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Best Block Calls Unknown Apps

203+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated May 2026

From beginner-friendly picks to power-user tools, our block calls unknown list covers 203+ iPhone apps updated through May 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Block Calls Unknown

TrapCall: Reveal No Caller ID#1

TrapCall: Reveal No Caller ID by Mosaic S.r.l.

Control Who Calls You & Block
Editor's Choice
💼 Business
4.2😞(25K ratings)
FreeAdsIn-App Purchases
#27in Business
TrapCall: Reveal No Caller ID screenshot 1
TrapCall: Reveal No Caller ID screenshot 2
TrapCall: Reveal No Caller ID screenshot 3
TrapCall: Reveal No Caller ID screenshot 4
TrapCall: Reveal No Caller ID screenshot 5
TrapCall: Reveal No Caller ID screenshot 6

Unmask blocked and unknown callers, stop spam, and protect your privacy. Get caller ID for masked numbers, record calls, and receive voicemails as text. This app provides a solution for unwanted and harassing calls.

What We Love

  • 🔒 Effective in unmasking blocked numbers
  • 🚀 Able to record and transcribe calls
  • 👍 Helpful in gathering evidence for legal issues

Room to Improve

  • 🐛 Inaccurate caller ID information
  • 🔒 Difficult to fully deactivate and remove from device
  • 🔋 Continued call forwarding even after cancellation
Call Blocker#2

Call Blocker by DEEPDY LTD

Identify & Block spam calls
Strong Contender
🔧 Utilities
4.5😐(1.2K ratings)
FreeAdsIn-App Purchases
Call Blocker screenshot 1
Call Blocker screenshot 2
Call Blocker screenshot 3
Call Blocker screenshot 4
Call Blocker screenshot 5
Call Blocker screenshot 6

Block unwanted calls, identify suspicious numbers, and report spam. Access a large community database to avoid phone scams and extra charges. Protect yourself from telemarketers and unknown callers.

What We Love

  • 🚀 Effective call blocker
  • 👍 Easy to use
  • 🔒 Blocks spam and scam calls
  • 💡 Useful caller ID and lookup features

Room to Improve

  • 🐛 Inconsistent performance, some calls still get through
  • 🔍 Incomplete database of known scammers
  • 💰 Paid version required for full functionality
SpamSafe: Spam Call Blocker#3

SpamSafe: Spam Call Blocker by PLEKMIN TRADE SL

Lookup & Block Unknown Numbers
Worth Considering
🔧 Utilities
4.5😞(4.6K ratings)
FreeAdsIn-App Purchases
SpamSafe: Spam Call Blocker screenshot 1
SpamSafe: Spam Call Blocker screenshot 2
SpamSafe: Spam Call Blocker screenshot 3
SpamSafe: Spam Call Blocker screenshot 4
SpamSafe: Spam Call Blocker screenshot 5

Block unwanted calls and messages with advanced caller ID, filtering, and a customizable blacklist. Protect yourself from spam, robocalls, and scams with real-time detection and defense.

What We Love

  • 🚀 No more spam calls

Room to Improve

  • 💸 Paid service but not free as advertised
  • 🔍 Ineffective at blocking spam
  • 🤬 Deceptive marketing tactics

More Block Calls Unknown apps to explore

4
Call ID - Call Blocker
Call ID - Call Blocker
Call ID - Call Blocker
Verified Caller, Block Spamers
Free

Identify unknown callers in real-time and block unwanted numbers before they ring. This app uses a local database of known spam numbers and community reports to protect you from robocalls, telemarketers, and scams. Enjoy uninterrupted calls and enhanced privacy.

Live Caller ID for unknown numbersBlock robocalls, telemarketers, and scamsLocal database of 14,000+ spam numbers
🔧 Utilities
(8K)
free with in-app purchases
5
Hiya: Spam Blocker
Hiya: Spam Blocker
Hiya: Spam Blocker
Personal Call Screener
Free

Block unwanted spam and scam calls while identifying unknown callers. Get real-time caller ID and call reasons before you answer, and protect your voicemail from spam. Offers premium features for an enhanced calling experience.

Spam and scam call blockingReal-time caller IDCall reason identification
🔧 Utilities
(237K)
free with in-app purchases
6
Robokiller: Spam Call Blocker
Robokiller: Spam Call Blocker
Robokiller: Spam Call Blocker
Stop 99% of Robocalls & Texts
Free

This app blocks up to 99% of unwanted spam calls and texts using advanced AI and a vast database. It also offers a unique feature to annoy spammers with automated responses and protects your personal information from being sold online.

Blocks 99% of spam calls and textsAI-powered audio fingerprintingAnswer Bots for robocaller revenge
🔧 Utilities
(413K)
free with in-app purchases
7
Mr. Number Lookup & Call Block
Mr. Number Lookup & Call Block
Mr. Number Lookup & Call Block
Identify callers quickly
Free

Instantly identify unknown callers and block unwanted calls. This app provides lightning-fast phone number lookups, protects against scam calls, and offers advanced spam detection to keep your device free from robocalls. Manage your personal block list and report spam to help the community.

Identify unknown callersBlock specific phone numbersSpam detection and blocking
🔧 Utilities
(99K)
free with in-app purchases
8
Textkiller - Spam Text Blocker
Textkiller - Spam Text Blocker
Textkiller - Spam Text Blocker
Block Unwanted Messages
Free

This app automatically blocks unwanted spam text messages, protecting you from scams and telemarketing. It offers customizable filtering options, a constantly updated global block list, and a privacy-first approach to keep your inbox clean and your personal information secure.

