Two independent products. Pick the one you need — or get both. Start free either way.
| Feature | Starter (Free) | ⭐ Practice Pro |
|---|---|---|
| Practice questions | 10 | 100+ |
| PySpark, Python & SQL topics | ✓ | ✓ |
| Real in-browser code execution | ✓ | ✓ |
| Hints | Basic | Full |
| Model solutions & explanations | — | ✓ |
| Company-tagged questions | — | ✓ |
| Difficulty filters (Easy → Hard) | — | ✓ |
| New questions added weekly | — | ✓ |
| Priority support | — | ✓ |
"The only platform with real PySpark execution. The questions are spot-on for what top companies actually test in data engineering rounds."
"Instant feedback after every run changed how I learn. I could iterate fast and really understand where my code was going wrong."
"DataCodingHub is the most targeted prep I have found for data engineering roles. The SQL and PySpark questions are exactly what gets asked in real interviews."
You can cancel your subscription at any time from your account settings. You will keep full access until the last day of your current billing period — no partial refunds needed, no surprise charges.
Yes — 100% real PySpark 3.5 running on a live server. No simulation, no shortcuts. Your code runs in an isolated environment and the actual output is returned to you.
Nothing at all. Everything runs in your browser. No Spark installation, no Python setup, no Docker required.
Yes. Cancel any time from your account settings. You keep full access until the last day of your billing period — no mid-month cutoffs, no data loss.
Free tier includes 10 questions. Pro unlocks 100+ questions across PySpark, Python and SQL tracks, with new questions added every week.
Questions are tagged by company including Amazon, Meta, Google, Databricks, Snowflake and more — sourced from real interview reports.
No — they are two independent products. Practice Pro ($25/mo) unlocks coding interview questions. Certification Prep ($10/mo) unlocks DP-750 exam question sets. You can subscribe to either or both.
Yes — Sets 1 and 2 of DP-750 each include the first 10 questions free with full explanations. No credit card required.