A screenshot answers a visual question about one state on one device. Pair it with an acceptance criterion and a reproducible route to that state, rather than treating any image as completion.

Choose state → Navigate deterministically → Capture screen → Compare criterion
  1. 1Choose state
  2. 2Navigate deterministically
  3. 3Capture screen
  4. 4Compare criterion

Work through the example

Name an empty, loading and content state. Record what each screenshot can show and what needs a behavioral or accessibility test.

Start with a disposable branch and synthetic data. Write the expected outcome before changing the implementation, then keep the first failing result. This prevents a later repair from quietly redefining the task. The procedure below is grounded in the repository reference; its examples must still be checked against your project and installed toolchain.

Implementation reference

The following focused section is adapted from the maintained project guide. It preserves the source’s examples and limitations.

Visual Review Checklist

Area Questions
Hierarchy Is the primary action obvious within two seconds? Does visual weight match importance?
Spacing Are margins, gutters, and component gaps consistent with tokens?
Typography Does the screen use Dynamic Type and avoid fixed font sizes?
Color Does contrast pass, and do semantic roles survive dark mode?
Motion Does animation clarify state, avoid fighting layout, and honor Reduce Motion?
Haptics Are haptics tied to meaningful state transitions, not decoration?
Accessibility Are labels, traits, focus order, tap targets, and content size tested?
Runtime Does the captured screenshot/video prove the actual app state?

Acceptance and failure review

Checkpoint What to inspect If it does not match
Choose state Confirm the input and environment Preserve the failure and return to this step
Navigate deterministically Inspect the intermediate artifact Preserve the failure and return to this step
Capture screen Run the focused check Preserve the failure and return to this step
Compare criterion Record the observed result Preserve the failure and return to this step

Ask the agent to explain the smallest change that resolves the observed mismatch. Keep unrelated refactors out of the repair. A change that makes a warning disappear is not enough if the behavior or ownership contract has changed. Re-run the same acceptance check so the before and after results are comparable.

Evidence and limits

The baseline screenshot proves an empty screen was visible; it does not prove persistence or VoiceOver navigation.

This is an educational guide. Its presence in the series does not certify a completed client-specific lab. The series evidence record separates executed checks from exercises and blocked environments.

Inspect the source used in this lesson.

Recorded sample check

On Xcode 26.6 with an iOS 26.5 simulator, the Reading List verification script passed 3 unit tests and 2 UI tests. It exported six screenshots. This image is one of those outputs, not an AI-generated mockup. The sample uses JSON persistence and does not establish all-client app generation or a complete accessibility audit.

Reading List simulator capture: library state

What to do next

Next: Reviewing agent output before you commit: a focused checklist