Set up in about a minute
Safari extensions are off until you turn them on. These are the exact taps.
Open Settings, then Apps
On iOS 17 and earlier, skip this step: Safari is directly in the main Settings list.
images/ios-settings-apps.pngTap Safari
The list is alphabetical, so Safari is under S.
images/ios-settings-apps-safari.pngTap Extensions
Extensions is under the General section of Safari's settings.
images/ios-settings-safari.pngTap “Maps Instead” and turn it on
Extensions are off until you turn them on. If you use Safari profiles, switch it on for each one. Private Browsing has its own switch.
images/ios-settings-remapped.pngOpen a Google page in Safari, then Manage Extensions
Tap the button at the left of the address bar, then Manage Extensions, and make sure “Maps Instead” is on. It then appears in that same menu; tap it.
images/ios-safari-menu.pngChoose Always Allow…
"Allow for One Day" would mean setting it up again tomorrow.
images/ios-safari-prompt.pngChoose Always Allow on Every Website
Safari's warning is the same for every extension. Maps Instead only asks for Google's domains and Google's short-link domains, so it can't touch any other site. This option covers all of Google's sites at once; Safari treats each one separately.
images/ios-safari-every-website.pngTest it
Open the Maps Instead app and press Test it. Safari opens a real Google Maps directions link and Apple Maps should take over with directions to Apple Park.
images/ios-test.pngOpen the Maps Instead app once
That registers the extension with Safari. You can quit the app afterwards; the extension lives in Safari.
images/app-main.pngSafari, then Settings…, then Extensions
Tick “Maps Instead” in the list on the left. The app's Open Safari Extensions Settings button takes you straight here.
images/mac-safari-settings.pngAllow it on Google sites
With “Maps Instead” selected, click Always Allow on Every Website, or Edit Websites… to allow only Google. Maps Instead only ever asks for Google domains either way.
images/mac-permissions.pngTest it
Back in the Maps Instead app, the status card should now say On. Press Test it and Maps opens with directions to Apple Park.
images/mac-test.png
That's it. Tap any Google Maps link in Safari. Dancing optional.
Not working?
The support page covers the three things that account for nearly every problem, and how to report a link that misbehaves.