Best Screen Unknown Callers Apps

186+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated May 2026

The best screen unknown callers apps on iPhone average 4.4β˜… across 186+ titles β€” we've ranked them by what real users actually keep on their phones. Updated May 2026.

Top Picks for Screen Unknown Callers

Show Caller Name & Block Spam#1

Show Caller Name & Block Spam by TRUE DIALER - CALLER ID & SPAM PROTECTION

Know whos calling Scam blocker
Editor's Choice
πŸ”§ Utilities
3.7😞(135 ratings)
FreeAdsIn-App Purchases
Show Caller Name & Block Spam screenshot 1
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Show Caller Name & Block Spam screenshot 3
Show Caller Name & Block Spam screenshot 4
Show Caller Name & Block Spam screenshot 5
Show Caller Name & Block Spam screenshot 6

Identify unknown callers and block spam calls with real-time caller ID. Search any number to find the caller's name, identity, and even photos. This app also offers smart contact management and offline functionality.

What We Love

  • πŸš€ Easy to use
  • πŸ‘ Convenient way to get a phone number
  • πŸš€ Reliable and works well
  • πŸš€ Excellent caller ID functionality

Room to Improve

  • πŸ› Paid version still shows ads
  • πŸ› Caller ID information not always accurate
  • πŸ› Inability to delete contacts
Truecaller: Premium Caller ID#2

Truecaller: Premium Caller ID by True Software Scandinavia AB

Spam Blocker・Phone Call Filter
Strong Contender
πŸ”§ Utilities
4.4😞(251K ratings)
FreeAdsIn-App Purchases
#40in Utilities
Truecaller: Premium Caller ID screenshot 1
Truecaller: Premium Caller ID screenshot 2
Truecaller: Premium Caller ID screenshot 3
Truecaller: Premium Caller ID screenshot 4
Truecaller: Premium Caller ID screenshot 5
Truecaller: Premium Caller ID screenshot 6

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.

What We Love

  • πŸš€ Blocks spam calls
  • πŸ’‘ Useful caller ID feature
  • πŸ‘ Helps identify scammers

Room to Improve

  • πŸ› Inconsistent performance
  • πŸ”’ Privacy concerns with data collection
  • πŸ’° Expensive premium subscription
TrapCall: Reveal No Caller ID#3

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

Control Who Calls You & Block
Worth Considering
πŸ’Ό Business
4.2😞(25K ratings)
FreeAdsIn-App Purchases
#29in Business
TrapCall: Reveal No Caller ID screenshot 1
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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

  • πŸ”’ Effective in unmasking blocked numbers
  • πŸš€ Able to record and transcribe calls
  • πŸ‘ Helpful in gathering evidence for legal issues

Room to Improve

  • πŸ› Inaccurate caller ID information
  • πŸ”’ Difficult to fully deactivate and remove from device
  • πŸ”‹ Continued call forwarding even after cancellation

More Screen Unknown Callers apps to explore

4
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
πŸ”§ Utilities
(413K)
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
πŸ”§ Utilities
(237K)
free with in-app purchases
6
T-Mobile Scam Shield
T-Mobile Scam Shield
T-Mobile Scam Shield
Your call control center.
Free

This app provides advanced call management features to protect you from unwanted scam and robo calls. It uses AI and machine learning to identify and block suspicious numbers, offers full caller ID, and allows you to report fraudulent calls.

Scam BlockScam ReportingCaller ID
πŸ”§ Utilities
(208K)
free
7
Google Voice
Google Voice
Google Voice
Smarter voice calling
Free

This app provides a dedicated phone number for calls, texts, and voicemail, syncing across devices for seamless use anywhere. It offers advanced spam filtering, call forwarding, and searchable message history. Voicemails are transcribed for easy reading and can be sent to your email.

Dedicated phone numberCall, text, and voicemailCross-device syncing
πŸ“Š Productivity
(62K)
free
8
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
πŸ”§ Utilities
(59K)
free with in-app purchases
9
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
πŸ”§ Utilities
(99K)
free with in-app purchases
10
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
πŸ”§ Utilities
(8K)
free with in-app purchases
11
ViewCaller: Caller ID
ViewCaller: Caller ID
ViewCaller: Caller ID
Identify unknown calls & spam
Free

Identify unknown callers and block unwanted spam calls with real-time detection. Access a global database to screen calls and manage your communication for enhanced privacy and security.

