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Best Unknown Caller Apps

203+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated April 2026

Out of 203+ unknown caller apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Unknown Caller

TrapCall: Reveal No Caller ID#1

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

Control Who Calls You & Block
Editor's Choice
πŸ’Ό Business
4.2😞(25K ratings)
FreeAdsIn-App Purchases
#28in 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

Take control of your incoming calls with an application that reveals unknown numbers and blocks unwanted callers. Download now to put an end to anonymous calls and stay in charge of your phone.

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
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
#45in 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 and block spam calls, search for unknown numbers, and utilize AI-powered call screening and recording features with this app. Enhance your phone call experience and safeguard your communication effortlessly. Spot annoying spam calls now!

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
Number Finder True: Caller ID#3

Number Finder True: Caller ID by Digitalists Interactive Agency Ltd

Spam and Lookup Protection
Worth Considering
πŸ”§ Utilities
4.7😞(70K ratings)
FreeAdsIn-App Purchases
Number Finder True: Caller ID screenshot 1
Number Finder True: Caller ID screenshot 2
Number Finder True: Caller ID screenshot 3
Number Finder True: Caller ID screenshot 4
Number Finder True: Caller ID screenshot 5

Reverse Phone Lookup application that helps you identify unknown callers and block spam calls. Simply enter a phone number to get detailed caller information and take control of your incoming calls. Stay informed and stay safe with Number Finder.

What We Love

  • πŸš€ Helpful in finding unknown callers
  • πŸ‘ Provides useful information
  • πŸ’‘ Ability to track and monitor calls

Room to Improve

  • πŸ› Inaccurate or incomplete information
  • πŸ’° Expensive subscription fees
  • πŸ”’ Privacy concerns with required permissions

More Unknown Caller apps to explore

4
Hiya: Spam Blocker
Hiya: Spam Blocker
Hiya: Spam Blocker
Personal Call Screener
Free

Block spam calls and messages effortlessly with our cutting-edge application. Say goodbye to nuisance calls for good – download now and reclaim your peace of mind.

πŸ”§ Utilities
(237K)
5
Robokiller: Spam Call Blocker
Robokiller: Spam Call Blocker
Robokiller: Spam Call Blocker
Stop 99% of Robocalls & Texts
Free

This application effectively blocks spam calls and robocalls to help users avoid unwanted interruptions, allowing for a more peaceful and uninterrupted phone experience. Take control of your calls with this powerful spam call blocker.

πŸ”§ Utilities
(413K)
6
Real Caller : Caller id
Real Caller : Caller id
Real Caller : Caller id
Number Lookup - Phone Numbers
Free

An application that allows users to create profiles in a directory for others to search and connect with, block unwanted calls, and communicate via instant messaging. Users can subscribe to unlock premium features like enhanced search options. Visit the website for more information on privacy policy and terms of use.

πŸ”§ Utilities
(3.3K)
7
Sync.me - Caller ID & Contacts
Sync.me - Caller ID & Contacts
Sync.me - Caller ID & Contacts
Block Spam & Identify Callers
Free

An app that identifies unknown callers, blocks spam calls, and keeps contacts organized with social updates. Improve your calling experience and stay connected effortlessly.

🌐 Social Networking
(22K)
8
SpamSafe: Spam Call Blocker
SpamSafe: Spam Call Blocker
SpamSafe: Spam Call Blocker
Lookup & Block Unknown Numbers
Free

The application is a spam call blocker that helps users take control of their phone communication. It allows users to identify callers, filter out unwanted spam, and access detailed information on any number, ensuring seamless and secure communication. With its comprehensive features, the app aims to protect users from annoying robocalls, persistent telemarketers, and scammers, giving them back their peace of mind.

πŸ”§ Utilities
(4.5K)
9
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
Robo call blocker scam shield
Free

This app is a powerful spam call blocker for iPhone, using advanced AI to automatically filter out 99% of spam calls, robocalls, telemarketers, and scams. With over 3 million spammers blocked, it ensures you never receive unwanted calls again.

