Janu Lingeswaran

We design + build AI and SaaS products for ambitious founders
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[Janu Lingeswaran @JanuBuilds]

I made $76,200 in July 2026.

🪶 FeatherFlow — $72.5k (best month ever!)
🔗 Effortless Backlinks — $2.3k (2nd best month ever!)
🎓 Instructor side gig — $1.1k
📦 BoilerplateHub — $234 (ads)

July was INSANE. 🤯 Pure adrenaline, start to finish.

My best month ever, by far.

And I'm endlessly grateful for it.

4 years ago, entrepreneurship was just a dream, nothing I could grasp.

2 years ago, I left my job and I was scared.

Today, I get to live that dream. 🙏

Full transparency: these are revenue numbers, not profit, not my salary. FeatherFlow is a (TALENTED!) team. And Effortless Backlinks is split 50/50 with my co-founder.

A bunch of people here inspired me (@SimonHoiberg for example). I hope I can inspire others too. ❤️

Keep going!

[Marc Lou @marclou]

I made $98,417 in July 2026.

⭐️ TrustMRR — $44K
📈 DataFast — $26K
🏴‍☠️ Ship or Die — $13K
🧑‍💻 CodeFast — $6K
🐥 Twitter — $4K
⚡️ ShipFast — $4K
🍜 Indie Page — $785
🛡️ ByeDispute — $132
🦐 SuperShrimp — $187
🧾 Zenvoice — $69
🎞️ YouTube — $102
🌱 HabitsGarden — $104
📚 WorkbookPDF — $38

✂️ Margins: ~85%

All-time high for my SaaS and my startup marketplace.

Everything is built, designed, and promoted with my little hands while spending 2 hours a day in the gym, closing the laptop at 6 pm, and sleeping 8 hours.

Keep going!

[Janu Lingeswaran @JanuBuilds]

A prompt I used this week when a backend ticket made no sense to me:

"I don't understand this ticket. Explain it as if you were the lead developer and I were the product manager. What is it for, and how can our QA test it?"

The answer gave our team a clear test plan.

[Janu Lingeswaran @JanuBuilds]

"Why hire an agency to build software? Just use Claude Code."

Our clients, swamped with board meetings, investor calls and hiring while running a media company, a medical billing company or a luxury travel agency: ⁉️

[Janu Lingeswaran @JanuBuilds]

@crackticker fler

[Janu Lingeswaran @JanuBuilds]

@abhishekgawade_ engineer 40h/week, designer 20h, pm 10h maybe

[Janu Lingeswaran @JanuBuilds]

Test one feature before you fund the full product.

Last week a founder came to us with a big app plan. We suggested a small test version in the browser first, so people can try the idea before it goes to the App Store.

[Janu Lingeswaran @JanuBuilds]

@abhishekgawade_ just do it!

And for context: It's for a team (engineer + designer + pm) so it's very cheap. We need to ask for more

[Janu Lingeswaran @JanuBuilds]

@abhishekgawade_ 14k

[Janu Lingeswaran @JanuBuilds]

@robj3d3 I am confused. What do his affairs have to do with whether he's a good CEO? Because she was a spy?

[Janu Lingeswaran @JanuBuilds]

@abhishekgawade_ in general or retainers?

[Janu Lingeswaran @JanuBuilds]

@abhishekgawade_ Very different, depends on scope

[Janu Lingeswaran @JanuBuilds]

The Ntree website. Wireframe on the left, final design on the right. We set the structure and the text first, then the visual design.

[Janu Lingeswaran @JanuBuilds]

One rule behind this editor: you can only delete a block in the default view. In every other view you can only hide it. So a change in one view never breaks another.

[Janu Lingeswaran @JanuBuilds]

@itsshayanali

[Janu Lingeswaran @JanuBuilds]

We built PureClaim for Artheon Medical.

Their team typed numbers from insurance letters into spreadsheets by hand. PureClaim reads the letters with AI instead.

One letter used to take about 45 minutes. Now it takes 5 to 8.

[Janu Lingeswaran @JanuBuilds]

How we designed and built Ntree, from the first wireframe to launch: https://t.co/f4LEPryz5M

[Janu Lingeswaran @JanuBuilds]

One rule behind this editor: you can only delete a block in the default view. In every other view you can only hide it. So a change in one view never breaks another.

[Janu Lingeswaran @JanuBuilds]

We built the Ntree editor from simple blocks with a live preview.

There are complex rules underneath, but editing a page should feel as easy as any link-in-bio tool.

[Janu Lingeswaran @JanuBuilds]

@peer_rich Glückwunsch + alles Gute euch beiden!!

[Janu Lingeswaran @JanuBuilds]

We built PureClaim for Artheon Medical, a US medical company. It reads their insurance letters with AI.

Before building the product, we tested the AI on their real letters. Once that worked, we built everything else around it.

[Janu Lingeswaran @JanuBuilds]

The full story: https://t.co/f4LEPryz5M

[Janu Lingeswaran @JanuBuilds]

The Ntree website. Wireframe on the left, final design on the right. We set the structure and the text first, then the visual design.

[Janu Lingeswaran @JanuBuilds]

@scheemunai True!

[Janu Lingeswaran @JanuBuilds]

More and more clients send us long briefs written with AI.

We ask AI to shorten it to the main points. Then we get on a call and ask about the goal.

We rarely let clients write the requirements. They give us the goal, and we turn it into requirements.

[Janu Lingeswaran @JanuBuilds]

More and more clients send us long briefs written with AI.

We ask AI to shorten it to the main points. Then we get on a call and ask about the goal.

We rarely let clients write the requirements. They give us the goal, and we turn it into requirements.