Question 1

How is this different from grinding LeetCode?

Accepted Answer

LeetCode trains one skill: algorithm puzzles. Forward Deployed Engineer loops also test SQL under time pressure, debugging judgment in messy customer environments, and how you communicate trade-offs. Rung covers the whole loop (coding with real tests, live SQL, scenario drills, and behavioral prep) in one guided 8-week path.

Question 2

What does Rung cost?

Accepted Answer

The core is free forever: the full study plan, topic library, video lessons, behavioral prep, and Easy and Medium coding problems. Rung Pro ($19/mo or $149/yr, or a one-time $39 Prep Pass for 90 days) unlocks the AI mock interview, Hard problems, SQL Practice, and Scenario Drills.

Question 3

Do I need to install anything?

Accepted Answer

No. Everything runs in your browser, including the code editor. Python runs via Pyodide and JavaScript in a sandbox, with no local setup at all.

Question 4

Which languages are supported?

Accepted Answer

Python and JavaScript, with a real editor and test runner for both. You can switch languages on any problem.

Question 5

I'm rusty. Is this for me?

Accepted Answer

Especially. Rung is built for engineers rebuilding their skills after time away. It is calm, beginner-friendly, and designed to rebuild confidence one rung at a time.