An Android iOS accessibility audit covers the same WCAG success criteria across both platforms, but the evaluation work is not identical. Each operating system has its own assistive technology, gesture model, focus behavior, and developer APIs. An auditor evaluates the app within the platform it was built for, using the native screen reader and accessibility settings on real devices. Two separate audits are required for two separate apps, even when the apps share visual design and feature parity.
The deliverable is one audit report per app, mapped to WCAG 2.1 AA or WCAG 2.2 AA, with platform-specific findings tied to the actual code and components on each operating system.
| Audit Factor | Android | iOS |
|---|---|---|
| Screen reader | TalkBack | VoiceOver |
| Accessibility API | AccessibilityNodeInfo, content descriptions | UIAccessibility, accessibility traits |
| Common framework | Android Views, Jetpack Compose | UIKit, SwiftUI |
| Text scaling | Font size and display size settings | Dynamic Type |
| Gestures | TalkBack swipe and explore by touch | VoiceOver rotor, two finger gestures |
| Audit output | Separate report tied to Android build | Separate report tied to iOS build |
Why Each Platform Requires Its Own Audit
An Android app and an iOS app are two distinct products. They share a brand and a feature set, but the underlying code, components, and assistive technology behavior are different. A heading on iOS is marked with the header trait. The same heading on Android uses a heading role through accessibility properties. The success criterion is the same. The implementation is not.
This is why an auditor evaluates each app on its native platform. Findings reference the actual code path a developer will work in. A note about a missing content description belongs in the Android report. A note about a missing accessibility label belongs in the iOS report. Combining them creates confusion for the engineering team and weakens the report’s value during remediation work.
What Differs Between TalkBack and VoiceOver
The screen readers behave differently enough that an auditor’s evaluation steps shift between platforms. VoiceOver uses a rotor for navigation between headings, links, form controls, and landmarks. TalkBack uses reading controls and local context menus. Swipe gestures, focus order behavior, and announcement patterns are not interchangeable.
An auditor verifies that interactive elements announce their role, name, and state on each platform using the screen reader that real users have. A button that announces correctly with VoiceOver may announce as a generic view in TalkBack if the developer set the label but missed the role on Android. The audit identifies these issues per platform.
Components and APIs Are Not the Same
Native components carry built in accessibility on each platform when used correctly. UIKit and SwiftUI components on iOS expose accessibility properties through UIAccessibility. Android Views and Jetpack Compose expose them through AccessibilityNodeInfo and semantics modifiers. Custom components break that built in behavior on either platform if the developer does not restore the missing properties.
The audit report reflects this. Issues are written against the framework the app uses. A SwiftUI accessibility modifier recommendation does not apply to an Android Compose screen, and the reverse is also true. Each report stands on its own.
How Does an Auditor Conduct an Android iOS Accessibility Audit?
The auditor evaluates each app against WCAG 2.1 AA or WCAG 2.2 AA criteria using the native screen reader, magnification, color and contrast settings, and keyboard or switch input where supported. The work is fully manual. Scans only flag approximately 25% of issues, which is not enough to determine conformance on either platform.
Real devices are part of the process. Emulators do not reproduce TalkBack and VoiceOver behavior with the fidelity needed for a conformance evaluation. The auditor walks through every screen and flow on a physical Android device and a physical iOS device, documenting issues with screenshots, steps to reproduce, and references to the relevant WCAG success criterion. This manual evaluation process produces the findings that drive remediation.
Scoping a Mobile Audit Across Both Platforms
Scope is set per app. The auditor counts unique screens, modal flows, and authenticated states on Android, then does the same on iOS. Two apps with similar feature sets often have different screen counts because of platform conventions, navigation patterns, and OS specific flows like share sheets or permission prompts.
Pricing follows scope. A mobile project covering both Android and iOS is two audit engagements bundled together, not one audit applied twice. The reports are delivered separately so each engineering team can work from their own document.
Audit pricing details for mobile apps are covered further in this video.
Reporting Findings That Engineers Can Act On
An audit report is only useful if the engineering team can apply the recommendations. Issues written generically lose value. Issues written against the platform’s framework, with the right API names and the right code references, get fixed faster.
The Accessible.org audit format keeps each platform’s findings in its own report. iOS engineers see iOS specific guidance. Android engineers see Android specific guidance. Project managers map both reports inside a single tracking workflow when needed, but the source documents stay separated by platform.
Frequently Asked Questions
Do I need separate audits for Android and iOS apps?
Yes. Each platform has its own assistive technology, accessibility APIs, and component frameworks. An auditor evaluates each app natively and produces a separate report so the engineering team for each platform can act on findings written against their own code.
Can the same WCAG criteria be applied to both platforms?
The WCAG 2.1 AA or WCAG 2.2 AA success criteria apply to both Android and iOS. The criteria are the same. The implementation guidance and the way issues surface during evaluation differ by platform.
Are emulators acceptable for a mobile accessibility audit?
No. Emulators do not reliably reproduce TalkBack and VoiceOver behavior, gesture patterns, or system level accessibility settings. A credible audit uses physical Android and iOS devices.
How long does a two platform mobile audit take?
Turnaround depends on the screen count and complexity of each app. The Android and iOS evaluations run in parallel where capacity allows, with separate reports delivered for each platform.
What if my app uses a cross platform framework like React Native or Flutter?
The audit still happens on each native platform because the cross platform framework compiles to native components and uses the underlying accessibility APIs. Issues identified on Android may not appear on iOS and the reverse is also true, even when the source code is shared.
Auditing mobile apps well means respecting what each platform actually does, not flattening the work into a single checklist. Two apps, two reports, evaluated where users actually use them.
Contact Accessible.org for a mobile audit quote: Contact our team.
