Code Review Wars throws real, messy production code at you — with nasty bugs hidden inside — then grades your review like a staff engineer. Get sharp. Get hired.
✅ 3 free reviews • no credit card • one-time pricing, no subscription
id is interpolated straight into the query.The interviewer shares a diff and the clock starts. Where do you even look first?
Nice catch on the naming. Shame about the SQL injection and the race condition.
You've ground 500 algo problems. None of them taught you to read someone else's code.
There's a better way to train 👇
No toy puzzles. Every session is fresh, production-style code from a domain you pick.
Pick a language — TypeScript, Python, Java, C#, C++, Go, Rust, SQL — and the kind of system: fintech, healthcare, e-commerce. We generate real code that fits, with bugs baked in.
Click any line to drop an inline comment. Flag the injection, the N+1, the broken auth — exactly how you'd review a teammate.
An AI staff engineer scores your review, shows what you missed, and coaches you up.
See a graded example →Subtle bugs, injection, race conditions and N+1s — the stuff that actually slips into prod, not contrived puzzles.
Critical issues score more than nits. Learn to triage like the clock is ticking and the on-call pager is hot.
A GitHub-style heatmap, per-category skills and streaks show exactly where you're sharp — and where you're soft.
A Codewars-style ladder from 8 kyu to 1 dan. Ranked on accuracy and severity, not just speed.
See the ideal review after every session. Learn the senior-engineer reasoning, then go again.
Specific, actionable feedback on every review — what you caught, what you missed, and how to level up.
Based on publicly posted candidate interview reports. These companies are not affiliated with, and do not endorse, Code Review Wars. Sources →
Hey — I built Code Review Wars after watching brilliant engineers (myself included) freeze the second an interviewer shared a pull request. We grind algorithms for months and spend zero time on the one thing we do every single day at work: reading and reviewing other people's code.
So I made the tool I wish I'd had — real code, real bugs, instant feedback. No fluff, no subscription. Just reps until catching the bug becomes reflex.
Built solo and launched this month. No users to quote yet, so there are 3 free sessions instead — judge it yourself.
1 credit = 1 full session: code generation + AI grading. No subscription. Credits never expire.
Purchased credits are non-refundable — that's what the free sessions are for. Details in the Terms.
Walk in having reviewed a hundred bugs. Start free — 3 reviews on the house, no card.
No subscription. No card. Credits never expire.