Manual QA practice, scored automatically

Find the bugs.Prove the impact.

A practice lab for manual testers who care about craft. Explore a real product, uncover deliberate faults, and write reports that are graded against the answer key — not a multiple-choice quiz.

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Deterministic scoringHidden answer keyJira-style reports

faultline / live-audit

Challenge brief

Level 01

Live audit workspace

A five-fault audit against a live build. The ledger is the source of truth.

Totals reconcile

Promotion applies once

Checkout stays responsive

Confirmation is truthful

15:42

Log defect

QA-104

Cart total decreases after entering a negative quantity

ValidationHigh

Evidence captured

component: Cart
signal: trg_8f2c...0a91

Final score

425/ 500

Open challenges

4 live builds. 24 challenges.

Every scenario ships with a seeded build, a hidden answer key, and evidence tracking that verifies what you actually exercised.

View all challenges

Commerce5 Fintech19

Live scenarioMediumNorthstar SupplyCommerce

Checkout & Cart Audit - Level 1

Audit a live storefront's cart, promotions, and checkout flow. Find the five faults hiding in plain sight.

Start audit

25 min timebox5 injected faults500 points availablePreview build

Catalogue, smart cart, promotions and responsive checkout, wired with deterministic data-testid hooks. Wired with deterministic data-testid hooks.

Automation-ready

Medium · 5 faults

Cart Integrity & Search - Level 2

Stress the cart's inventory and discovery controls. The catalogue looks calm until quantities and filters meet edge cases.

20 min500 pts

Medium · 5 faults

Promotions & Delivery - Level 3

A promotion and delivery audit. Verify that every discount and delivery promise survives the full cart journey.

20 min500 pts

How it works

A real test session, not a quiz.

The sandbox is instrumented at the point of failure. When you trigger a seeded fault, a secure beacon is recorded. At submission, your written reports are matched to the hidden key.

Try a full session See the full walkthrough

/01

Explore

Work the product end to end. Edge cases, repeated actions, and narrow viewports are where the faults live.

/02

Report

Write a structured Jira-style defect with component, category, severity, repro steps, and expected versus actual.

/03

Get graded

See exactly which faults you found, which you missed, and which reports diluted your score.

Ready when you are

Your next bug report could be the one that matters.

No setup, no multiple choice. A 25-minute audit with a deterministic score at the end.

Launch the workspace