🚀 I built Website Growth Tracker to spot fast-growing websites before they go mainstream

Hey Indie Hackers 👋

I’ve been building a side project called Website Growth Tracker. The idea came from my own frustration: tools like Similarweb or Semrush are great, but they usually only tell you about websites that are already big. I wanted something that shows what’s starting to grow right now.

So I built Website Growth Tracker. Every month, it highlights websites with the fastest traffic growth based on domain registration + traffic data. The goal: help founders, marketers, and investors discover emerging websites and digital trends earlier than others.

🔑 Features so far:

• Monthly ranking of the fastest-growing websites

• Domain-level traffic estimates & growth signals

• Keyword difficulty and CPC insights

• Free plan (10 queries/day), Pro plan for unlimited

💡 Why I made this

• As a founder, I always wanted to know what niches were starting to explode before they became competitive.

• I’ve been experimenting with data sources (domain registration + Similarweb API) to make this more accurate and affordable.

• It started as a weekend hack, but I realized it could be useful for others too.

🚧 Challenges

• Balancing API costs vs. keeping a free plan available.

• Designing a UI that’s simple but still provides enough insight.

• Marketing — figuring out how to get early adopters who actually care about growth data.

✅ Next steps

• Add trend dashboards (category-specific, e.g. AI tools, SaaS, ecommerce).

• Build alerts (e.g. email notification when a new site is growing fast).

• Collect feedback from early users (that’s where you come in 🙌).

👉 You can check it out here: websitegrowthtracker.com

Would love to hear your thoughts:

• If you track website trends, what’s missing here?

• Would you pay for early-access to data on fast-growing sites?

• Any ideas on features that could make it more valuable for founders?

Thanks for reading — happy to answer questions and share more about the tech stack or growth plan if anyone’s curious!