SarvShare: How a Lab Problem Became a Product 500 People Used Without Marketing

The best products don’t come from brainstorming sessions or market research decks. They come from a moment where you look around a room full of people struggling with the same stupid problem, and you think: someone should fix this.

Then you realize. That someone is you.

The Lab. The Problem. The Daily Frustration.

If you went to an engineering college in India, you know exactly what a computer lab looks like. Rows of identical desktops. A slow LAN connection. A lab attendant who guards the room like it’s Fort Knox. And a practical session that ends in 45 minutes, whether you’re done or not.

Every single lab session ended with the same ritual. You’ve just spent 45 minutes writing code, building a circuit simulation, or completing a CAD model. The practical is over. Now you need to get that file off the lab computer and onto your phone, so you can reference it later, submit it, or show it to someone.

And here’s where the chaos began.

"Log into WhatsApp Web on the lab computer. Or send it to yourself by email. Or use a USB drive you probably don’t have. Or just... retype everything tomorrow."

That was the reality for 200+ students every single day across multiple labs. Log into WhatsApp on a shared computer, your credentials sitting there for anyone to see. Send a 40MB file through Gmail and wait three minutes for it to upload on a congested lab Wi-Fi. Plug in a personal USB that the antivirus software would immediately flag and quarantine.

It was absurd. We were engineering students. We were supposedly learning to build the future. And we couldn’t move a file five feet from a desktop to our pocket.

The Idea That Changed Everything

SarvShare didn’t come from a whiteboard session. It came from one very specific afternoon in the Networks lab when a friend asked me, for the fourth time that week, to help him get his assignment file off the lab machine.

I thought: what if you didn’t need any accounts, no cables, no email? What if you just opened a browser on the computer, got a 4-digit code, typed it into your phone, and the file just... appeared?

That was the entire product vision. Four digits. One tap. Done.

No sign-up. No cloud storage. No middleman. Pure peer-to-peer. The file goes directly from one browser to another over a WebRTC connection, the same technology that powers video calls. It never touches a server. It never gets stored anywhere. It just travels.

Building It, Fast, Focused, Real.

I built the first version in a few days. The MVP was deliberately minimal:

• Open the app on your computer. A 4-digit session code appears.
• Open the app on your phone. Enter the code.
• Select a file on the computer. It transfers instantly.

No accounts. No login. No file size caps (within reason). No waiting for a cloud upload. The moment you hit send, the file starts moving directly to your phone, peer to peer, browser to browser, nothing in between.

The UI was clean and dead simple. Large code display. One file picker. A progress bar. That was it. Because in a lab setting, you have 60 seconds to do this before the next batch of students walks in. You don’t want features. You want it to work.

The Reaction I Didn’t Expect.

I deployed it on Vercel. Shared the link in a few WhatsApp groups. Didn’t write a single line of marketing copy. Just said: "made something, try it."

Within two weeks, something happened that I hadn’t planned for. SarvShare became the first tab students opened when they sat down at a lab computer. Not WhatsApp. Not email. SarvShare.

It spread word of mouth, purely because it worked. No friction, no learning curve, no setup. You just get it immediately. And once you use it once, you never want to go back to the old way.

"Bhai yaar yeh toh sach mein kaam karta hai." basically every friend who tried it.

By the time I checked the analytics, more than 500 unique users had used SarvShare. Not installs, actual file transfer sessions. People who had a real problem, found the tool, and used it to solve that problem immediately. That’s product-market fit in its purest, most unambiguous form.

And if you search "SarvShare" right now, it ranks first.

Why This Matters Beyond the Lab.

SarvShare is a small app. It does one thing. But it taught me something enormous about how to build products.

The best products solve a problem so specific it almost feels embarrassing to talk about. Not "improve productivity for knowledge workers." More like: "help engineering students get their lab files off a shared computer without logging into WhatsApp." The specificity is the point. The sharper your problem definition, the more violently your solution resonates with the people who have it.

I didn’t validate with surveys. I didn’t build a waitlist. I felt the problem in my own hands every week, and I knew exactly how many other people felt it too. That’s as strong a signal as you’ll ever get.

SarvShare & The Bigger Picture: Sarvagya AI

SarvShare isn’t a standalone product. It’s one piece of something much larger.

I’m building Sarvagya AI, a one-stop ecosystem of tools for students, designers, founders, and builders. Not a single monolithic app, but a collection of focused, beautifully designed micro-tools, each one solving a real problem, each one connected under a single platform. Think of it as the Swiss Army knife for the Indian builder generation.

SarvShare is the proof-of-concept that this idea works. Small tool. Real problem. Real users. Zero marketing spend. That’s the template for everything coming next under the Sarvagya AI roof.

Each tool will follow the same philosophy:

• Solve one problem, extremely well.
• No friction to start using it.
• Works in the real world, not just in demos.
• Looks and feels like something you’re proud to use.

What’s Next.

SarvShare is live, ranked, and being used daily. The next version will bring folder support, higher file size limits, and a cleaner transfer history so you can re-download something you sent earlier. Eventually, authenticated rooms, so your college’s lab always has your SarvShare profile pre-loaded.

But honestly? The core will stay the same. Four digits. One tap. Done.

SarvShare was built because I was tired of logging into WhatsApp on a lab computer. It got used by 500+ people because I wasn’t the only one. That’s the whole story, and it’s the only story that matters when you’re deciding whether to build something.

→ Try SarvShare, it’s free, instant, and requires zero setup.