Debugging and code review
Best AI tools for code review and debugging
4 tools for builders and vibe coders. Filter by what you're willing to pay.
Our shortlist for code review and debugging is Sentry, CodeRabbit, Greptile and heal.dev. 3 of the 4 have a free plan or free tier, and we checked all 4 free-tier notes against official pricing pages or other official pages. Every free option here is limited, so check the note next to each tool.
4 tools for code review and debugging
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- Limited free tierPricing checked · Oct 13, 2026 · source for Sentry's pricing (opens in a new tab)$26/mo lowest paid tier
- Limited free tierPricing checked · Oct 14, 2026 · source for CodeRabbit's pricing (opens in a new tab)$24/user/mo billed annually ($30 monthly)
- Limited free tierPricing checked · Oct 13, 2026 · source for Greptile's pricing (opens in a new tab)$30/mo lowest paid tier
heal.dev (opens in a new tab)
Runs your app in a production-like sandbox, hunts for reproducible bugs and security holes, and hands back a failing test for each one
Your tool? Get a badgeTrial onlyPricing checked · Oct 22, 2026 · source for heal.dev's pricing (opens in a new tab)Price unverified
How to choose
Start with what you're willing to pay. Sentry, CodeRabbit and Greptile have a limited free tier. heal.dev needs a trial or a paid plan.
Where we could read a price on the official pricing page, the lowest paid plans start at: Sentry $26/mo; CodeRabbit $24/user/mo billed annually ($30 monthly); Greptile $30/mo. Prices change often, and we don't always know whether a figure is billed monthly or annually, so confirm on the tool's site.
- Sentry is the pick for catching prod errors: error and performance monitoring. Free tier: Developer free: one user, error monitoring and tracing, email alerts.
- CodeRabbit is for reviewing pull requests: AI pull-request reviewer. Free tier: free reviews for public (open-source) repositories; private repos need a paid plan from $24/user/month billed annually ($30 monthly).
- Greptile is for reviewing larger codebases: AI code review with full-codebase context. Free tier: Starter free: 50 credits per month; Pro $30/seat/month with 14-day trial.
- heal.dev is for bugs that code review misses: runs your app in a production-like sandbox, hunts for reproducible bugs and security holes, and hands back a failing test for each one. Free tier: free trial with no credit card. Open-source projects can get free credits by messaging the team on X.
Free tiers last checked Oct 22, 2026 against each tool's official pricing page, or another official page (linked on each tool). Prices change often, so confirm on the tool's site.
Questions
- Which AI tools for code review and debugging are free?
- Sentry (limited free tier), CodeRabbit (limited free tier) and Greptile (limited free tier). heal.dev doesn't have a free tier.
- Which has the cheapest paid plan?
- Of the prices we could read on official pricing pages, CodeRabbit starts lowest at $24/user/mo billed annually ($30 monthly). We couldn't verify a price for heal.dev.
- How did you check these free tiers?
- We compared all 4 free-tier notes on this page against each tool's official pricing page, or another official page, most recently on Oct 22, 2026. Each checked tool links to the page we used.
- Which tool should I pick?
- Sentry is the pick for catching prod errors. CodeRabbit is for reviewing pull requests. Greptile is for reviewing larger codebases. See the full list below.
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