πŸ”§ Utilities
(25K)
10
Reverse Lookup
Reverse Lookup
Reverse Lookup
Phone number lookup pro.
Free

Reverse Lookup is a free iOS app that provides detailed information about phone numbers, including spam likelihood. Features include finding information on numbers, reporting scammers, and blocking callers. Quickly identify unknown callers before answering.

πŸ” Reference
(146K)
11
Reveal No Caller ID – MaskOff
Reveal No Caller ID – MaskOff
Reveal No Caller ID – MaskOff
Unmask & trap a blocked call
Free

Unmask unknown calls with our app - see who's behind the No Caller ID! Block unwanted calls and take control of your incoming calls today.

πŸ’Ό Business
(523)
12
Show Caller Name & Block Spam
Show Caller Name & Block Spam
Show Caller Name & Block Spam
Know whos calling Scam blocker
Free

This application identifies incoming calls and displays the caller's name, making it easier to recognize who is calling before answering. Never miss an important call again – download now!

πŸ”§ Utilities
(134)
13
Getcontact
Getcontact
Getcontact
Caller ID & Spam Blocker
Free

Manage your calls more efficiently with this app that helps identify unknown numbers, block spam calls, and organize your contacts easily. Stay in control of your communication with just a few taps. Download now to simplify your call management experience.

πŸ”§ Utilities
(59K)
14
Whoscall: Caller ID & Block
Whoscall: Caller ID & Block
Whoscall: Caller ID & Block
Report scam, build community
Free

Identify unknown callers and block spam calls with this app that provides real-time caller identification. Stay secure and in control of your calls today.

πŸ”§ Utilities
(3K)
15
Mr. Number Lookup & Call Block
Mr. Number Lookup & Call Block
Mr. Number Lookup & Call Block
Identify callers quickly
Free

This application allows users to identify and block spam calls, search for unknown numbers, and manage their contacts efficiently. Stay protected from unwanted calls and take control of your phone with this all-in-one solution.

πŸ”§ Utilities
(99K)
16
Everybody - AI caller ID
Everybody - AI caller ID
Everybody - AI caller ID
by panRobotics
Free

Identify spam calls in Serbia with an AI caller ID app that flags reported spam numbers. Keep your phone safe and spam-free.

πŸ” Reference
(942)
17
Change Phone Number by Numbr
Change Phone Number by Numbr
Change Phone Number by Numbr
Spoof Call & Text, Caller ID
Free

A useful app that allows users to change their phone numbers for private texting. Keep your personal number confidential with this convenient tool.

πŸ”§ Utilities
(2.6K)
18
True CallerID: Spam Blocker
True CallerID: Spam Blocker
True CallerID: Spam Blocker
Identify unknown calls & spam
Free

This application helps identify unknown callers, block robocalls, and stop spam calls automatically with advanced features like smart spam detection, real-time caller lookup, and AI-powered scam call blocking. Download now and take back control of your phone by identifying who's calling and blocking unwanted numbers.

πŸ”§ Utilities
(184)
19
Caller App : Caller ID & Block
Caller App : Caller ID & Block
Caller App : Caller ID & Block
Identify unknown calls & spam
Free

Get instant caller identification and spam call blocking with this powerful application. Enhance your phone experience and stay protected from unwanted calls. Download now for a seamless communication experience.

πŸ”§ Utilities
(267)
20
NumBuster. Real Name Caller ID
NumBuster. Real Name Caller ID
NumBuster. Real Name Caller ID
Who is calling? Block spam sms
Free

An app that provides real caller ID, blocks spam calls and SMS, and has a database of scammers and spammers. Users can block calls, access detailed phone number information, and connect with mutual acquaintances. It also offers protection from fraudsters and constantly updates users about various types of unwanted calls and messages.

πŸ”§ Utilities
(386)

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