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[ARTICLE · art-125859] src=learningto.co ↗ pub= topic=ai-tools verified=true sentiment=· neutral

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

A developer built a free interview-prep platform covering 16 topics for Google L4-L6 candidates after being unable to afford existing paid preparation tools. The site offers structured data structures and algorithms material, interactive visualizations, a Python playground, AI-powered feedback, and progress tracking, including a skill tree that maps prerequisites in learning order. The tool is organized into 8 data structures topics, 6 algorithms topics, and 2 concepts topics.

read1 min views1 publishedSep 10, 2026
Show HN: I couldn't afford interview prep, so I built a free alternative
Image: source

Google L4-L6 Prep

16 Topics

the interview

Structured prep covering the data structures and algorithms big-tech interviews expect. Interactive visualizations, a Python playground, AI-powered feedback, and progress tracking.

Google Interview Readiness

0Just Starting

Start practicing to build your score

Not sure where to start?

Follow the skill tree - learn concepts in the right order with prerequisites mapped out.

View Learning Path

0/16

Topics Mastered

0

Challenges Solved

0

Active This Week

Data Structures #

8 topics 0% avg mastery

Algorithms #

6 topics 0% avg mastery

Concepts #

2 topics 0% avg mastery

source & further reading
learningto.co — original article
── more in #ai-tools 4 stories · sorted by recency
── more on @google 3 stories trending now
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