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Best Block Unknown Text Apps & Games

221+ iOS apps & games curated and reviewed

4.4 avg rating
20 free apps & games
Updated May 2026

The best block unknown text apps on iPhone average 4.4★ across 221+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.

Top Picks for Block Unknown Text

Robokiller: Spam Call Blocker#1

Robokiller: Spam Call Blocker by Mosaic S.r.l.

Stop 99% of Robocalls & Texts
Editor's Choice
🔧 Utilities
4.5😐(413K ratings)
FreeAdsIn-App Purchases
#10in Utilities
Robokiller: Spam Call Blocker screenshot 1
Robokiller: Spam Call Blocker screenshot 2
Robokiller: Spam Call Blocker screenshot 3
Robokiller: Spam Call Blocker screenshot 4
Robokiller: Spam Call Blocker screenshot 5
Robokiller: Spam Call Blocker screenshot 6

This app blocks up to 99% of unwanted spam calls and texts using advanced AI and a vast database. It also offers a unique feature to annoy spammers with automated responses and protects your personal information from being sold online.

What We Love

  • 🚀 Blocks spam calls effectively
  • 😂 Entertaining answer bots
  • 🤫 Reduces unwanted call volume
  • 👍 Convenient call screening

Room to Improve

  • 🐛 App issues like resetting, deactivation, and call forwarding problems
  • 🚫 Blocks some legitimate calls
  • 🤖 Concerns about increased spam calls after using the app
Textkiller - Spam Text Blocker#2

Textkiller - Spam Text Blocker by Mosaic S.r.l.

Block Unwanted Messages
Strong Contender
🔧 Utilities
4.3😐(13K ratings)
FreeAdsIn-App Purchases
Textkiller - Spam Text Blocker screenshot 1
Textkiller - Spam Text Blocker screenshot 2
Textkiller - Spam Text Blocker screenshot 3
Textkiller - Spam Text Blocker screenshot 4
Textkiller - Spam Text Blocker screenshot 5
Textkiller - Spam Text Blocker screenshot 6

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.

What We Love

  • 🚀 Stops spam texts
  • 👍 Filters messages effectively
  • 💡 Keyword blocking
  • 🚀 Works well when functioning

Room to Improve

  • 🐛 App not working after updates
  • 🐛 Issues with premium features
  • 🔍 Concerns about privacy and data access
Robo Spam Text & Call Blocker#3

Robo Spam Text & Call Blocker by Murphy Brantley

Block & Filter Message Spammer
Worth Considering
🔧 Utilities
4.3😞(5K ratings)
FreeIn-App Purchases
Robo Spam Text & Call Blocker screenshot 1
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Robo Spam Text & Call Blocker screenshot 5
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This app provides immediate relief from robocalls, telemarketing, and spam text messages. It blocks unwanted calls and messages, including those using neighbor spoofing, and also prevents spam and ads in your Safari web browser. Enjoy a risk-free trial before subscribing to a service that reduces unwanted calls by up to 99%.

What We Love

  • 🚀 Blocks spam calls effectively
  • 👍 Helpful for reducing unwanted calls
  • 💡 Useful for political donation requests
  • 🔒 Protects against scams

Room to Improve

  • 🐛 Doesn't block all spam calls
  • 👎 Ineffective or doesn't work as advertised
  • 🔍 Difficult to set up or configure

More Block Unknown Text apps to explore

4
SpamSafe: Spam Call Blocker
SpamSafe: Spam Call Blocker
SpamSafe: Spam Call Blocker
Lookup & Block Unknown Numbers
Free

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.

Spam call blockerReal-time caller IDIntelligent call filter
🔧 Utilities
(4.6K)
free with in-app purchases
5
Nomorobo Max Spam Call Blocker
Nomorobo Max Spam Call Blocker
Nomorobo Max Spam Call Blocker
Call Filter & Scam Shield
Free

This app blocks 100% of spam calls and texts using advanced technology and a vast database of known robocallers. It ensures you never miss important calls while protecting you from scams and unwanted messages. The service also offers a family plan for comprehensive protection.

Blocks 100% of spam calls and textsWorld's largest database of robocallersAI-powered insights for continuous improvement
📊 Productivity
(4.9K)
subscription
6
Robo Shield: AI Spam Filter
Robo Shield: AI Spam Filter
Robo Shield: AI Spam Filter
Block Unknown Caller ID Scams
Free

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.

AI-powered call screeningIdentifies spam, unverified, and verified callsAdvanced Caller ID with call categorization
🔧 Utilities
(54)
subscription
7
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
8
Easy Caller ID
Easy Caller ID
Easy Caller ID
Smart Address Book
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
9
Block vs Block
Block vs Block
Block vs Block
Block Battle: 2-Player in iPad
Free
$7.00 | 100% OFF

Experience a classic block-falling puzzle game reimagined as a real-time battle. Challenge an adaptive AI or compete head-to-head with a friend on a single iPad screen. Perfect for quick matches and intense competition.

