Free
$0
Included with every account
- Free Easy practice catalogue
- Grading included
- Cloud design saves included
Start with Free
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Practice distributed systems on a live canvas, then test designs through simulation.
Illustrative personaWhat it does
Interactive system-design simulator and interview preparation with a live architecture canvas, discrete-event simulation, practice problems, and AI-assisted evaluation.
Product highlights
- Interactive architecture canvas
- Discrete-event system simulation
- Practice problems and guided evaluation
Official product preview
See system design come alive.
Watch ArchiDepth turn architecture diagrams into an interactive workspace where you can build systems, simulate real workloads, surface bottlenecks, and evaluate design decisions.
Watch on YouTubeAvailable plans
Start free. Subscribe monthly or yearly and cancel anytime, or pay once for a fixed term with no renewal.
Pro
Recommended$29/ month
Renews every month · cancel anytime
Everything in Free, plus:
- AI coach, lesson tutor and reviews with prepaid credits
- AI mock interviews with prepaid credits, up to 45 min
- Full practice catalogue
- Premium problems
- Advanced simulation
- Detailed reports
- PDF reports
Subscribe monthly
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Prices include GST in India. You pay in INR with an Indian billing address, in USD otherwise; USD payments need a card issued outside India.
AI credit packs
AI credits fund tutoring, coaching, reviews, and mock interviews from one shared balance. Once your paid plan is active, buy them from your account.
1,490 AI credits
$5.99
7,450 AI credits
$24.99
Save 17%
14,900 AI credits
$39.99
Save 33%
- Free is included with every account
- Subscriptions renew until you cancel, anytime
- One-time payments cover a fixed term and never renew
- INR prices include GST
Compare plans
Every plan side by side, with the same lines the cards above summarise.
Scroll sideways to see every plan.
| Feature | Free | RecommendedPro |
|---|---|---|
| Billing | ||
| Ways to pay | Included with every account |
|
| AI coaching and mock interviews | ||
| AI coach, tutor and reviews | Not included | with prepaid credits |
| AI mock interviews | Not included | with prepaid credits, up to 45 min |
| Practice and simulation | ||
| Practice problems | Free Easy | Full |
| Premium problems | Not included | Included |
| Graded submissions | included | included |
| Advanced simulation | Not included | Included |
| Saved designs | included | included |
| Interview reports | ||
| Detailed reports | Not included | Included |
| PDF reports | Not included | Included |
Questions about plans
Anything else? Read the refund policy or contact us.
Is there a free plan?
Yes. Free is included with every account and is never paid for. The comparison above lists what it includes; upgrade to a paid plan whenever you need more.
What is the difference between subscribing and paying once?
A subscription renews every month or every year until you cancel it, and you can cancel anytime. A one-time payment covers a fixed term, such as 3 or 12 months, and never renews, so you are not charged again.
Which currency will I pay in?
Prices include GST in India. You pay in INR with an Indian billing address, in USD otherwise; USD payments need a card issued outside India.
Can I buy more AI credits?
Yes, on a paid plan. Once your plan is active, add a pack (1,490 AI credits, 7,450 AI credits, 14,900 AI credits) from your account.