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AI code review that teaches
Paste a function, a file or a diff. Get specific, kind, actionable feedback — and understand why so you don't make the same mistake twice.
Free to start: 10 reviews a month, no card needed.
A function, a file or a diff. Pick the language (or let it detect it), your level, and what you want the review to focus on.
Findings ranked by severity, each pointing at the line, explaining the why and giving a concrete fix, with a corrected snippet where it helps.
Every review ends with the strengths worth keeping and the 1-3 concepts that would level up this code the most.
An illustrative example of one finding. Real reviews list up to eight, plus strengths and what to learn next.
Your code
async function saveAll(users) {
users.forEach(async (u) => {
await db.save(u);
});
return "done";
}forEach ignores the promises your callback returns, so saveAll returns "done" before any save has finished, and errors are lost.
Fix: await the saves, in parallel or one by one.
await Promise.all(users.map((u) => db.save(u)));
Every finding comes with the reasoning and the pattern behind it, not just a red squiggle.
Beginner, intermediate or advanced: the depth and tone of the review adapt to you.
Security, performance, readability or testing. Get the review you actually need right now.
Your code is line-numbered before review, so findings reference the exact line they are about.
Each finding includes a concrete suggestion and, where it helps, a short corrected snippet to compare against.
Reviews are saved to your account so you can revisit them. They are visible only to you.
Works with
Reviews are saved to your private history and are visible only to you. To generate a review, your code is sent to an AI model provider, so don't paste secrets or credentials. Read the privacy policy for who processes what, and where.
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See checkout
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Up to 12,000 characters per review, roughly 300 lines. For bigger files, review the part you are worried about.
Yes. Each review, including the code you submitted, is saved to your private history. To produce the review, your code is sent to an AI model provider. The privacy policy has the details.
No. It is a fast, patient second pair of eyes, and it can be wrong. Treat findings as leads to check, not verdicts, and keep humans in the loop for anything important.
The Team plan has five seats: you plus four teammates. Add teammates by email on the billing page. While the subscription is active they get unlimited reviews, and you can remove them at any time. Each person's reviews stay private to them.
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Paste something you wrote today and see what a patient senior would say.
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