Best Unknown Caller Apps

244+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated August 2026

Out of 244+ 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.

Compare top Unknown Caller Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1TrapCall: Reveal No Caller IDTrapCall: Reveal No Caller IDFree4.2★ (25K)YesYesAug 2026
2Real Caller : Caller idReal Caller : Caller idFree4.1★ (3.3K)YesYesAug 2026
3TextNow: Call + Text UnlimitedTextNow: Call + Text UnlimitedFree4.8★ (916K)YesYesAug 2026
4Truecaller: Premium Caller IDTruecaller: Premium Caller IDFree4.4★ (252K)YesYesAug 2026
5GetcontactGetcontactFree4.4★ (60K)YesYesAug 2026
6Number Finder Caller ID :TrueNumber Finder Caller ID :TrueFree4.7★ (70K)YesYesAug 2026
7NumberBox:CallerIDNumberBox:CallerIDFree4.5★ (465)NoNoAug 2026
8Truecaller - Caller ID & BlockTruecaller - Caller ID & BlockFree2.0★ (4)YesYesAug 2026

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
💼 Business
4.2😞(25K ratings)
FreeAdsIn-App Purchases
#29in 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
Real Caller : Caller id#2

Real Caller : Caller id by Real Caller

Number Lookup - Phone Numbers
Strong Contender
🔧 Utilities
4.1😞(3.3K ratings)
FreeAdsIn-App Purchases
Real Caller : Caller id screenshot 1
Real Caller : Caller id screenshot 2
Real Caller : Caller id screenshot 3
Real Caller : Caller id screenshot 4
Real Caller : Caller id screenshot 5

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.

What We Love

  • 💡 Efficient number lookup
  • 👍 Helpful app for finding contact info
  • 🚀 Fast and accurate search results

Room to Improve

  • 🐛 App crashes and freezes after updates
  • 🔒 Privacy concerns with data sharing
  • 💰 Subscription model is frustrating
TextNow: Call + Text Unlimited#3

TextNow: Call + Text Unlimited by TextNow, Inc.

Phone Number & Data Plans
Worth Considering
🌐 Social Networking
4.8😞(916K ratings)
FreeAdsIn-App Purchases
#8in Social Networking
TextNow: Call + Text Unlimited screenshot 1
TextNow: Call + Text Unlimited screenshot 2
TextNow: Call + Text Unlimited screenshot 3
TextNow: Call + Text Unlimited screenshot 4
TextNow: Call + Text Unlimited screenshot 5
TextNow: Call + Text Unlimited screenshot 6

This app provides free nationwide calling and texting, offering a private second phone number or a dedicated business line. It features flexible data plans, including a free option for select apps, and affordable international calling.

What We Love

  • 🚀 Free service
  • 🔒 Ability to keep number
  • 👍 Convenient for secondary number
  • 👍 Works on multiple devices

Room to Improve

  • 🐛 Frequent app crashes
  • 🐛 Unreliable call/text delivery
  • 🐛 Slow and laggy performance

More Unknown Caller apps to explore

4
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Spam & Scam Phone Call Blocker
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
(252K)
free with in-app purchases
5
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
(60K)
free with in-app purchases
6
Number Finder Caller ID :True
Number Finder Caller ID :True
Number Finder Caller ID :True
Reverse Phone Book Lookup Box
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
🔧 Utilities
(70K)
free with in-app purchases
7
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
🔧 Utilities
(465)
free
8
Truecaller - Caller ID & Block
Truecaller - Caller ID & Block
Truecaller - Caller ID & Block
Spam & Scam Phone Call Blocker
Free

Identify unknown callers, block spam and scam calls, and filter unwanted SMS messages. This app provides real-time spam protection and smart contact management for safer, more organized communication.

Identify unknown callersBlock spam and scam callsFilter unwanted SMS
🔧 Utilities
(4)
free with in-app purchases
9
Unmask - Premium Caller ID
Unmask - Premium Caller ID
Unmask - Premium Caller ID
See Hidden Number, Block Spam
Free

Identify unknown, blocked, or hidden numbers before you answer. This tool reveals the real identity behind suspicious calls, blocks spam, and allows you to search any number. Take control of your phone and never miss important calls again.

Reveal hidden numbersCaller identificationSpam and scam blocking
🔧 Utilities
(22)
subscription
10
Who Calls PIus
Who Calls PIus
Who Calls PIus
by Kapilbhai Dhodi
Free

This utility app provides detailed caller information, including personal details, call history, and location data. Users can add, share, and view this information to better understand their contacts.

Add caller informationShare caller detailsView caller profiles
🔧 Utilities
(1)
ad-supported
11
CallerX Smart ID
CallerX Smart ID
CallerX Smart ID
Contacts, call plans & AI help
Free
🔧 Utilities
(0)
12
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
🔧 Utilities
(136)
free with in-app purchases
13
Easy Caller ID
Easy Caller ID
Easy Caller ID
Spam Blocker for Unknown Calls
Free

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.

Instant caller identificationReal-time call screen displayPowerful spam call blocking
📊 Productivity
(2.7K)
free
14
Who True CallerID
Who True CallerID
Who True CallerID
CallerID & Spam
Free
🔧 Utilities
(0)
15
WhoContact: Caller ID Lookup
WhoContact: Caller ID Lookup
WhoContact: Caller ID Lookup
Find names behind numbers
Free

Instantly identify unknown callers and discover contact details for any number or name. Protect yourself from spam and fraud with real-time community reports and advanced blocking. Seamlessly integrate with WhatsApp for faster communication.

Instant caller recognitionNumber and name searchSpam and fraud protection
🔧 Utilities
(99)
free
16
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
🔧 Utilities
(306)
free with in-app purchases
17
Call And Find
Call And Find
Call And Find
by Irfan Khafi
Free
🔧 Utilities
(0)
18
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
🔧 Utilities
(765)
free with in-app purchases
19
True Caller - Number Tracker
True Caller - Number Tracker
True Caller - Number Tracker
Identify Any Unknown Caller
Free

Identify unknown callers, check number details, and track phone numbers with this app. It provides insights like region and network provider, and allows for offline access to data. You can also share your location and get live weather forecasts.

Smart Caller IDNumber TrackerReverse Number Lookup
🌐 Social Networking
(2)
free with in-app purchases
20
Phone Call - Caller ID
Phone Call - Caller ID
Phone Call - Caller ID
Phone Call
Free

Identify unknown callers and block unwanted calls with this powerful tool. It functions as a phone number lookup, spam blocker, and smart dialer, helping you see the true caller ID and region for every incoming call. Over 30 million users trust it to screen their calls.

Instant Caller ID identificationPhone number lookupSpam and unwanted call blocking
🔧 Utilities
(5)
ad-supported

FAQ about Unknown Caller

What are the best unknown caller apps for iPhone?
TrapCall: Reveal No Caller ID tops our unknown caller apps ranking as of August 2026, with a 4.2-star average from 25K App Store ratings, and it's free to download.
Yes — 20 of the top unknown caller apps we rank are free to download, including TrapCall: Reveal No Caller ID and Real Caller : Caller id.
TrapCall: Reveal No Caller ID shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 244+ unknown caller apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
TrapCall helps you identify and manage unwanted calls. It unmasks blocked or 'No Caller ID' calls, allowing you to see who is calling. Additionally, it automatically blocks a large database of known spam callers and telemarketers, and can record your incoming calls for evidence.
When you receive a blocked or 'No Caller ID' call, simply decline the call. TrapCall will then process the call and within seconds, the call will return to your phone with the caller's number unmasked. You can even receive the name and address associated with the number instantly via SMS.

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