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I couldn't afford interview prep, so I built a free alternative

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HN · launched Sep 10, 2026 · 41 upvotes (top 17%) · 0 views

Niche: technical interview prep platforms · 94 launches, 5 in the last 7 days ▼ -50% · Explore this niche →

Category and tags

  • HR & recruiting
  • Vertical SaaS
  • B2C
  • AI feature
  • Commercial product

Visit website ↗ Source listing ↗

Could you build this?

Yes This is an interview prep platform with interactive DSA visualizations, a browser-based code runner (e.g., Pyodide), and standard LLM feedback integration, all readily built via vibe coding.

Discussion

20 comments analyzed.

Competitors mentioned: ChatGPT, Gemini, Claude for practice, CLRS (Introduction to Algorithms), Google for finding questions

Concerns raised: LLM can restate premium questions behind paywall, Timed testing discriminates against ADHD/anxiety, Paywall unnecessary when free LLM alternatives exist, Light mode text readability issues, Hamburger menu overlaps with site icon

Feature requests: Fix light mode background colors for text cells, Adjust hamburger menu overlap on mobile

Competitors

Other products that read as similar to this one : 270 launches clear the similarity bar, closest 8 shown.

Attention rank: #26 of 271 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 311 days after the earliest competitor.

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.