Hello builders, What started as a side project for my own personal use is now being used by more than 100k users every week. 100k. I still have moments where I open the analytics and just stare at the number because it makes no sense to me. A few months ago this was something I built because I needed a simple floor planner for my house renovation. Now we are getting days with 10k+ new users. As a solo builder, this is the part you dream about. You build something nobody cares about. You keep working on it. You question whether you're wasting your time. You fix bugs at stupid hours. You add features nobody notices. You keep going anyway. And then one day, people actually start showing up. Then more people show up. Then suddenly you're looking at numbers you never seriously thought you would reach. This post is not really about bragging or marketing SpacePlanner. I mainly wanted to write it because I know how many people in here are building something right now and wondering if any of it can actually work. I was that person. And the biggest thing I learned from this whole experience is that it is absolutely possible to build something real, something that scales, ALONE. That still feels crazy to write. I've worked as a founding engineer in startups across cybersecurity, fintech and healthcare, and I know the old startup reality very well. Everything was a race against runway. How much money is left in the bank? How long can we afford the R&D team? How quickly can we close the next customer? When is the next round? How much more money do we need just to survive long enough to maybe reach profitability? I'm not saying that world is gone. But something has changed. A huge part of what used to require a full team can now be done by one experienced person with the right tools and enough obsession. Frontend, backend, infrastructure, product, analytics, support, SEO, design decisions, testing, deployment. Not perfectly. Not magically. But enough to build something that real people can use at scale. And AI is a huge part of that. There is a caveat though. AI does not turn someone who has no idea what they're doing into a great engineer or product builder. But if you already know how to build, it gives you insane leverage. That is the part I think people underestimate. The whole "one-person company" thing used to sound like some futuristic idea people talked about on podcasts. Now it's happening. Base44, Photopea, Carrd, and many others already proved parts of it. But honestly, reading about it and experiencing it yourself are two completely different things. The growth SpacePlanner is getting has gone way beyond anything I expected. We're averaging around 3k to 4.5k new registered users per day, and for most of the product's life, signup wasn't even required (currently it is required for temporary). People could just open it and start using it. And the feedback has been completely overwhelming. I've received more than 2,000 emails in the last two weeks. Some people love it. Some people hate something. Some found bugs. Some send me long emails explaining exactly how they use it. Some ask for features I never thought of. Some are teachers. Some are architects. Some are just people trying to move a couch around their apartment. And every time I read those emails I think the same thing: People are actually using this thing. Something that did not exist a few months ago. Something I built alone. That feeling is very hard to explain. And I know there are builders reading this with 10 users right now. Maybe 2 users. Maybe zero. And you're wondering if you're building something nobody will ever care about. I've been there many times. I've built tens of products over the years. Most of them went nowhere. That's why this one taught me something I wish I understood much earlier. Build something you actually need. Yes, I know. It sounds painfully cliché. But SpacePlanner started because I had a real problem. I was renovating my house and needed to send my architect a simple floor plan. I tried tool after tool. Some were too complicated. Some wanted money before I even understood what they did. Some forced me to sign up immediately. Some felt like I needed a course just to draw four walls. At some point I just got annoyed and thought: I'll build the damn thing myself. That was it. No giant market analysis. No investor deck. No "AI disruption opportunity." I just wanted something better. And that leads to another thing I now strongly believe. Boring is gold. You do not need to build whatever is trending on Twitter this month. You do not need to build another AI wrapper because everyone is talking about AI. I'm literally an AI founding engineer by background. I've built production AI systems for financial analysis, document analysis, healthcare coordination and other serious use cases. And yet SpacePlanner still barely uses AI. I am in absolutely no rush to force it in. The problem I'm solving is not "people need more AI." The problem is "people want to plan a space easily." Solve the damn problem. That's it. Another thing that made a massive difference was removing friction. Free and no signup was almost a cheat code for me. Think about it from the user's perspective. Nobody knows you. Nobody cares about your startup yet. You are not Canva. You are not Notion. You are some random person on the internet asking them to create an account before they even know if your product is useful. Why would they? Let them use it. Let them touch the product. Let them get value. Then, when there is an actual reason to sign up, ask them. Maybe they want to save a project. Maybe they want to sync between devices. Maybe you're giving AI credits. Fine. But don't ask for commitment before you've earned it. I think this one decision helped me more than a lot of "growth hacks" people talk about. The same thing happened with email. I started sending a simple welcome email. Not some beautifully designed SaaS lifecycle campaign. Just a normal email asking people: What did you hate? What confused you? What should I fix? What are you trying to do with the tool? That email generated around 2,000 responses. Two thousand. That feedback has probably influenced the product more than any roadmap I could have created by myself. Then there was SEO. I knew almost nothing about it. Seriously. So I spent a week learning. YouTube videos. Case studies. Semrush free trial. Keyword research. Long-tail pages. Search Console. Build, publish, see what happens. Nothing fancy. No secret SEO guru strategy. Just one week of focused work on something I barely understood. And that one week ended up being ridiculously valuable. The product itself followed the same pattern. SpacePlanner V0 looked almost embarrassing. It was basically Microsoft Paint with walls. A few basic tools. Dimensions. Very little else. If I had waited until it felt like the product it is today, I probably would never have launched it. So I shipped the ugly version. Then I kept shipping. And shipping. And shipping. Now the problem is completely different. After tens of thousands of plans being created, my biggest challenge is not adding more features. It's stopping myself from ruining the simplicity that made people like it in the first place. That is much harder than I expected. A lot of people have also asked me how I'm actually running all of this alone, what stack I'm using, what broke when traffic exploded, what the infrastructure costs, how I'm deploying things, what tools I'm using, and how much AI is actually involved. I already started documenting all of that on my X because it's much easier to keep updating there than stuffing everything into one massive Reddit post. I'll link it below for anyone who wants the technical side of the story. And one last thing. I don't want this post to make solo building sound easy. It isn't. There are days where everything breaks. There are days where you spend hours fixing something stupid. There are users angry at you. There are costs you didn't expect. There are features you were sure people wanted and nobody uses. There are nights where you genuinely ask yourself why you're doing this. But then you open your inbox and someone tells you they used your product to plan their new home. Or a teacher tells you they're using it with students. Or you open analytics and see thousands of people using something that once existed only on your laptop. And suddenly all of it feels worth it. That's the part I wanted to share. If you're building something right now and nobody cares yet, don't automatically assume that means nobody ever will. Keep building. Keep learning. Keep improving. Sometimes nothing happens for months. Then everything happens at once. For detailed thread on how i did it and what technology i used: check this post on x For context on the story: check this reddit post Cheers!   submitted by   /u/One_Progress_1044 [link]   [comments]