Not sure if you have the most up-to-date information on your contact? Do you have one piece of contact information but want to reach out in a different way? Contacts 411 enables you to easily find new and updated contact information — emails, phone #'s, mobile #’s and addresses.

*Search for new email, phone numbers, mobile numbers and addresses on your existing contacts by connecting to your address book while keeping it private to you.

*Search for more and confirm information on new contacts before you add them to your address book.

*One-touch calling, texting, emailing and mapping of updated and confirmed contact info.

*Easy one-touch saving of new contact info.

Contacts 411 Unlimited Plan can be purchased as one month pass for $19.99 or yearly subscription for $49.99/year. Your annual subscriptions will auto-renew. You can turn off auto-renew at least 24 hours before your billing period ends. You can do this in your iTunes Account Settings. With this purchase only your iTunes Account will be charged. Your iTunes Account will only be charged once your purchase is confirmed.

Auto-restore of your subscriptions is available. If you should ever change devices, your Contacts 411 Account will be automatically restored upon signing into the app.

Terms of Service:
Privacy Policy:

What’s New

Version 2.51.1

Minor UI tweaks and text changes.
Other bug fixes and technical improvements.

Ratings and Reviews

3.6 out of 5
17 Ratings

17 Ratings

Schrammmic ,

Convenient, intuitive, useful!

Contacts411 is an incredibly useful app. It helps me stay up to date on the contact information of all of my clients. The simple interface hides its very powerful search function. Great for finding addresses, phone numbers, and even emails! Whether you’re looking to confirm existing info or find new info, Contacts411 does it all. This is particularly well-suited to anyone working in non-profit development, for-profit sales, or any other business where relevant information is key.

Developer Response ,

Thank you for your review and we are thrilled that you find the app useful. Since we are a new app, we would so appreciate learning what is working well for you and what is not. Please reach us via email at We are constantly trying to improve all aspects of the experience and welcome all feedback.

Schubej ,


In order to access, you have to create a link by providing an email address and confirm by tapping a bar on the email. I attempted twice to create a link but each time I received an email I immediately tapped the bar only to get told that link had expired. Since there are no white pages any longer getting a home phone number can only be obtained electronically. As society “improves” in getting information it gets that much worse and more difficult.

Developer Response ,

We are sorry that your link did not work. We would be happy to help you finish the sign up process. Please contact us at and we will resolve your issue.

GoldenShip ,

Very easy to use.

I received new information on several family members for a celebration invite. So convenient and inexpensive.


Infinite knot Inc
42.6 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2017 Infinite Knot LLC
In-App Purchases
  1. Unlimited Plan $4.99
  2. Unlimited Plan $49.99
  3. Unlimited Plan $19.99


  • Family Sharing

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

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