Real-time spam detectionGlobal community insightCustomizable blocking
πŸ”§ Utilities
(729)
free with in-app purchases
12
CallerSmart: Reverse Lookup
CallerSmart: Reverse Lookup
CallerSmart: Reverse Lookup
Caller ID & Spam Call Blocker
Free

Identify unknown callers and block unwanted spam texts and calls. Get detailed caller information before answering and protect your privacy by adding your number to the Do Not Call Registry. Manage your calls effectively with this easy-to-use tool.

Reverse phone lookupCaller ID for incoming callsSMS filter
πŸ”§ Utilities
(15K)
free with in-app purchases
13
Number Finder Caller ID :True
Number Finder Caller ID :True
Number Finder Caller ID :True
Spam and Lookup Protection
Free

Identify unknown callers and protect your privacy with this comprehensive reverse phone lookup tool. See who searched for your number, block spam, and manage your digital footprint. Stay safe and informed about who contacts you.

Unlimited reverse phone lookupsReal-time caller ID identificationComprehensive spam detection
πŸ”§ Utilities
(70K)
free with in-app purchases
14
Reveal No Caller ID – MaskOff
Reveal No Caller ID – MaskOff
Reveal No Caller ID – MaskOff
Unmask & trap a blocked call
Free

Identify and record unknown or blocked callers. This app provides instant proof of who is calling, allowing you to gather evidence against harassers and stop unwanted calls. It offers a secure record of all communications.

Reveal hidden caller IDsRecord callsCollect evidence against harassers
πŸ’Ό Business
(523)
free with in-app purchases
15
Show Caller ID & Spam Blocker
Show Caller ID & Spam Blocker
Show Caller ID & Spam Blocker
Always Know who's calling
Free

Identify unknown callers and block spam with a vast database of phone numbers. Get contact photos and use a smart dialer for quick access. Take control of your calls and contacts.

Caller ID Name identificationSpam identifierReverse phone number lookup
πŸ”§ Utilities
(306)
free with in-app purchases
16
CallApp
CallApp
CallApp
Caller ID & Spam Call Blocker
Free

Identify unknown callers and block unwanted calls with an advanced caller ID. Access a global database of billions of numbers to know who is calling before you answer. Protect your privacy and security with this powerful call management tool.

Advanced caller IDIdentify unknown numbersBlock spam calls
πŸ”§ Utilities
(354)
free with in-app purchases
17
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
Robo call blocker scam shield
Free

Automatically identify and filter out unwanted calls, robocalls, and telemarketers using advanced AI. Protect yourself from scams and unknown numbers with customizable blocklists and smart alerts. Enjoy an ad-free experience and advanced features with a premium subscription.

AI-powered spam call blockingFraud SMS detectionCustom blocklist and whitelist
πŸ”§ Utilities
(25K)
freemium
18
SpoofCard - Privacy Protected
SpoofCard - Privacy Protected
SpoofCard - Privacy Protected
Second Number For Calls & Text
Free

This app provides a temporary second phone number for private calls and texts without a contract or SIM card. It offers features like Wi-Fi calling, call recording, and the ability to send calls directly to voicemail, all within an ad-free experience.

Instant second numberWi-Fi callingPrivate texting
🌐 Social Networking
(36K)
free with in-app purchases
19
Real Caller : Caller id
Real Caller : Caller id
Real Caller : Caller id
Number Lookup - Phone Numbers
Free

This app allows users to create profiles, search for others, and block unwanted calls. It also offers instant messaging between users and allows you to add multiple names to your verified phone number for easier identification. Premium features are available through subscription.

Create and manage user profilesSearch for other users' profilesBlock unwanted phone calls
πŸ”§ Utilities
(3.3K)
freemium
20
Caller-ID
Caller-ID
Caller-ID
Reverse Phone Lookup
Free

Identify unknown callers and find out who owns a phone number. This app offers a global reverse lookup for over 1 billion numbers, with features like geolocation and social media directory integration. It also allows users to report and comment on spam or prank callers.

Global reverse phone lookupGeolocation by area codeSocial media directory
πŸ” Reference
(19K)
free with in-app purchases