Building in Public: A Guide for Developers (2026)

Building in public means sharing your product development journey publicly — the wins, failures, metrics, and learnings. It's become the default marketing strategy for indie developers and small startups. Here's how to do it effectively.

Why Build in Public?

1. Free Marketing

Every update is content. Share your progress on Twitter/X, and you're marketing without feeling salesy.

2. Built-In Audience

By the time you launch, you have an audience waiting. No cold launch to crickets.

3. Accountability

Public commitments keep you shipping. It's harder to quit when people are watching.

4. Feedback Loop

Get product feedback before launch. Build what people actually want.

5. Network Effects

Other builders find you. Collaborations, advice, and opportunities emerge.

What to Share

Weekly Progress Updates

Every week, share:

What you built
Challenges you faced
Metrics (users, revenue, traffic)
What's next

Example tweet:

Week 12 building [Product]:

Launched waitlist page

47 signups in 3 days

Built payment integration (Stripe)

Next: onboarding flow

MRR: $0 (pre-launch) Followers: 312 (+28)

Monthly Revenue Reports

Share MRR publicly. The transparency builds trust:

March revenue report:

MRR: $2,847 (+$612)

Customers: 23 (+5)

Churn: 1 customer

Lessons: pricing page redesign increased conversions 40%

Technical Decisions

Share architectural choices and learnings:

Switched from REST to tRPC today.

Before: type mismatches, manual API docs, slow iteration After: end-to-end type safety, no docs needed, 2x faster

Should have done this months ago. Here's how I migrated...

Failures and Learnings

Failures get more engagement than wins:

Spent 2 weeks building a feature no one uses.

The mistake: didn't validate demand first. The fix: now I ask 10 potential users before building anything.

Lesson learned (the hard way).

Behind-the-Scenes

Show your process:

Screenshot of messy Figma file
Code snippet you're proud of
Database schema design reasoning
Your workspace/setup

People love seeing the unpolished reality.

Where to Build in Public

Twitter/X (Primary Platform)

Most indie builders are on X. It's the default platform for building in public.

Strategy:

Post daily updates
Use hashtags: #buildinpublic #indiehacker
Engage with other builders
Share metrics openly

Indie Hackers

Community for founders building profitable businesses. Share monthly updates, ask for feedback, and learn from others.

Your Blog

Long-form monthly updates. Good for SEO and deeper reflections.

YouTube/TikTok

Video updates. Higher effort but more engaging. Good for showing product demos and tutorials.

Professional audience. Good if you're building B2B SaaS.

What NOT to Share

Trade Secrets

Don't share:

Unique algorithms (your competitive advantage)
Customer lists or private data
Security vulnerabilities

Proprietary Code

Open-sourcing is optional. You can build in public without making everything public.

Sensitive Metrics

Fine to hide:

Exact revenue (share ranges: "$10K-15K MRR")
Individual customer details
Anything under NDA

Building in Public Examples

Pieter Levels (@levelsio)

Builds 12 startups in 12 months publicly. Shares revenue, code snippets, and learnings. Nomad List and Photo AI are his hits.

What to learn: Extreme transparency. Revenue screenshots, code, failures.

Danny Postma (@dannypostmaa)

Built Headshot Pro to $1M ARR in public. Shared every milestone, metric, and failure.

What to learn: Daily updates, authentic voice, product screenshots.

Marc Lou (@marc_louvion)

Shares exact tech stack, revenue, and build process. Teaches others how to ship fast.

What to learn: Detailed technical breakdowns, template/boilerplate sharing.

The Update Template

Use this structure for weekly updates:

[Product Name] - Week X

✅ Shipped:
- Feature A
- Feature B

📈 Metrics:
- Users: X (+Y)
- MRR: $X (+$Y)
- Traffic: X visits

🚧 In Progress:
- Feature C
- Bug fix D

🎯 Next Week:
- Goal A
- Goal B

💡 Lesson:
[One thing you learned]

Common Mistakes

1. Only Sharing Wins

Share failures too. People connect with authenticity, not highlights reel.

2. Inconsistent Updates

Building in public requires consistency. Weekly minimum, daily ideal.

3. No Call to Action

Every update should end with: "Try it at [link]" or "Join the waitlist: [link]"

4. Copying Others' Voice

Find your own style. Some people are meme-heavy, others data-driven. Be yourself.

5. Not Engaging Back

Reply to comments. Follow other builders. It's a community, not a megaphone.

Metrics That Matter

Track these as you build:

Followers — audience growth
Engagement rate — likes, replies per post
Signups — how many people join your waitlist/product
Conversion rate — followers → paying customers

Don't obsess over follower count. 100 engaged followers > 10,000 passive ones.

FAQ

Should I build in public for my first project?

Yes. You have nothing to lose and an audience to gain. Even if the product fails, the audience carries over to your next project.

What if competitors steal my idea?

Ideas are worthless; execution is everything. No one will build it exactly like you. And you'll have a head start + audience.

How do I start if I have 0 followers?

Start anyway. Post daily. Reply to others. Share useful content. Growth is slow at first, then compounds.

Do I need to share revenue?

It's optional but powerful. Revenue transparency builds massive trust. Start with ranges if exact numbers feel uncomfortable.

Can I build in public for a B2B SaaS?

Yes. LinkedIn is better than Twitter for B2B. Focus on learnings, not just metrics.

Bottom Line

Building in public in 2026 is the best free marketing for developers and small startups. Share weekly progress, failures, and metrics on Twitter/X. Be consistent, authentic, and helpful. By launch day, you'll have an audience ready to buy.

The hard part isn't building — it's sharing. Start today. Share your first update. The worst that happens? No one sees it. The best? You build an audience that makes your launch successful.