What is App Tracking Transparency (ATT)?
App Tracking Transparency is an iOS framework requiring apps to ask user permission before tracking activity across other apps and websites for advertising purposes.
Introduced in iOS 14.5, ATT requires permission before an app can access the IDFA for tracking across other companies’ apps and websites. The system prompt lets each user allow or decline that access.
When the user declines, the app cannot use the IDFA for cross-company tracking. IDFA-free product analytics or attribution may still operate when permitted by the app’s settings and privacy policy; ATT is not a switch for every form of analytics.
ATT is one part of Apple’s broader privacy framework, alongside App Store privacy disclosures and privacy manifests. Each mechanism covers a different part of data collection, tracking, and required-reason API disclosure.
Summio remains usable if you decline ATT. Without permission, Summio does not access your IDFA and disables IDFA-dependent Meta and TikTok tracking; IDFA-free analytics and attribution may still operate according to your settings and the Privacy Policy.
Read more about SummioCommon questions
What happens if I tap "Ask App Not to Track"?
Summio cannot read your IDFA and remains usable. IDFA-dependent Meta and TikTok tracking is disabled; IDFA-free analytics or attribution may still operate according to your settings and the Privacy Policy.
Is ATT the same as Apple’s Privacy Nutrition Label?
No. The Privacy Nutrition Label is a static disclosure on the App Store listing about what data the app collects. ATT is a runtime prompt about cross-app tracking specifically. An app can disclose data collection on its label and still be obligated to ask via ATT.
Can I change my ATT decision later?
Yes — iOS Settings → Privacy & Security → Tracking. You can toggle individual apps on or off there, or disable cross-app tracking globally for all apps.