Tests What Code Review Can't

What if you never shipped a bug again?

Pie connects to your repo, tests every commit like a real user, and opens PRs to fix what breaks. No scripts to maintain. No noise to filter. Just results.

Try it for free

Connect your repo and staging URL. Your first scan is free.

P
Pie Loop
feat/checkout · now
Reading your diff
140+ sum + i.price * i.qty, 0)
141- sum + i.price, 0)
144+ return total - discount
145- return total
  → checkout flow, refund flow
Mapped 2 flows. Opening browser...
Bug found in checkout
Order total renders $0.00
checkout.ts:142
Price calculation skips discount merge after your change to the reduce function.
Tested on staging.acme.co/checkout
Generating fix...
Fix ready
PR #1293 — Fix discount merge in checkout total
Pie Loop · 1 file changed · +1 −1
CI passing
Ready to merge
Merge fix
Sound familiar?

Code review approved it.
The product broke anyway.

Production

Checkout total renders $0.00 for all orders

Discovered by a customer. 4 hours after deploy. CI was green.

847 errors in 30 min 12 customer reports
CI passed

PR #412 — Refactor payment reduce logic

Order total renders $0.00. Discount logic skips the merge after the reduce function changed.

3 approvals all checks pass merged to main

These are the bugs that pass every code review tool on the market. They don't live in the diff. They live in the running product. Pie catches them because Pie actually uses your product, the same way your customers do.

The numbers behind the gap

6.4x
more code generated by AI
That's 6.4 times more surface area to review, maintain, and break.
96%
of devs don't trust AI code
Only 48% check it before committing.
68%
more issues per AI-authored PR
CodeRabbit PR analysis, 2025

The Missing Layer

Your stack is complete, but your product is still vulnerable.

Layer 01

AI Coding Assistants

Layer 02

AI Code Review

Layer 03

Pie Loop

Testing the product, not just the code.

You don't have to choose between Pie and your code review tool. Pie is the next layer, and it catches the things code review was never designed to find.

How Pie Works

Three steps to zero bugs

Set up in five minutes. Connect your repo and staging URL — Pie handles the rest.

What triggers it

Pie knows what to test next

Connect your repo and Pie watches every commit and PR. It maps each change to the flows most likely to break.

Payment update? Test checkout. Auth refactor? Test login. Targeted coverage, not random regression.

src/payments/checkout.ts
@@ -42,7 +42,12 @@ export async function processPayment()
const cart = await getCart(userId);
const total = calculateTotal(cart);
- const charge = stripe.charges.create({
+ const intent = await stripe.paymentIntents.create({
+ amount: total,
+ currency: cart.currency,
+ automatic_payment_methods: { enabled: true },
});
Pie detected → affected flows
checkout flow
refund flow
staging.yourapp.com/checkout
Checkout Cart
4242 •••• •••• 4242
$0.00
Complete Purchase
P
Checkout Failure
Price shows $0.00 after discount applied.
How it finds bugs

Pie tests the product, not the diff

Most tools inspect code and guess. Pie opens your app, clicks through real flows, and checks what changed in the product itself.

No scripts. No brittle selectors. When the UI changes, Pie adapts and keeps testing.

What you get back

Bugs come back as fixes

When Pie finds a bug, it traces it to the code and opens a PR with the fix.

Your team reviews it, merges it, and moves on. No backlog ticket. No manual repro.

Ready for review
fix: handle null price when discount zeroes cart total
P pie-bot opened 4 min ago +3 -1

Root cause

When a discount coupon reduces the cart total to zero, calculateTotal() returns null instead of 0.

Fix

Added null coalescing in processPayment() to fall back to original price when discounted total is null.

CI passed No conflicts 1 approval needed
Features

What Pie catches for you

Autofix

Get PRs, not tickets

When Pie finds a bug, it opens a pull request with the fix. Root cause analysis included. Review, approve, ship.

PR Gate

One feed for every PR

Findings, severity levels, and direct links to the code. Know what shipped and what broke before your users do.

