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Block annoying scammers who hide behind fake phone numbers.

Do you get unwanted calls from phone numbers similar to your own? This is known as caller ID neighbor spoofing, and it's a common trick to try to get you to pick up the phone. Blocking these calls can be difficult because the number isn't always the same.

With Number Shield, you can block an entire group of numbers at once. Just enter a wildcard for each digit you want to block.

For example, if your number is 714-555-1234, scammers might use a number like 714-555-6789. Block all similar numbers by entering 714-555-####. Wildcards and numbers can be combined in any order you choose. Block international numbers, too!

Use the "Allow Contacts" option to make sure you don't miss calls from your family and friends.

Block numbers directly from your phone's missed calls screen. Just follow these steps:

1. Tap the “ i ” button next to the missed call.
2. Tap “Share Contact”.
3. Tap “Block Similar Numbers”. (If you don't see this action, tap “More“ to enable it.)
4. Now you'll see the Number Shield number entry screen. Tap “Done” to block calls from similar numbers.

Please note:

• Each number pattern can contain up to 7 wildcards, and up to 50,000,000 phone numbers can be blocked.
• Blocked calls are sent directly to voice mail.
• Number Shield does not block text messages.
• When “Do Not Disturb” is enabled on your phone, calls that should be blocked may appear in your phone's list of missed calls.

More information about caller ID spoofing in the United States is available from the FCC:


What’s New

Version 2.0.1

Fixed a bug that could prevent the "Block Similar Numbers" share action from adding a number pattern.

Ratings and Reviews

4.5 out of 5
222 Ratings
222 Ratings
DLW15 ,

Great App

This is still one of the best cures for robocalls. I’m surprised it doesn’t get mentioned more in the press. My original review is shown below.

This app is just what I was looking for. There are several highly rated subscription apps that handle robocalls and known scammers. However, I don’t get so many calls that I mind manually blocking these calls. What drives me nuts, however, are the calls from a range of numbers that are probably coming from the same entity. This app is perfect for this situation. I have been trying to keep the ranges down to a few thousand numbers because I think the developer said that Apple will only allow one million blocked numbers. No problem—this should do the trick. Did notice one glitch when setting up my iPhone X. The second number entered will keep the app loading. To fix this I just force quit the app, and all subsequent numbers entered fine.

Developer Response ,

Thanks for the great review.

Arduous ,

Works and respects your privacy

Very easy to use. It helped reduce the bogus calls I get (or at least it reduced the distraction of getting bogus calls because they go straight to voicemail, and most are not leaving messages so less work for me). Adding new spam callers from the phone's Recent "missed calls" list via the app's "share" feature is great. Finally, I'm glad to see this app's privacy policy is clear: "Number Shield does not collect any personal information." and "Your contacts are never transmitted or collected."

Jim617 ,

Truely works!

I was skeptical at first thinking this would be another app with bloated features that made claims of fixing a problem but didn’t.

I gave this app a week and to my surprise; it ACTUALLY WORKS! Not only is it simple to use, it isn’t filled with garbage features. My thanks to the developer for this app, best $0.99 I’ve ever spent! At last, I have control over my phone again from all these spoof calls. Bravo!



Kinnaman Software LLC
24.7 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2019 Kinnaman Software LLC


  • Family Sharing

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

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