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PrefixPlus allows you to add the prefix number to phone numbers in Contacts at once.
Phone numbers with the prefix number will not be replaced but added to contacts.
For example, if you set the number "+81" and the label "Call(JP)", contacts will be updated as follows.

[Before update]
Home: 03-1234-5678
Mobile: 090-1234-5678

[After update]
Home: 03-1234-5678
Mobile: 090-1234-5678
Call(JP) Home: +81-3-1234-5678
Call(JP) Mobile: +81-90-1234-5678

Be sure to back up contacts as security against accidents. For example, if you back up to iCloud, you can restore contacts at some point in the past.
Please note that you can add prefix numbers to contacts synchronized with local, iCloud, Gmail only.

What’s New

Version 6.4.0

・Fixed the problem that "Update Contact" button was not activated when the network was a concern.

Ratings and Reviews

4.8 out of 5
243 Ratings

243 Ratings

nerocu ,

easy to use


yzyz29 ,



Thiha786 ,


I want to Back up now Asdfghjkl-/12/-

App Privacy

The developer, yasuhiko nagahara, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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