Two AI models, not one — the second double-checks the first and flags when a fix is actually wrong. Bugs, security, and plain-English fixes for solo devs and juniors.
Drop in a snippet or upload a file, pick a mode, and get a structured review in seconds — bugs, security, and quality issues with exact line numbers and fixes.
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On GitHub
Automatic review on every PR
Add one workflow file and every pull request gets reviewed automatically, with findings posted inline — no manual runs, no context switching.
Add one workflow file and a repository secret. Every new pull request gets bug, security, and quality findings posted inline — no manual runs. 5 free reviews to start, then $12/month.
Powered by LearnCodeGuide · re-runs automatically on every push
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Double Check — a second opinion, built in
Turn on Double Check and a second, independent AI model re-verifies the findings, flagging any disagreement — so you can trust what ships. Available on Pro and Pay-as-you-go.
What it does
One workflow. Full coverage.
LearnCodeGuide combines bug detection, security checks, refactor suggestions, code explanations, and test ideas in one place. Pick the mode you need and get structured results with line references and fixes.
Bug detection
Catch logic mistakes, edge cases, and likely runtime failures before they hit production — with severity, line, and replacement code.
Security scanning
Detect SQL injection, XSS, unsafe auth flows, and weak input handling — with severity and a concrete fix.
Refactor suggestions
Cleaner, shorter, easier-to-maintain code — specific extractions and simplifications, not vague notes.
Explanations
Understand what the code does, why it fails, and what each fix changes — great for legacy or unfamiliar code.
Unit test ideas
Useful test cases around edge cases, invalid input, and common failure paths — based on what the code does.
All-in-One mode
Run every check in a single pass — bugs, security, refactor, explanation, and tests — in one structured report.
How it works
Three steps. Under a minute.
No IDE plugin. No CI setup. No configuration file. Paste the code, pick a mode, get results.
1
Paste code or upload a file
Choose a language — JavaScript, Python, Java, C#, or C++ — and pick a mode: Debug, Security, Refactor, Explain, Tests, or All-in-One.
2
Run the analysis
LearnCodeGuide evaluates the snippet and returns structured findings. Optionally activate Double Check to run a second AI model for extra confidence.
3
Review exact findings and fixes
See each issue by severity — critical, high, medium, or low — with the exact line number, why it matters, and the replacement code to apply.
Built in the open
Not a faceless startup. Built by a developer, for developers.
A
Built by Andrei.D
Founder · LearnCodeGuide
Solo dev here. I built this after a bug my linter waved through shipped to production. It's a fast, honest review before you ship, not another faceless AI tool. I read every message, so just reply.
A 14-day trial with no card required. Upgrade to Pro when you are ready, buy credits once if you do not need a subscription, or automate reviews with GitHub Actions.
TRIAL
$0/14 days
Try the full product before committing. No card required.
It analyzes pasted or uploaded code for bugs, security risks, refactor opportunities, code explanations, and test ideas — depending on the selected mode. All-in-One runs everything at once.
Do I need to upload a full project?
No. You can start with a single function, file, or snippet. LearnCodeGuide works on whatever you paste — no project setup or full codebase required.
What modes are available?
Debug, Security, Refactor, Explain, Tests, and All-in-One. There is also a Double Check option that runs a second AI model on the same code for extra verification — available on Pro and PAYG plans.
How is this different from a normal AI chat tool?
LearnCodeGuide is structured around code analysis. Every result includes severity levels, exact line numbers, and replacement code — without needing to write a prompt or interpret an open-ended answer.
What languages are supported?
JavaScript (including TypeScript and JSX), Python, Java, C#, and C++.
Does it replace human code review?
No — it accelerates it. LearnCodeGuide catches common bugs, security issues, and quality problems and explains the fixes, but it is an assistant, not a replacement for human judgment, testing, or domain knowledge.
Start analyzing your code in seconds.
Free trial · No credit card required · JS, Python, Java, C#, C++ · Results in under 5 seconds