Startup description The tool I made is called CheckYourStartupIdea.com. It basically validates users' startup ideas. Users input their idea, and the software searches through the whole of Reddit for relevant Reddit posts that are either discussing the idea itself or the problem the idea is solving, then it extensively searches through the whole web to find if your startup idea has direct competitors or not.

Basically, our tool finds out if your startup idea is original and has market demand. You get a list of the Reddit posts, and a list of your direct competitors (if they exist), and also a comprehensive analysis summary, conclusion, and originality/market demand scores.

Key highlight We launched on April 21st and have already seen great traction:

140 signups (Averaring 35 new sign ups a day)

25 paying users (Averaging 7.5 paying users a day)

A 21% conversion rate

And $116 in revenue with $111 in profit.

Tech Stack Frontend: React (Create React App)

Backend: Node.js with Express

Database: MongoDB (via Mongoose)

Hosting: Google Cloud Compute Engine (e2-small VM running Debian 11), with Nginx as a reverse proxy and PM2 to manage the Node.js process

API Dependencies:

OpenAI API (GPT-4oi for content analysis)

Google Custom Search API (to surface Reddit discussions and competitor sites)

Firebase (for user authentication)

Stripe (for payment processing) 

Marketing and growth We haven’t done any formal marketing. We just shared the app on Reddit and Twitter a couple of times, and people loved it. We reached 120 users in just 3 days. ** Startup assets** Email list currently with 140 emails (35 new ones a day) Domain

Summary I see huge growth potential here, especially in the hands of someone who knows how to market effectively — which admittedly isn't my strength. That said, even with just a few casual posts on Reddit and Twitter, the response has been amazing: 130 signups and 25 paying users with zero ad spend all within the first 3 days of launch.

(We launched on April 21st, so we don't have MRR yet. We've been live for just 5 days and have generated $115 in revenue so far. If we project this early traction to $100 per week over a month, our estimated MRR would be around $400.)