Comparison

Callblock vs CyberFox Guard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Callblock

This app helps you block unwanted telemarketing calls on your iPhone. It uses a large, constantly updated directory to identify and filter out spam calls, offering a high accuracy rate. While it cannot block calls with no caller ID, it significantly reduces interruptions from telemarketers.

Highlights
  • Blocks telemarketing calls
  • Large directory of telemarketers
  • High identification accuracy
  • Customizable caller list
  • iOS call blocking integration
Features
Read full description

Callblock is the first app that lets you stop telemarketing phone calls in iOS (https://techcrunch.com/2016/09/07/callblocks-new-ios-app-will-block-calls-from-over-2-million-telemarketers/), with the world’s biggest directory of telemarketers – now over 3,000,000 classified entries from over 100 countries! The app identifies 86.7 percent of telemarketing calls correctly with a false-positive rate of only 1.7 percent 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 https://callblockapp.com/terms and privacy policy at https://www.iubenda.com/privacy-policy/7907565. 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 enable Callblock to block calls: 1. tap the “Settings” app, 2. tap “Phone” > “Call Blocking & Identification”, then 3. toggle the “Callblock” switch on. To unblock calls, go to the “Callblock” app. To add, remove, or reclassify a missing or misclassified caller, tap the “Add caller” button. Enabling Callblock or making changes in the app may require up to a minute to take effect. If you have questions or comments, follow and message us: • https://www.facebook.com/callblockapp • https://www.instagram.com/callblockapp/ • https://twitter.com/callblockapp ••• 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.

About

CyberFox Guard

Features
Read full description

All-in-one Corporate Secure Access Solution. Cyberfox Guard is a suite of applications and extensions dedicated to make your company accounts access more secure.

Screenshots

Callblock4 screens
CyberFox Guard4 screens

Verdict

The call

The clearest difference is in-app purchases: CyberFox Guard at none against Callblock's 2. Callblock's advantage is update cadence (every 2 months vs every 16 months) and iOS requirement (10.0 vs 16.4). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Callblock sells 2 in-app purchases, starting at $1.99 per month. CyberFox Guard asks for nothing beyond the download.

UpkeepUpdate frequency

Callblock ships an update every 2 months, CyberFox Guard every 16 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Callblock versus CyberFox Guard: the parameters behind the verdict, then further details
ParameterCallblockCyberFox Guard
PriceFreeFree
Rating3.3 (51 ratings) — better—
Positive reviews53.9% of reviews—
Number of ratings51 — better—
Update frequencyEvery 2 months — betterEvery 16 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better16.4
Further details — not scored
Size107 MB39 MB
Age rating4+17+
DeveloperRocketship AppsFOX SOLUTION, SRL

Bugs and requests

Callblock

Reported bugs

6 issues
  • Does not work on iOS 14
  • App won't stop loading
  • Bug prevents unblocking calls
  • Error enabling extension
  • Does not work with passcode protection
Show 1 more
  • Lost subscription status after upgrade

Requested features

5 requests
  • Ability to see blocked calls log
  • Option to provide updates to categories
  • Improved blocking for local number spoofing
  • Clearer indication of active blocking
  • Dark mode option

CyberFox Guard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Callblock

Subscriptions2
  • Monthly1 Month trial$1.991 Month
  • Yearly1 Month trial$19.991 Year
None

CyberFox Guard

No in-app purchases

Questions

Is Callblock free?
Callblock is free to download, with in-app purchases available.
Is CyberFox Guard free?
CyberFox Guard is free to download, with no in-app purchases.
Do Callblock or CyberFox Guard have ads?
Neither Callblock nor CyberFox Guard shows ads.
Which is updated more often, Callblock or CyberFox Guard?
Callblock ships an update every 2 months, and CyberFox Guard every 16 months. Most recently, Callblock was updated on October 13, 2026 and CyberFox Guard on October 7, 2026.

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