Last updated October 27, 2026.
DuoZoom doesn't collect, store or share any personal information, and it doesn't use analytics, advertising or tracking. It has no account and makes no network requests of its own.
Your zoom settings, including any sites you give their own zoom, are saved by Safari on your device. While a page is open, DuoZoom reads the size of Safari's window to tell whether your iPhone Duo is folded, and the address of the page to look up its zoom. None of this leaves your device.
Safari asks you to allow DuoZoom on websites because changing a page's zoom requires access to that page. DuoZoom doesn't read or change a page's content.
If this policy changes, the new version will be posted on this page with a new date.