The Google contacts can be synced to an Iphone and IPad. You can change a contact, which will change on all your devices that is linked to your Google account.
Step 1: Open setting app on your IPhone and IPad.
Step 2: Go to Account & Passwords > Add Account > Google.
Step 3: Enter your Google username ID and password.
Step 4: Allow Goggle to access your contacts by enabling the slider