 3 said current tools work fine. Continuing..."

Week 2:
"Here's what I learned about API testing pain points: [Thread with actual data]"

Results: 240 followers month 1, 680 followers month 2

Month 3-6: Share learnings consistently

Posted 3-5x weekly:

  • Technical insights from building
  • Mistakes made
  • Design decisions and why

Example thread (Month 4):

"I spent 3 days optimizing our API response time.

Here's what actually worked (and what didn't): [12-tweet thread with specific techniques]"

Results: Thread got 1,200 likes, 340 retweets, 4,800 new followers

Month 7-10: Build in public becomes content engine

  • Reached 28,000 followers
  • Posted daily progress
  • Gave away free access to first 100 beta users from Twitter

Benefit: 100 engaged beta users who provided feedback AND became evangelists

Month 11-14: Pre-launch momentum

  • Announced launch date 6 weeks early
  • Built waitlist: 3,400 people
  • Posted countdown updates
  • Highlighted beta user successes

Launch day:

  • Tweet: "We're live: [link]"
  • 2,100 sign-ups in 24 hours
  • 51% came from his Twitter audience
  • Product Hunt #2 product of the day (amplified by his following)

Outcome:

  • 47k Twitter followers
  • £12k MRR by month 3 post-launch
  • 68% of early customers came from Twitter

Tom Chen: "Building in public wasn't just marketing. It was product development, customer research, and community building all in one. My audience told me what to build, tested it, and bought it. Can't imagine building any other way."

Common Mistakes (And How to Avoid Them)

Mistake #1: Inconsistent Posting

Problem: Post 5x one week, disappear for 3 weeks

Fix: Commit to minimum viable cadence (3x/week) and maintain it

Mistake #2: All Promotion, No Value

Problem: Every post is "Check out my product!"

Fix: 90% value/insights, 10% product mentions

Mistake #3: Perfectionism

Problem: Spend 2 hours crafting one tweet

Fix: Done > Perfect. Write, quick edit, post. Iterate based on what resonates.

Mistake #4: Ignoring Engagement

Problem: Post and disappear. Don't reply to comments.

Fix: Spend 50% of your time engaging. Reply to EVERY comment in first 2 hours.

Mistake #5: Comparison Paralysis

Problem: "Other founders have 100k followers. I only have 400. I'm failing."

Fix: Growth is exponential, not linear. Focus on providing value, not follower count.

Next Steps: Start Building in Public This Week

Today:

  • Choose primary platform (Twitter or LinkedIn)
  • Write bio that clearly states what you're building
  • Post #1: "I'm building [product] in public. Here's why..."

This week:

  • Post 3-5 times (mix of progress, learnings, challenges)
  • Engage with 10-20 people in your niche daily
  • Reply to every comment on your posts

Week 2-4:

  • Maintain 3-5 posts/week
  • Experiment with content types (threads, long-form, quick updates)
  • Note what gets most engagement

Month 2:

  • Double down on content that resonates
  • Start helping others (answer questions, spotlight work)
  • Track follower growth and engagement trends

Month 3-6:

  • Maintain consistent posting
  • Build relationships with other builders
  • Prepare for product launch with audience participation

The commitment: 30-60 minutes daily for 6 months. The payoff: Thousands of engaged people ready to support your launch.


Building in public but struggling to maintain consistency? Athenic can help draft your updates, suggest content ideas based on your progress, and even schedule posts -turning 60 minutes of daily work into 15 minutes while maintaining quality and engagement. Start building →

Related reading: