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Best Unknown Number Filter Apps & Games

0+ iOS apps & games curated and reviewed

4.4 avg rating
20 free apps & games
Updated June 2026

Robo Shield is the household name in unknown number filter, but it's far from the only option. We track 0+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Unknown Number Filter

Robo Shield: AI Spam Filter#1

Robo Shield: AI Spam Filter by AnchorFree, LLC

Block Unknown Caller ID Scams
Editor's Choice
🔧 Utilities
2.8😞(54 ratings)
FreeIn-App Purchases
Robo Shield: AI Spam Filter screenshot 1
Robo Shield: AI Spam Filter screenshot 2
Robo Shield: AI Spam Filter screenshot 3
Robo Shield: AI Spam Filter screenshot 4
Robo Shield: AI Spam Filter screenshot 5
Robo Shield: AI Spam Filter screenshot 6

This app uses artificial intelligence to screen incoming calls, distinguishing legitimate calls from spam, robo callers, and scams. It acts as a personal call assistant, identifying unknown callers and providing detailed information about each call.

What We Love

  • 🚀 Works well to block spam calls
  • 🔒 Provides detailed caller information
  • 👍 Useful feature to mark and block spam numbers

Room to Improve

  • 🐛 App crashes or shows blank screen
  • 🔒 Concerns about privacy and data usage
  • 👎 Subscription required for full functionality
SpamSafe: Spam Call Blocker#2

SpamSafe: Spam Call Blocker by PLEKMIN TRADE SL

Lookup & Block Unknown Numbers
Strong Contender
🔧 Utilities
4.5😞(4.6K ratings)
FreeAdsIn-App Purchases
SpamSafe: Spam Call Blocker screenshot 1
SpamSafe: Spam Call Blocker screenshot 2
SpamSafe: Spam Call Blocker screenshot 3
SpamSafe: Spam Call Blocker screenshot 4
SpamSafe: Spam Call Blocker screenshot 5

Block unwanted calls and messages with advanced caller ID, filtering, and a customizable blacklist. Protect yourself from spam, robocalls, and scams with real-time detection and defense.

What We Love

  • 🚀 No more spam calls

Room to Improve

  • 💸 Paid service but not free as advertised
  • 🔍 Ineffective at blocking spam
  • 🤬 Deceptive marketing tactics
Reverse Lookup#3

Reverse Lookup by Orave Technologies

Phone number lookup pro.
Worth Considering
🔍 Reference
4.7😊(146K ratings)
FreeAds
#80in Reference
Reverse Lookup screenshot 1
Reverse Lookup screenshot 2
Reverse Lookup screenshot 3
Reverse Lookup screenshot 4
Reverse Lookup screenshot 5

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.

What We Love

  • 🚀 Amazing tracking service
  • 💯 Helpful & instrumental
  • 👍 Excellent Trustworthy Finder
  • 🔒 Unique, helpful review

Room to Improve

  • 🐛 Inaccurate
  • 🐛 SCAM!!!
  • 🐛 Canceled app they kept taking money out of my account and now deny it

More Unknown Number Filter apps to explore

4
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
🔧 Utilities
(70K)
free with in-app purchases
5
Nomorobo - Robocall Blocker
Nomorobo - Robocall Blocker
Nomorobo - Robocall Blocker
Call Filter & Scam Shield
Free

This app blocks unwanted robocalls, telemarketers, spam texts, and scammers from reaching your phone. It identifies and filters out millions of malicious callers daily, while allowing important alerts to get through. Enjoy peace of mind with real-time protection and customizable blocking options.

Real-time robocall blockingIdentifies new robocallers dailyAllows important alerts
🔧 Utilities
(21K)
free with in-app purchases
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
🔧 Utilities
(184)
free with in-app purchases
7
Ghost - Second Phone Number
Ghost - Second Phone Number
Ghost - Second Phone Number
Private Text & Call
Free

Get a private, local phone number to stop spam and protect your identity. Receive texts, make unlimited calls, and use a temporary number for online sign-ups and transactions without revealing your real number.

Temporary phone numberUnlimited callsSMS verification codes
🔧 Utilities
(6.9K)
subscription
8
Number Match - Numbers Game
Number Match - Numbers Game
Number Match - Numbers Game
Number matching puzzle games
Free

This addictive puzzle game challenges you to match pairs of numbers to clear the board. Train your logic and concentration skills with a classic pen-and-paper game brought to your mobile device. Enjoy daily challenges and seasonal events for a fun and engaging brain-teasing experience.

Match pairs of equal numbersPairs that add up to 10Connect numbers horizontally, vertically, and diagonally
🎮 Games
(235K)
free with in-app purchases
9
Burner: Second Phone Number
Burner: Second Phone Number
Burner: Second Phone Number
Private Text, Voice Calls, VPN
Free

Create and manage multiple private phone numbers for calls and texts. Keep your personal number secure by using disposable lines for different contacts or situations. Organize communications and block unwanted spam.

Multiple private phone numbersUnlimited SMS and callsBurn or swap numbers
🔧 Utilities
(93K)
free with in-app purchases
10
SLYNUMBER
SLYNUMBER
SLYNUMBER
Your second phone number.
Free

Get a real, private mobile number for calls and texts without a carrier contract. Protect your personal information and separate your communications for business, dating, or travel.

Real mobile numbers, not VoIPUnlimited inbound calls & texts100 outbound credits monthly
🌐 Social Networking
(2.6K)
subscription
11
2248: Number Puzzle 2048
2248: Number Puzzle 2048
2248: Number Puzzle 2048
2248 Number Puzzle Game
Free

Connect identical numbers by swiping vertically or horizontally to create higher values and achieve the highest score. This addictive puzzle game sharpens your mind and reflexes while offering offline play and global leaderboards.

Connect identical numbers vertically and horizontallyMerge numbers to create higher values (e.g., 1024, 2048)Offline play without internet connection
🎮 Games
(6.6K)
free with in-app purchases
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
💼 Business
(25K)
free with in-app purchases
13
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
(59K)
free with in-app purchases
14
Number Lookup: Who is calling?
Number Lookup: Who is calling?
Number Lookup: Who is calling?
Reverse phone number lookup
Free

Identify unknown callers and screen potentially threatening numbers with a vast global database. Quickly find personal details, detect junk calls, and add numbers to your contacts anonymously. Unlimited queries are available without registration.

Query number informationIdentify junk numbersAnonymous search
🔧 Utilities
(478)
free with in-app purchases
15
Hushed: US Second Phone Number
Hushed: US Second Phone Number
Hushed: US Second Phone Number
Private Texting & Calling App
Free

Obtain a secondary phone number for private calls and texts. Ideal for online dating, selling items, travel, and more, it offers numbers from various area codes without needing a new SIM card. Enjoy features like voicemail and internet calling with flexible plans.

Second phone numberPrivate texting and callingInternet calling (VoIP)
🔧 Utilities
(22K)
free with in-app purchases
16
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
🔧 Utilities
(99K)
free with in-app purchases
17
Number Match: 2048 Puzzle
Number Match: 2048 Puzzle
Number Match: 2048 Puzzle
Number blocks merge game.
Free

This is a colorful and addictive number block merge game inspired by 2048 mechanics. Connect same numbered blocks to reach higher numbers and achieve new checkpoints. Enjoy strategic gameplay with no time limits and an auto-save feature.

Number block merging2048 inspired mechanicsStrategic gameplay
🎮 Games
(59K)
free with in-app purchases
18
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
🔧 Utilities
(120)
free with in-app purchases
19
Textkiller - Spam Text Blocker
Textkiller - Spam Text Blocker
Textkiller - Spam Text Blocker
Block Unwanted Messages
Free

This app automatically blocks unwanted spam text messages, protecting you from scams and telemarketing. It offers customizable filtering options, a constantly updated global block list, and a privacy-first approach to keep your inbox clean and your personal information secure.

Automatic spam text eliminationGlobal block list updated constantlyPredictive SMS blocking algorithm
🔧 Utilities
(13K)
free with in-app purchases
20
Number Games - Match Numbers
Number Games - Match Numbers
Number Games - Match Numbers
Number Matching Game, Match 10
Free

Engage in a classic number matching puzzle game designed to sharpen your mind. Connect pairs of identical numbers or those that sum to ten to clear the board and achieve high scores. Enjoy a relaxing, stress-free experience with endless levels and rewarding collectibles.

Match pairs of numbersSum to 10 puzzlesBrain training exercises
🎮 Games
(222)
free with in-app purchases