Best Unknown Caller Identifier Apps

194+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated July 2026

Looking for free unknown caller identifier apps? 20 of our 194+ tracked titles are free to download β€” no subscription, no trial. The rest are premium picks worth paying for.

Compare top Unknown Caller Identifier Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Truecaller: Premium Caller IDTruecaller: Premium Caller IDFree4.4β˜… (251K)YesYesJul 2026
2Easy Caller IDEasy Caller IDFree4.3β˜… (2.7K)NoNoJul 2026
3ViewCaller: Caller IDViewCaller: Caller IDFree4.1β˜… (755)NoYesJul 2026
4GetcontactGetcontactFree4.4β˜… (59K)YesYesJul 2026
5NumberBox:CallerIDNumberBox:CallerIDFree4.5β˜… (465)NoNoJul 2026
6True CallerID: Spam BlockerTrue CallerID: Spam BlockerFree4.3β˜… (217)YesYesJul 2026
7CallApp: Caller ID & BlockCallApp: Caller ID & BlockFree4.5β˜… (510)YesYesJul 2026
8Number Finder Caller ID :TrueNumber Finder Caller ID :TrueFree4.7β˜… (70K)YesYesJul 2026

Top Picks for Unknown Caller Identifier

Truecaller: Premium Caller ID#1

Truecaller: Premium Caller ID by True Software Scandinavia AB

Spam Blocker・Phone Call Filter
Editor's Choice
πŸ”§ Utilities
4.4😞(251K ratings)
FreeAdsIn-App Purchases
#44in 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
Easy Caller ID#2

Easy Caller ID by L.S Mobile Apps Holdings LTD

Smart Address Book
Strong Contender
πŸ“Š Productivity
4.3😐(2.7K ratings)
Free
Easy Caller ID screenshot 1
Easy Caller ID screenshot 2
Easy Caller ID screenshot 3
Easy Caller ID screenshot 4

Identify unknown callers and block spam calls with real-time information displayed on your native call screen. Instantly look up any phone number to find caller details and enrich your address book. Your privacy is protected, and all features are completely free.

What We Love

  • πŸ‘ Easy to use
  • πŸš€ Simple and efficient
  • πŸ’‘ Helpful for managing groups
  • πŸ‘ Intuitive contact management

Room to Improve

  • πŸ› Crashes and freezes
  • πŸ› Unreliable sync and backup
  • πŸ’° Expensive subscription model
ViewCaller: Caller ID#3

ViewCaller: Caller ID by SMART MEDIA INTERNET MARKETING LTD

Block spam & check call risk
Worth Considering
πŸ”§ Utilities
4.1😞(755 ratings)
FreeIn-App Purchases
ViewCaller: Caller ID screenshot 1
ViewCaller: Caller ID screenshot 2
ViewCaller: Caller ID screenshot 3
ViewCaller: Caller ID screenshot 4
ViewCaller: Caller ID screenshot 5

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.

Room to Improve

  • ❌ Does not work
  • ❌ Inaccurate results
  • ❌ Useless functionality

More Unknown Caller Identifier apps to explore

4
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
5
NumberBox:CallerID
NumberBox:CallerID
NumberBox:CallerID
Know Your Caller
Free

This app helps you identify unwanted calls by allowing users to report and tag spam or telemarketing numbers. All submissions are anonymous and help build a community-driven database to protect users from potential scams.

Voluntarily report unwanted numbersManually add tags to phone numbersIdentify spam and telemarketing calls
πŸ”§ Utilities
(465)
free
6
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
πŸ”§ Utilities
(217)
free with in-app purchases
7
CallApp: Caller ID & Block
CallApp: Caller ID & Block
CallApp: Caller ID & Block
Stop Spam & Know Who's Calling
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
(510)
free with in-app purchases
8
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
9
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
10
Infgety: CallerID & NumberBook
Infgety: CallerID & NumberBook
Infgety: CallerID & NumberBook
Identify unknown callers fast
Free

Identify unknown callers instantly and protect yourself from spam and scams. This app provides detailed profiles for phone numbers, allowing you to see who is calling and how others have saved their number. Enhance your call security and connect with confidence.

Identify unknown callersSearch by number or nameSpam and scam protection
πŸ”§ Utilities
(277)
free with in-app purchases
11
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
12
TrapCall: Reveal No Caller ID
TrapCall: Reveal No Caller ID
TrapCall: Reveal No Caller ID
Control Who Calls You & Block
Free

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.

Reveal masked caller IDsBlock spam and telemarketersRecord incoming calls
πŸ’Ό Business
(25K)
free with in-app purchases
13
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
πŸ”§ Utilities
(267)
free with in-app purchases
14
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
πŸ’Ό Business
(127)
free with in-app purchases
15
Show Caller ID & Number Search
Show Caller ID & Number Search
Show Caller ID & Number Search
Spam Call Blocker・Phone Lookup
Free

Identify unknown callers and block unwanted spam calls with this app. It provides real-time caller ID, a global spam database, and allows you to search for caller details. Take control of your phone calls and stay protected from scams.

Caller ID LookupSpam Call BlockerFind Name & Location
πŸ”§ Utilities
(196)
free with in-app purchases
16
Call Blocker
Call Blocker
Call Blocker
Identify & Block spam calls
Free

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.

Block any phone numberIdentify commercial callsReport suspicious numbers
πŸ”§ Utilities
(1.2K)
free with in-app purchases
17
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
18
Who: Premium True Caller ID
Who: Premium True Caller ID
Who: Premium True Caller ID
Spam Blocker β€’ Phone Lookup
Free

Identify unknown callers, block unwanted calls and texts, and look up phone numbers instantly. This app uses AI to screen calls and provides detailed caller information, keeping your phone secure and quiet.

Identify unknown callersBlock spam calls and textsLookup unknown phone numbers
πŸ”§ Utilities
(615)
free with in-app purchases
19
Reverse Lookup
Reverse Lookup
Reverse Lookup
Phone number lookup pro.
Free

Identify unknown callers and uncover details about any phone number. This free tool helps you check for spam and find information on cell, landline, and toll-free numbers from the US and Canada.

Find information on phone numbersCheck spam likelinessCopy/paste numbers from call log
πŸ” Reference
(146K)
ad-supported
20
True Caller - Number Tracker
True Caller - Number Tracker
True Caller - Number Tracker
Identify Any Unknown Caller
Free
🌐 Social Networking
(0)

FAQ about Unknown Caller Identifier

What are the best unknown caller identifier apps for iPhone?
Truecaller: Premium Caller ID tops our unknown caller identifier apps ranking as of July 2026, with a 4.4-star average from 251K App Store ratings, and it's free to download.
Yes β€” 20 of the top unknown caller identifier apps we rank are free to download, including Truecaller: Premium Caller ID and Easy Caller ID.
Truecaller: Premium Caller ID shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 194+ unknown caller identifier apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Truecaller helps you identify unknown callers and block spam calls or SMS. It uses AI pattern analytics and community-based spam classifications to ensure the safety and security of your communication. You can also search for unknown numbers directly within the app.
Key features include automatic identification of spam, fraud, and robocalls before you pick up, the ability to view and search previously identified calls, and a powerful spam call blocker. The Truecaller Assistant offers AI-powered call screening to identify callers and their reasons for calling.