Accessibility means people with different abilities can use your app. These terms come up when you test it.
- Screen reader: software that reads the screen aloud and lets users navigate by swipe and touch.
- TalkBack: the screen reader built into Android.
- VoiceOver: the screen reader built into iOS, iPadOS and macOS.
- Accessibility label: the text a screen reader says for an element, such as an icon button.
- Focus order: the order in which a screen reader or keyboard moves through elements.
- Contrast ratio: how strongly text differs in brightness from its background; low contrast is hard to read.
- Touch target: the area that reacts to a tap; too small a target is hard to hit.
- Dynamic type / font scaling: user-set text size that the app should follow.
- Reduced motion: a system setting to limit animations.
- Alt text: a text description of an image.
- Switch control: operating the app with an external switch instead of touch.
- WCAG: the Web Content Accessibility Guidelines, a widely used reference for contrast and other criteria.
Example: with a screen reader on, an unlabeled trash icon is read as just "button". The fix is a label such as "Delete note".
Related
- Testing accessibility as a volunteer tester
- Color contrast and touch target check
- Back to the app testing glossary; see also store and policy terms and AppReviewX terms.
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