Twitch 2! Contacts Formatter

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244 reviews
Content rating
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About this app

I have revamped the old "Twitch! Contacts Formatter" app using the new material design views with a speed boost for people with thousands of contacts to update.

Twitch 2! Contacts Formatter is a Contact Number Editor and Formatter for the mildly OCD (and international travellers, or people who just like their contact numbers orderly formatted).

Remember to open the "navigation drawer" for more options.

✔ Single click to standardize phone number format
✔ International & National formats
✔ Editable contact numbers
✔ Select particular numbers to update
✔ Skips invalid numbers
✔ Auto-detect country
✔ Update multiple contact sources

Single Click to Standardize Phone Number Format
Twitch! is a great time saver; easily fixing all the numbers to a standardized and uniform format.

Contact numbers are automatically displayed; all valid numbers that can be formatted are checked for you. You just confirm the selection, click update and sit back while the application do all the formatting magic.

International & National Formats
You can save in International or National formats (consistent with the definition in ITU-T Recommendation E.123).

NATIONAL format standardizes all numbers to a uniform look and feel.. No arbitrary dashes '-' or spaces ' ' littered across your contact list.

800 1234567
(800) 123 45 67
800.123.4567 (eyelid *twitch*)
800 1234-567 (eyelid *twitch, twitch*)
standardized format -> (800) 123-4567

Twitch uses Google's phone number formatting to customizes according to the countries' norm. E.g. US will be (xxx) xxx-xxxx; France will be xx xx xx xx xx. This app works for all countries.

INTERNATIONAL format lets you call home from other countries (without manually appending the international calling code).

International format -> +1-800-123-4567

Editable Contact Numbers
Click on any number, and a dialog will appear for you to edit them individually

To delete a number, just clear the edit dialog and click "OK".

Select Particular Numbers to Update
There is a global checkbox to untick all the numbers, so that you can manually select which number to save.

skips invalid numbers
The application leaves invalid numbers alone and shows a non-intrusive "!".

you decide if you want to ignore the numbers, edit or delete them.

Auto-detect Country
The application uses the country code of the SIM card in your device as the default country code.

You can change this default from a drop-down menu (useful if you have contacts from many different countries, or if there are no SIM card in your device).

Update Multiple Contact Sources
Contacts from different sources with write access (Google contacts,contact numbers in the SIM card and the phone, Whatsapp contacts, Exchange ActiveSync contacts, etc) can be saved.

Phone numbers linked to Google contacts are automatically synchronized with Google.

Contact Me
If this app is useful to you, please take a moment to give me a positive rating.

Mail to: for any feature requests, bugs or general comments (to sooth your twitching OCD eyelids).
Updated on
Aug 3, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit

Ratings and reviews

237 reviews
Jerry G
January 12, 2023
I think it works, but has a very poor UI. When invalid contacts are listed and I tap the Trashcan icon, the app _selects_ that contact (checkbox on the left). Strange behavior for deleting, unless marking for confirmation. But then there is no "Delete selected" button, only a "Save selected" button. Why would one want to save the contacts for which one tapped the Trashcan icon?! (And presumably NOT save other numbers?)
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Chris Villareal
August 1, 2021
This a great app to clean up all your contacts' phone numbers to the international format or to a country number format you prefer. It also cleans up the numbers in your cloud, too. Such as, Google Contacts. And it's fast and easy; genius app.
2 people found this review helpful
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Jean Hopp
May 3, 2022
Helped me fix duplicates in the Phone app caused by formatting inconsistencies between my Google contact list and WhatsApp contact list. Thanks! My OCD was killing me.
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What's new

Added GDPR Consent for UK and EEA Countries.

updated library
carrier: 1.202
geocoder, prefixmapper: 2.212
libphonenumber: 8.13.18

For the release notes, refer to