Automatic spam text eliminationGlobal block list updated constantlyPredictive SMS blocking algorithm
🔧 Utilities
(13K)
free with in-app purchases
9
TraceID: Unmask & Block Calls
TraceID: Unmask & Block Calls
TraceID: Unmask & Block Calls
Reveal Unknown Phone Numbers
Free

This app acts as a shield against unwanted calls and texts, using AI and a global spam radar to identify and block scams. It can reveal the true number behind blocked or anonymous calls, helping you report harassment and regain control of your phone.

Real-time spam call protectionSpam text filteringReveal hidden callers
💼 Business
(3)
free with in-app purchases
10
Robo Shield: AI Spam Filter
Robo Shield: AI Spam Filter
Robo Shield: AI Spam Filter
Block Unknown Caller ID Scams
Free

This app uses artificial intelligence to screen incoming calls, distinguishing legitimate calls from spam, robo callers, and scams. It acts as a personal call assistant, identifying unknown callers and providing detailed information about each call.

AI-powered call screeningIdentifies spam, unverified, and verified callsAdvanced Caller ID with call categorization
🔧 Utilities
(54)
subscription
11
Call Control: #1 Call Blocker
Call Control: #1 Call Blocker
Call Control: #1 Call Blocker
Block Spam Calls & Robo Calls
Free

This app automatically blocks unwanted calls from spammers, telemarketers, and robocallers using smart technology. It allows users to create personal blocklists and offers a free reverse lookup feature. Protect your phone from scams and unwanted interruptions.

Smart blocking technologyAutomatic spam call blockingPersonal blocklist
🔧 Utilities
(6.4K)
free with in-app purchases
12
Spam Call Blocker - Protect
Spam Call Blocker - Protect
Spam Call Blocker - Protect
Block Unknown Callers－Contacts
Free

This app helps you block unwanted calls from scammers, spammers, telemarketers, and unknown numbers. It uses an advanced algorithm and user reports to identify and block spam, giving you control over who can contact you.

Block spam callsBlock telemarketersBlock unknown callers
🔧 Utilities
(1.9K)
subscription
13
CallApp - Caller ID & Block
CallApp - Caller ID & Block
CallApp - Caller ID & Block
Unknown calls & spam calls
Free

Identify unknown callers and block unwanted spam calls with this comprehensive caller ID and call blocker app. It also features a smart dialer, SMS protection, and call reminders to manage your communications effectively.

Advanced Caller IDSpam and Fraud Call BlockingSmart Dialer
🔧 Utilities
(403)
free with in-app purchases
14
Phone ID: Spam Call Block App
Phone ID: Spam Call Block App
Phone ID: Spam Call Block App
Unknown Number & Text Blocker
Free

This app blocks unwanted calls and texts using AI and a global spam radar. It aims to eliminate up to 95% of spam calls and messages, offering up-to-date protection against known scams and new spammers. A premium subscription unlocks a full database for enhanced security.

AI audio fingerprinting for call analysisGlobal spam radar listSMS blocking algorithm
📊 Productivity
(99)
free with in-app purchases
15
Caller App : Caller ID & Block
Caller App : Caller ID & Block
Caller App : Caller ID & Block
Identify unknown calls & spam
Free

Identify unknown callers and block unwanted spam calls. This app functions as a caller ID, dialer, and SMS manager, helping you screen calls and texts. It also offers call reminders and a phone number search feature.

Full Screen Caller IDT9 DialerSMS & Messaging
🔧 Utilities
(267)
free with in-app purchases
16
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Spam Blocker・Phone Call Filter
Free

Identify unknown callers and block spam calls and texts. This app uses AI and community data to screen calls, identify callers, and offers an AI assistant for call screening. Premium features include ad removal, unlimited lookups, and profile insights.

Identify unknown callersBlock spam calls and SMSAI-powered call screening
🔧 Utilities
(251K)
free with in-app purchases
17
Getcontact
Getcontact
Getcontact
Caller ID & Spam Blocker
Free

This app helps you identify unknown callers and block unwanted spam calls and messages. It filters your communications, allowing you to focus on genuine conversations and maintain privacy with secure, encrypted chat features.

Caller identification for unknown numbersSpam call and message blockingSMS inbox cleanup
🔧 Utilities
(59K)
free with in-app purchases
18
True CallerID: Spam Blocker
True CallerID: Spam Blocker
True CallerID: Spam Blocker
Identify unknown calls & spam
Free

Identify unknown callers and block unwanted calls automatically. This app uses smart spam detection and AI to protect you from robocalls, telemarketers, and scams. Take control of your phone and see caller information before you answer.

Instant Caller IDSmart Call BlockerSpam Detection Alerts
🔧 Utilities
(217)
free with in-app purchases
19
Nomorobo - Robocall Blocker
Nomorobo - Robocall Blocker
Nomorobo - Robocall Blocker
Call Filter & Scam Shield
Free

This app blocks unwanted robocalls, telemarketers, spam texts, and scammers from reaching your phone. It identifies and filters out millions of malicious callers daily, while allowing important alerts to get through. Enjoy peace of mind with real-time protection and customizable blocking options.

Real-time robocall blockingIdentifies new robocallers dailyAllows important alerts
🔧 Utilities
(21K)
free with in-app purchases
20
Caller ID - Spam Call Blocker
Caller ID - Spam Call Blocker
Caller ID - Spam Call Blocker
Identify unknown calls & spam
Free

Instantly identify unknown callers and block unwanted spam calls with advanced real-time identification and community-powered protection. Take control of your calls and enjoy a safer communication experience.

Real-time caller identificationAutomatic spam call blockingCommunity-powered protection
💼 Business
(127)
free with in-app purchases

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