With Prefix Changer you can manipulate your contacts phonenumbers.
This is useful when you are traveling a lot, or if you use callingcards or predialing codes.

Prepend areacodes to all, or specific contacts. It's also possible to change the areacodes from 00 to + or vice versa.

Prepend callingcard numbers or predialing codes to all, or specific contacts.

Before there will be any changes to your phonebook, you can see a preview of all changes. To keep track of all changes you can take a look at the logfile.

Backup and restore your phonebook.

Transfer your contacts to any System with standardised vCard, sent by E-Mail with Prefix Changer.

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If you have questions about our app we are at all times at available.

What's New

Version 1.3

The app logo was changed.
Currency Exchange Converter is now free.
In return, advertising is displayed now.

Ratings and Reviews

Kas1370 ,

Doesn't work! Or is spam?

Opens and asked to make a backup"for security? And then crashes(but is in background) and will keep popping up to make a backup and will not work.

Birdarise ,

Doesn't work

Just downloaded it, it asks permission to create a backup. I agree then it closes.


Peter Lakatos
8 MB
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Rating
Rated 4+
© Peter Lakatos


  • Family Sharing

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

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