To save your info to your Google Account, turn on sync.
When you sync
- You can see and update your synced info on all your devices, like bookmarks, history, passwords, and other settings.
- You'll sign in automatically to Gmail, YouTube, Search, and other Google services. If you were signed in before turning on sync, you'll stay signed in.
- If you change devices (like if you lose your phone or get a new laptop), you'll get your synced info back.
- You’ll personalize your experience in other Google products with your Chrome history if you turn on Web & App Activity.
- Chrome may combine declared age and gender information from your Google account with our statistics to help us build products better suited for all demographics. This information is used only in aggregate form.
Important: Only turn on Chrome sync with devices you own. If you're using a public computer, use guest mode instead.
Sign in and turn on sync
To turn on sync, you'll need a Google Account.
- On your iPhone or iPad, open the Chrome app
.
- At the bottom right, tap More
Settings
- Choose the account you want to use.
- Tap Yes, I'm In.
. 
Settings 
Sign out and turn off sync
After you sign out and turn off sync, you can still see your bookmarks, history, passwords, and other settings on your device.
- On your iPhone or iPad, open the Chrome app
- At the bottom right, tap More
.
- Tap your name.
- Tap Sign Out.