iPhone Screenshots


Do you get spam calls where the phone number looks a lot like yours? Some spammers fake their phone number to try to trick you. ExchangeBlocker stops this trick in its tracks by blocking ALL numbers in your exchange (except for your contacts).

For example, if your phone number is 408-555-1234, ExchangeBlocker will block all calls from 408-555-xxxx, except those in your contacts. It's amazing how many calls get blocked this way.

It does this without requiring a subscription. It doesn't upload your contacts anywhere. It's safe and easy to use.

ExchangeBlocker only works for phone numbers in the US and Canada.

It works with other call blockers, so you can add its protection to anything you already have!

What’s New

Version 1.0.2

Fixed bugs with call blocking and feedback. Improved performance.

Ratings and Reviews

3.9 out of 5
37 Ratings

37 Ratings

Kplan23 ,

Works intermittently

The best part of this app is the developer is extremely responsive in getting back to me when the app fails to work.
The app works intermittently. When it works it does exactly what it say it will do. Unfortunately when it’s not working, I go to Settings, Phone, Call Blocking & Identification and find the switch has once again been changed from ON to OFF. I can’t explain why this happens. I turn it back ON. When I go to the Phone app and look at the number that wasn’t blocked, it now shows Blocked with a red dot an Spam Call.
A few weeks ago when I went to check the switch the app wasn’t listed. Two other blocking apps that I hadn’t set up yet were also gone. I checked back the next day and all 3 were listed. The switch for ExchangeBlocker was OFF again. Again I have no explanation for this strange behavior other than Apple has a problem that effects all call blocking apps since I’ve seen the same problems in reviews of other call blocking apps.
When I find ExchangeBlocker has been turned OFF on my iPhone I check my spouse’s iPhone and is on. Both are iPhone 8 running the same iOS. Weird.

Steve's Wife for Life ,

No more calls! :0)

I have 2 call blockers because my sick stalker likes to spoof numbers in order to harass me even WITH a restraining order. The first one blocks spam and other illegal calls, plus my personal exchange. I use this one to block whole exchanges she is using to bypass the other blocker. I haven’t had a call in DAYS for the first time in 9 whole YEARS. Thank you so much for protecting my family in a way the law won’t because they value my proven hacker/stalker’s privacy over mine.

Maniac0 ,

Best App hidden within the AppStore!

I have one other call blocker but it could not block the exchange I am on. Just so happens,I have one pesky caller doing just that. Rotating various numbers on my exchange. This app blocks all numbers on my exchange beautifully with zero problems. If a number is in my contacts it is allowed. Also, the developer ask for nothing! Ever heard the saying that the perfect solution to a problem is usually so simple that it’s beautifull. Here it is.


Gentlemen Coders, LLC
1.7 MB

Requires iOS 11.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2018 Gentlemen Coders, LLC. All rights reserved.


  • Family Sharing

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

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