The “Siri & Search” feature in iOS allows Apple’s virtual assistant to analyze how you use individual applications. Siri reads data from supported apps to suggest shortcuts, pull relevant information into Spotlight search results, and offer context-aware recommendations on the Lock Screen. While this deep integration creates a highly personalized experience, it can be problematic for applications containing highly sensitive data, such as private medical diaries, encrypted messaging apps, or secure corporate clients. You may not want Siri indexing the contents of these specific apps or suggesting their usage patterns to anyone casually looking at your phone.
This guide explains how to completely disable Siri & Search integration for a specific, individual app on an iPhone, ensuring its data remains siloed and invisible to the OS-level assistant.
Disable Siri & Search for an Individual App
To enforce a strict boundary between a specific application and the Siri intelligence engine, we must explicitly revoke its permissions within the iOS settings menu.
- Unlock your iPhone and open the main Settings app.
- Scroll down until you reach the alphabetical list of all installed third-party applications at the bottom of the Settings menu.
- Tap on the specific app you wish to isolate (e.g., Signal, MyChart, or a corporate app).
- In the app’s specific settings menu, tap on Siri & Search.
- You will see several toggle switches governing how Siri interacts with this app. To completely isolate it, toggle Learn from this App to the Off (grey) position.
- Under the “While Searching” section, toggle Show App in Search to Off.
- Under the “Suggestions” section, toggle Show on Home Screen, Suggest App, and Suggestion Notifications to Off.
Verify the Configuration Lockdown
By toggling these switches, you instruct the iOS CoreDuet daemon (which manages Siri’s machine learning) to instantly purge any existing behavioral models related to this app and ignore it entirely moving forward.
To verify the lockdown is active, pull down on your iPhone’s home screen to open Spotlight Search. Type the exact name of the application you just restricted. Because you disabled “Show App in Search,” the app icon itself will no longer appear in the search results, nor will any content indexed from within the app. The application is now completely hidden from Siri’s intelligence framework and can only be launched by manually finding its icon on the Home Screen or App Library.