Real-time block falling battlesAdaptive AI opponent2-player local multiplayer on iPad
🎬 Entertainment
(396)
free with in-app purchases
10
Block Puzzle Jewel World
Block Puzzle Jewel World
Block Puzzle Jewel World
Train Your Brain Block Puzzle
Free

A free, casual puzzle game designed to sharpen your mind and boost memory. Drag and drop blocks to fill horizontal and vertical lines, clearing them for higher scores. Enjoy beautiful jewel themes and play offline without time limits.

Drag and drop block puzzle gameplayClear vertical and horizontal linesHigh score challenges
🎮 Games
(12K)
free with in-app purchases
11
Call Protect Spam Call Blocker
Call Protect Spam Call Blocker
Call Protect Spam Call Blocker
Scam Shield, Caller ID Look Up
Free

Block unwanted spam calls and messages with advanced identification and filtering. Enhance your mobile security with Wi-Fi checks and data breach alerts. Take control of your privacy and enjoy a cleaner, safer communication experience.

Block spam callsIdentify unknown callersFilter junk SMS
📊 Productivity
(2.8K)
subscription
12
Make It Big
Make It Big
Make It Big
Show large text on your screen
Free

Display large, customizable text messages that fill your entire screen. Easily edit text, switch between portrait and landscape modes, and even flash your message with a shake. Store recent messages for quick access.

Full-screen text displayCustomizable fonts and colorsPortrait and landscape support
🔧 Utilities
(5.1K)
free
13
Copy Text On Screen
Copy Text On Screen
Copy Text On Screen
Extract Text, Copy & Translate
Free

Easily extract text from screenshots and images with advanced OCR technology. Copy, translate, or read aloud any text, even from social media apps. Supports over 100 languages for translation and 92 for recognition.

Extract text from screenshotsExtract text from imagesOCR text recognition
📊 Productivity
(4.8K)
free with in-app purchases
14
Block Odyssey
Block Odyssey
Block Odyssey
The Odyssey of Block Puzzles.
Free

Engage in a strategic block puzzle adventure with multiple game modes. Place blocks to achieve collection targets, reach mileage goals, or aim for high scores. This game offers intricate level designs for endless puzzle fun.

Strategic block placementCollection ModeTravel Mode
🎮 Games
(3.9K)
ad-supported
15
Spam Call and Text Blocker
Spam Call and Text Blocker
Spam Call and Text Blocker
Block Scam and Filter Spammers
Free

This app filters unwanted spam texts and protects you from scams. It automatically checks incoming messages for suspicious content, sending them to a junk folder while keeping your data private. Customize blocking and allow lists for a cleaner inbox.

Automatic spam and scam detectionMessages filtered to junk folderOn-device message checking for privacy
🔧 Utilities
(59)
free with in-app purchases
16
BlockSite: Block Apps & Focus
BlockSite: Block Apps & Focus
BlockSite: Block Apps & Focus
Focus & Limit Screen Time
Free

This app helps you regain control of your time by blocking distracting websites and applications. It offers features to create custom block lists, schedule focus times, and limit usage, promoting productivity and reducing procrastination.

Website BlockerApp BlockingBlock List
📊 Productivity
(6.1K)
freemium
17
BlockerX:Adult Content Blocker
BlockerX:Adult Content Blocker
BlockerX:Adult Content Blocker
Block Sites & Apps, Quit Porn
Free

This app helps users break free from unwanted distractions and adult content with a comprehensive blocking solution. It offers features like an accountability partner, community support, and curated content to aid in achieving a clean browsing experience and overcoming addictive habits.

Accountability partner connectionCommunity support and discussionsWebsite and app blocking
📊 Productivity
(7.9K)
subscription
18
Call & Text Blocker・Block Spam
Call & Text Blocker・Block Spam
Call & Text Blocker・Block Spam
Stop scam & annoying robocalls
Free

Block unwanted spam texts and calls with advanced filtering options. Organize your messages into categories and protect your finances from fraud. Enjoy 100% privacy as all filtering occurs offline on your device.

Block and Allow listsKeyword-based filteringEmail and link blocking
🔧 Utilities
(49)
free with in-app purchases
19
SpamSMS - Block Junk Messages
SpamSMS - Block Junk Messages
SpamSMS - Block Junk Messages
Block SPAM SMS & move to JUNK
Free

This app filters unwanted SMS and MMS messages, moving them to a separate junk folder. It allows for custom rules based on keywords and sender numbers, with easy enable/disable options. The app prioritizes user privacy by working offline and features a simple, intuitive interface.

Custom keyword and number filteringEnable/disable filtering rulesOffline message filtering
🔧 Utilities
(121)
free with in-app purchases
20
Typorama: Text on Photo Editor
Typorama: Text on Photo Editor
Typorama: Text on Photo Editor
Typography Art & Poster Maker
Free

Create stunning typographic designs and posters from your text and photos without needing design skills. The app automatically generates unique layouts with various fonts and styles, saving you hours of work. Perfect for social media posts, flyers, and branding.

Automated typographic text layoutsCustomizable text styles and fontsSocial media post creation
📷 Photo & Video
(115K)
free with in-app purchases