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Callblock: Adblock for unwanted calls

By Rocketship Apps

This app is only available on the App Store for iOS devices.


Callblock is the first app that lets you stop telemarketing phone calls in iOS (, with the world’s biggest directory of telemarketers – now over 3,000,000 classified entries from over 100 countries!

The app is able to identify 86.7 percent of telemarketing calls correctly with only 1.7 percent false positives on average.

Note: Callblock *cannot* block calls with no caller ID – this is an iOS limitation, but most telemarketers don’t block their caller IDs. The app is free to try for one month then will renew automatically using your Apple account for $1.99 monthly or $19.99 yearly afterwards – you can cancel anytime by going to your account settings in iOS or iTunes. See Callblock’s terms of use at and privacy policy at

You love your iPhone – except sometimes the phone part and, in particular, the telemarketers often on the other end of the line. Telemarketers make 148 million annoying, time-wasting calls per day according to consumer group Private Citizen and do-not-call lists (where available) do not work (and weren’t even meant to for many types of telemarketers) according to governments themselves. Callblock helps prevent these calls.

The app blocks unwanted telephone calls not iMessage, SMS, or MMS messages. To allow Callblock to block calls:

1. press the Home button on your iPhone,
2. tap the “Settings” app,
3. tap “Phone” > (under “Calls”) “Call Blocking & Identification”, then
4. toggle the “Callblock” switch on.

To unblock calls, navigate to the “Callblock” app. To add or remove a missing or misclassified caller, tap the “Add caller” button.

Enabling Callblock or making changes in the app may take up to a minute to take effect.

If you have questions or comments, follow and message us:



Callblock was created and is maintained by Rocketship, an award-winning app studio whose mission is to design and develop the finest mobile and web experiences.

What's New in Version 1.5.0

Updated telemarketer directory.

iPhone Screenshots

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Customer Reviews

Call blocker... simple but stellar!

The simplicity of the app is its greatest feature. The app gives you step by step instructions on how to set up the call blocking feature through iOS and allows you to add numbers to block once in the app. I get so many calls from fraud rings in Michigan that call and say you've won something and in turn grab your information and steal your identity. With this app I have been able to easily block the numbers so I don't have to keep denying the call. It's also nice to note that the app itself blocks over 3 million numbers from known tele-marketers around the world. There is a nominal fee associated with the app after the free trial but it's very affordable and acts like a monthly payment through the App Store like my Apple Music and Netflix account fees. There are no ads ( thank god! I hate apps with ads) and no surprise charges after the monthly or annual fee is paid. I'd recommend this to anyone who receives tele-marketing or annoying phone calls from unwanted callers.

Absolutely AMAZING App

Have you ever got constant calls from IRS scammers? Or just scammers in general and random people you don't know? Well no more! This app is amazing! Simply just block them and never hear from them again! I know from experience I used to have soo many random numbers calling me and I got so fed up. Now I don't have to worry and trust me guys it's great! Also Callblock blocks all junk calls with a directory of 3,000,000+ telemarketers in a whopping 100+ countries! I would recommend this app 10/10 for anyone who gets junk calls constantly! Also the first month is free soooo go try it out!!

Functional and beautiful!

Finally, dinner time calls about "winning" trips and collecting debt I don't have have ended! This app makes blocking incredibly easy, and at a low price. Plus, it's a beautifully simple app. Only one attractive screen to control refreshing and controlling block lists, plus the ability to add custom numbers! It's really incredible how much one can appreciate the absence of unwanted calls.

Callblock: Adblock for unwanted calls
View in iTunes
  • Free
  • Category: Productivity
  • Updated:
  • Version: 1.5.0
  • Size: 104 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch.

Customer Ratings

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Top In-App Purchases

  1. Monthly subscription$1.99
  2. Yearly subscription$19.99