Coverage Loop

See exactly what Pie tested

Screenshots at every step. Pass/fail status for each flow. Who owns the branch, what changed, where it broke.

Auto-Tracking

Connect once, test every commit

Link your GitHub repo. Pie watches for changes and identifies affected flows automatically.

Vision-Based Testing

AI that uses your product

Not DOM selectors. Pie sees your app the way a real user does. Catches what scripted tests miss.

Test Generation

Tests that write themselves

Pie generates test cases from the PRs it discovers. Coverage grows as your product evolves.

Zero friction

Built for engineering teams

No scripts to maintain

Pie generates and adapts tests automatically. When your UI changes, your tests don't break.

No noise to filter

Only real bugs. No flaky tests, no false positives. When Pie reports something, it's worth your attention.

No context switching

Results show up as PRs in your existing workflow. Review, merge, move on. No dashboard to learn.

"It's like having a QA team that never sleeps, never complains, and actually writes the fixes."
— VP Engineering, Series B Startup

Works with the tools your team already uses

GitHub
GitLab
Web, iOS, Android
Your CI/CD
Build vs Buy

You've probably tried building this yourself

Most teams duct-tape together Codex agents, PR bots, and overnight scripts — and it works, for a while. Pie is what that setup looks like when someone builds it as a product.

"I've basically been doing that same workflow on my own, and it would be nice to not have to develop that. That seems like something that's not a core value of our company."
— VP Engineering, 1000+ person engineering org
What teams are saying

Real results from real teams

An iOS-only crash that happened after three specific steps? Our QA team never would have caught that. Pie found it on the first scan.

— Mobile QA Lead, Consumer Tech Startup

We used to find regressions a week after they shipped. Now we catch them before the PR even merges. It changed how we think about testing.

— Engineering Manager, Series A Fintech

The autofix feature is honestly what sold us. Finding bugs is one thing. Getting a PR with the fix already written? That's next level.

— Senior Engineer, E-commerce Platform

Your team pushes code.
Pie makes sure it actually works.

Try it for free

Connect GitHub or GitLab and see results on your actual codebase. It's free, there's no demo to sit through, and nobody's going to call you.

Frequently Asked Questions

Code review tools analyze your code. Pie tests your running product. CodeRabbit can tell you if your checkout function looks correct. Pie actually clicks "Buy Now" on staging and confirms the payment goes through. They read diffs. We use the app.

You authorize Pie on GitHub, pick a repo, and paste your staging URL. That's it. No SDK, no test scripts, no config files. Pie figures out your user flows automatically by exploring your app.

Pie reads your commit diffs to understand what changed, then maps that to the user flows it discovered when it first explored your app. If your payment form changed, Pie tests checkout. If you touched the nav, it tests cross-page navigation. It's not random.

Yes. Pie tests iOS and Android apps in simulators, not just web. Same 2-click setup. Same autofix PRs. Mobile-specific bugs like gesture failures, deep link issues, and in-app purchase flows are all covered.

Pie only reports bugs it can reproduce. Every finding includes a step-by-step recording of how to trigger it. If Pie reports it, it's real. No flaky tests, no "works on my machine" arguments.

When Pie finds a bug, it doesn't just log it. It traces the issue back to the source code, identifies the likely root cause, and opens a PR with a suggested fix. You review and merge, or reject if it's wrong. Most fixes merge without changes.

Pie runs on secure, isolated infrastructure. Your code never leaves your repo, we only read the diffs. Your staging environment is accessed the same way your CI does. We're SOC 2 compliant. Reach out and we'll share the documentation.

You can run both, or let Pie take over entirely. Pie can analyze your existing test cases and rebuild them using AI, with zero ongoing maintenance. Most teams that migrate see better coverage and stop dealing with flaky tests. We'll help with the transition.

Your first scan is free, no credit card required. After that, pricing scales with your usage. We offer packages for teams of all sizes. Reach out and we'll put together a quote.

Not currently. Pie runs as a managed service. For teams with strict data residency requirements, reach out and we'll discuss options.