XeroGent Contacts Studio
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For Windows 10 and 11 · Free

Every contact file, readable and clean.

Open the contacts from an old phone, a SIM backup, Google or Outlook. Contacts Studio repairs names that came out as symbols, merges the same person saved three times, checks every number and puts the list back on any phone.

Download for Windows See it working

Version 0.2 · about 81 MB · updates itself

Samsung Contacts.vcf Open

Worth a clean-up

12,000contacts read in 0.15 s
384 msto check all of them
240+countries and regions, number rules built in
0files changed: saving always makes a new one
Saves for
  • Samsung and Android
  • iPhone and iCloud
  • Google Contacts
  • Outlook
  • Excel
  • Older phones (vCard 2.1)
  • vCard 4.0

How it works

Four steps, the same as in the app

The step bar at the top of the window always shows where you are. Every change can be undone, and nothing is written until you save.

  1. 1

    Open

    Drop in one file or several: vCard 2.1, 3.0 or 4.0 (.vcf), Google or Outlook CSV, or an Excel sheet. Old Samsung and SIM exports included. The files themselves are never changed.

  2. 2

    Check

    A quality score out of 100, and what is behind it: numbers by country, mobile or landline, valid or not, the operator they started with, groups and labels.

  3. 3

    Fix

    Merge the duplicates, add missing country codes, repair garbled names, drop empty entries. One button does all the safe fixes; you can also tick contacts and act on just those.

  4. 4

    Save

    Back for Samsung and Android, iPhone and iCloud, Google, Outlook or Excel, as a new file that is read back and checked after saving. Or keep an encrypted copy in My cloud.

A tour

What you see in the app

Screens from version 0.2.4 with a sample of 12,000 contacts.

Home: 12,000 contacts, health 59 of 100, and what to do next.

Home says what to do next

The health of the whole list, and the next three things worth doing, each with its own button. Search from here and everything on Home is about the matches only.

What it fixes

The problems contact files really have

Garbled names repaired

Arabic, Urdu, Hindi and other names that came out as أحمد read correctly again, from whatever old encoding the phone used.

Duplicates merged

The same person saved twice with the number written differently becomes one card, keeping every number and email. A family or office number no longer joins different people.

Every number checked

Country, mobile or landline, valid or not, with Google's phone number data built into the app. Nothing is looked up online.

Search, then act on the matches

Type a name, a number or a group on Home. The best matches appear as you type, and every figure and button then works on those contacts only.

Tick and act together

Click, Shift+click or Ctrl+A in the list, then delete, merge, add the country code, set groups, export or copy only those.

Undo anything

Each fix is one step on the undo list. Nothing reaches a file until you save, and saving makes a new file.

Before and after

From a file nobody can read to a card that is right

One contact as an old Samsung phone exported it, with the name in quoted-printable bytes and the same number written twice, two different ways. Next to it, the same person after Fix. Drag the handle to compare.

  • The name decoded and repaired, in its own script.
  • The number recognised as one, written once with its country code.
  • Mobile or landline and the country worked out on your PC.
Before 
BEGIN:VCARD
VERSION:2.1
N;CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:
 =D8=AD=D8=B3=D9=86;=D8=A3=D8=AD=D9=85=D8=AF
FN:أحمد حسن
TEL;CELL:00974 5512 0934
TEL;CELL:55120934
TEL;HOME:
END:VCARD
After Fix
أح
أحمد حسن 1 number · it was written twice
+974 5512 0934 Qatar · Mobile
Saved as vCard 3.0 · UTF-8

Imports cleanly on every current phone, iPhone included.

Privacy

Your contacts stay yours

  • Your contact files are only read, and only on your PC. Saving always makes a new file.
  • Numbers are checked with data built into the app. No number is ever looked up online.
  • My cloud is optional. What you save there is encrypted on your PC with your password before it leaves, so XeroGent cannot read it.
  • If something goes wrong, the app tells XeroGent what failed, with names, numbers, emails and file names taken out first. Settings › Error reports switches it off.

My cloud, step by step

  1. Your passwordnever leaves your PC
  2. PBKDF2, 600,000 roundsmakes a lock key and a separate sign-in key
  3. AES-GCMencrypts the list on your PC
  4. Only the locked copy is sentup to 30 versions, 512 MB

A 20-character recovery key is shown once when you create the vault. Without your password or that key, nobody can open it, XeroGent included.

Download

Contacts Studio 0.2

For Windows 10 (2004 or later) and Windows 11, 64-bit. The setup window installs it in a minute; the app then updates itself.

Released
-
Size
-
SHA-256
-
Download the setup Windows Installer (.msi)

Asking the server for the newest version…

Releases

What changed, version by version

  1. 0.2.45 November 2026
    • Home's health card shows the right fixes again after a file opens, and Fix everything works from Home.
  2. 0.2.331 October 2026
    • The update window fits every screen, with its buttons always in view.
  3. 0.2.231 October 2026
    • While you search, Home and its buttons work on the matches only.
  4. 0.2.131 October 2026
    • Search from Home, with the best matches as you type.
  5. 0.2.031 October 2026
    • A new look with four clear steps, a Home that says what to do next and a short welcome tour.
    • Ticks on every contact, to act on several together.
    • My cloud keeps a private copy, encrypted on your PC.
    • Sharper duplicate finding.
  6. 0.1.030 October 2026
    • The first version: open, check, fix and save vCard, CSV and Excel contacts.

Questions

Good to know

What does it cost?

Nothing. Contacts Studio is free, with no account, no trial and no adverts. My cloud is free too.

Are my contacts sent anywhere?

No. Your files are opened and checked on your PC, and numbers are checked with data inside the app. Only when you choose to save to My cloud does a copy leave your PC, and it is encrypted with your password first.

Does it change my original file?

Never. The app only reads the files you open. Saving always writes a new file, and the app reads it back to check it.

How do I get the contacts off my phone?

On Android, open Contacts, then Manage contacts or Settings, and choose Export to a .vcf file; copy it to your PC. On iPhone, sign in at iCloud.com, open Contacts, select all and export a vCard. Google Contacts and Outlook can export CSV, which the app opens as well.

And back onto the phone?

Save for Samsung and Android or for iPhone and iCloud, then open the new .vcf on the phone (or import it at contacts.google.com or iCloud.com). For a single person, the contact card in the app shows a QR code the phone's camera can read.

Which Windows does it need?

Windows 10 version 2004 or later, or Windows 11, on a 64-bit PC. Everything it needs comes in the setup.

How do I remove it?

From Settings › Apps in Windows, like any app. The XeroGent setup window opens and removes the app, its shortcuts and its settings. The contact files you saved stay where you saved them.

About

XeroGent Contacts Studio

Every contact file, readable and clean, back on any phone. Contacts Studio is one of XeroGent's standalone Windows apps, made and looked after by XeroGent.

Newest version
0.2
Runs on
Windows 10 2004+ and Windows 11, 64-bit
Made by
XeroGent

Built with

Clean up your contacts tonight.

Free for Windows 10 and 11. Version 0.2, and it updates itself.

Download for Windows