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Unlock the full interview prep suite
All 18 design studio problems, system design questions with solutions, unlimited AI reviews, and complete guide access.
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Get started with the basics
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Get Started- 1 Design Studio problem (Deep Research Agent)
- 5 AI review attempts
- 3 system design questions
- 1 applied scenario
- 3 knowledge Q&A categories
- Preview access to all topics
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Unlimited practice & feedback
$29/month
- All 18 Design Studio problems
- Unlimited AI reviews
- All 18 system design questions with solutions
- All 5 applied scenarios
- All 8 knowledge Q&A categories
- Full access to 87+ guide sections
- Architecture diagrams & Mermaid charts
- Priority support
Compare plans
| Feature | Free | Premium |
|---|---|---|
| Design Studio problems | 1 | All 18 |
| AI review attempts | 5 | Unlimited |
| System design questions | 3 | All 18 |
| Applied scenarios | 1 | All 5 |
| Knowledge Q&A categories | 3 | All 8 |
| Guide sections | Preview | Full access (87+) |
| Solutions & walkthroughs | Locked | All unlocked |
| Architecture diagrams | Limited | All included |
| Priority support | - | ✓ |
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