iOS 27 gave Siri its own app, and it keeps your conversations. Apple says the Siri app "uses iCloud to privately sync conversational history across a user’s products". If you ask Siri about work (a client, a price, a delivery date), that question sits in a history on every device signed in to your Apple ID.
What you need
An iPhone on iOS 27
2 minutes
1. How long Siri keeps your conversations
Tom's Guide, testing the iOS 27 developer beta: "Open Settings on your iPhone, tap Siri and select Keep Conversations. From here you can change the setting from Forever to either 30 Days or 1 Year."
Pick 30 Days. Tom's Guide: "iOS 27 will automatically purge any Siri conversations older than your chosen timeframe."
Tom's Guide found it set to Forever on the beta ("Apple assumes you want to keep that paper trail forever."). Check what yours says; the release build may differ.
2. Which devices get a copy
The history syncs through iCloud to your "Mac, iPad, Apple Watch, or Apple Vision Pro". Go through the devices signed in to your Apple ID. A family iPad on your Apple ID gets your Siri history too.
3. What else ends up in the Siri app
MacRumors: "All of your Visual Intelligence Siri requests are saved in the Siri app so you can revisit them later." So the photos and screens you ask Siri about sit in the same history as your questions. Open the Siri app once to see what's there.
The mistake to avoid
Setting 30 Days on your iPhone and forgetting the shared iPad. The history is synced, so check who else can open a device on your Apple ID.
If your iPhone is managed by your company, your IT team may control these settings.
Sources: Apple Newsroom, 14 Sep 2026; Tom's Guide, 23 Jul 2026; MacRumors iOS 27 guide. Read 27 Oct 2026.