Best Unknown Caller Identifier Apps

197+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated June 2026

Looking for free unknown caller identifier apps? 20 of our 197+ tracked titles are free to download β€” no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Unknown Caller Identifier

ViewCaller: Caller ID#1

ViewCaller: Caller ID by SMART MEDIA INTERNET MARKETING LTD

Identify unknown calls & spam
Editor's Choice
πŸ”§ Utilities
4.1😞(729 ratings)
FreeAdsIn-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
ViewCaller: Caller ID screenshot 6

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
True CallerID: Spam Blocker#2

True CallerID: Spam Blocker by Reena Williams

Identify unknown calls & spam
Strong Contender
πŸ”§ Utilities
4.3(184 ratings)
FreeAdsIn-App Purchases
True CallerID: Spam Blocker screenshot 1
True CallerID: Spam Blocker screenshot 2
True CallerID: Spam Blocker screenshot 3
True CallerID: Spam Blocker screenshot 4
True CallerID: Spam Blocker screenshot 5
True CallerID: Spam Blocker screenshot 6

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.

Getcontact#3

Getcontact by GETVERIFY LDA

Caller ID & Spam Blocker
Worth Considering
πŸ”§ Utilities
4.4😞(59K ratings)
FreeAdsIn-App Purchases
Getcontact screenshot 1
Getcontact screenshot 2
Getcontact screenshot 3
Getcontact screenshot 4
Getcontact screenshot 5

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.

What We Love

  • πŸŽ‰ Useful for blocking scam calls
  • πŸ‘ Easy to use and navigate
  • πŸš€ Effective at identifying and blocking spam calls

Room to Improve

  • πŸ”’ Privacy concerns, app accesses contacts
  • πŸ› Bugs and glitches, app not working as expected
  • πŸ”’ Concerns about personal information being shared

More Unknown Caller Identifier apps to explore

4
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
5
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
6
CallerID: True Number Search
CallerID: True Number Search
CallerID: True Number Search
Identify unknown calls & spam
Free

Instantly identify unknown callers and block spam, scams, and robocalls. This app offers reverse number lookup, SMS spam protection, and customizable blacklists for enhanced phone security and privacy.

Real CallerID and name lookupReverse phone number searchSpam call blocking
πŸ”§ Utilities
(120)
free with in-app purchases
7
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
8
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
(377)
free
9
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
10
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
11
Caller ID :True Name Caller ID
Caller ID :True Name Caller ID
Caller ID :True Name Caller ID
Identify Calls Name & Photo
Free

Identify unknown callers with true names and regions. Block spam, telemarketing, and unwanted calls. Manage calls with a smart dialer and search any number. Backup and restore contacts easily.

Instant Caller IDCall BlockerSmart Phone Dialer
🌐 Social Networking
(995)
free with in-app purchases
12
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
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
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
15
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
16
Find Caller - Reverse Lookup
Find Caller - Reverse Lookup
Find Caller - Reverse Lookup
Caller id reverse phone lookup
Free

Identify the risk level of unknown phone numbers from around the world. Avoid spam and fraudulent calls by looking up true names and locations. Protect yourself from scams with real-time updated risk information.

Identify unknown call risk levelLookup true name and locationSearch phone number database
πŸ”§ Utilities
(705)
free with in-app purchases
17
Find Call - Identify Caller ID
Find Call - Identify Caller ID
Find Call - Identify Caller ID
Reverse Phone Lookup:Trap Call
Free

Identify unknown callers and block scam calls with a vast database of reported numbers. Get details on caller name, location, and fraud risk. Anonymous searches are supported, and no registration is needed for basic use.

Identify unknown phone numbersAvoid scam and fraudulent callsGlobal database of 60 million spam calls
πŸ’Ό Business
(259)
free with in-app purchases
18
Show Caller Name & Block Spam
Show Caller Name & Block Spam
Show Caller Name & Block Spam
Know whos calling Scam blocker
Free

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.

Real ID Caller NameSpam and fraud call protectionPhone number identification
πŸ”§ Utilities
(135)
free with in-app purchases
19
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
20
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