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Best Free Spam Blocker Apps

248+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated August 2026

With an average user rating of 4.5★, the free spam blocker category is one of the App Store's strongest. Browse all 248+ apps we track, sorted so the most loved ones surface first.

Compare top Free Spam Blocker Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Robokiller: Spam Call BlockerRobokiller: Spam Call BlockerFree4.5★ (414K)NoYesAug 2026
2Verizon Call FilterVerizon Call FilterFree4.7★ (300K)NoNoAug 2026
3T-Mobile Scam ShieldT-Mobile Scam ShieldFree4.7★ (208K)NoNoAug 2026
4PhonePhoneFree4.0★ (8.5K)NoNoAug 2026
5Hiya: Spam BlockerHiya: Spam BlockerFree4.5★ (238K)NoYesAug 2026
6Spam Call and Text BlockerSpam Call and Text BlockerFree4.6★ (59)YesYesAug 2026
7RealCall - Spam Call BlockerRealCall - Spam Call BlockerFree4.5★ (25K)NoYesAug 2026
8Spam Zero: Spam Call BlockerSpam Zero: Spam Call BlockerFree4.1★ (7)NoNoJul 2026

Top Picks for Free Spam Blocker

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😐(414K ratings)
FreeIn-App Purchases
#9in 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
Verizon Call Filter#2

Verizon Call Filter by Verizon Wireless

Put an end to mystery calls
Strong Contender
🔧 Utilities
4.7😐(300K ratings)
Free
Verizon Call Filter screenshot 1
Verizon Call Filter screenshot 2
Verizon Call Filter screenshot 3
Verizon Call Filter screenshot 4
Verizon Call Filter screenshot 5

This app helps you identify and block unwanted spam and robocalls. It automatically screens incoming calls, alerts you to suspected spam, and can send high-risk callers directly to voicemail. You can also report spam numbers and customize your blocking preferences for greater control over your calls.

What We Love

  • 🚀 Blocks spam calls
  • 🔒 Helps reduce spam
  • 👍 Works well for some users
  • ⭐️ Useful tool

Room to Improve

  • 🐛 Doesn't block all spam calls
  • 🔒 Blocks legitimate calls
  • 💰 Paid version required for full functionality
T-Mobile Scam Shield#3

T-Mobile Scam Shield by MetroPCS

Your call control center.
Worth Considering
🔧 Utilities
4.7😐(208K ratings)
Free
T-Mobile Scam Shield screenshot 1
T-Mobile Scam Shield screenshot 2
T-Mobile Scam Shield screenshot 3
T-Mobile Scam Shield screenshot 4
T-Mobile Scam Shield screenshot 5
T-Mobile Scam Shield screenshot 6

This app provides advanced call management features to protect you from unwanted scam and robo calls. It uses AI and machine learning to identify and block suspicious numbers, offers full caller ID, and allows you to report fraudulent calls.

What We Love

  • 🚀 Blocks many scam calls
  • 👍 Useful app for T-Mobile customers
  • 🔒 Helps improve phone security

Room to Improve

  • 🐛 Inconsistent blocking of known scammers
  • 🚫 Blocks some legitimate calls
  • 💰 Premium features should be free for T-Mobile customers

More Free Spam Blocker apps to explore

4
Phone
Phone
Phone
by Apple
Free

This app consolidates all your calling needs, including standard phone calls, FaceTime audio, and video calls. It offers advanced features like voicemail transcription, call recording, and intelligent call screening to manage your communications efficiently.

Unified calls (phone, FaceTime audio/video)Voicemail transcription and summariesLive call recording
🔧 Utilities
(8.5K)
free
5
Hiya: Spam Blocker
Hiya: Spam Blocker
Hiya: Spam Blocker
AI fraud & spam protection
Free

Block unwanted spam and scam calls while identifying unknown callers. Get real-time caller ID and call reasons before you answer, and protect your voicemail from spam. Offers premium features for an enhanced calling experience.

Spam and scam call blockingReal-time caller IDCall reason identification
🔧 Utilities
(238K)
free with in-app purchases
6
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
7
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
RealCall - Spam Call Blocker
Robo call blocker scam shield
Free

Automatically identify and filter out unwanted calls, robocalls, and telemarketers using advanced AI. Protect yourself from scams and unknown numbers with customizable blocklists and smart alerts. Enjoy an ad-free experience and advanced features with a premium subscription.

AI-powered spam call blockingFraud SMS detectionCustom blocklist and whitelist
🔧 Utilities
(25K)
freemium
8
Spam Zero: Spam Call Blocker
Spam Zero: Spam Call Blocker
Spam Zero: Spam Call Blocker
One tap to block 1M spammers!
Free

Block unwanted spam calls with a vast database of known spammers. This privacy-focused app keeps all blocking data on your device, ensuring your calls and contacts remain private. Enjoy smart protection that distinguishes spam from important calls with an easy setup.

Block 1M+ known spam numbersComplete privacy, no data collectionDevice-only call blocking
🔧 Utilities
(7)
free
9
Call Protect: Robocall Blocker
Call Protect: Robocall Blocker
Call Protect: Robocall Blocker
Caller ID & Spam Call Blocker
Free

This app blocks unwanted calls from telemarketers, scammers, and spammers. It provides caller ID information for suspicious numbers and automatically blocks high-risk callers. You can also perform free reverse phone lookups for numbers in the US and Canada.

Automatic spam call filterCaller ID for risky numbersReverse phone lookup
🔧 Utilities
(32K)
free with in-app purchases
10
YouMail: Spam Call Blocker
YouMail: Spam Call Blocker
YouMail: Spam Call Blocker
Protect Your Phone Number
Free

This app blocks unwanted robocalls and spam texts, offering safer communication. It provides a free tier with basic blocking and a privacy scan, with premium options for enhanced protection and an additional phone number.

Robocall blockingSpam text blockingSafer visual voicemail
🔧 Utilities
(99K)
free with in-app purchases
11
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
(100K)
free with in-app purchases
12
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
13
SpamHound SMS Spam Filter
SpamHound SMS Spam Filter
SpamHound SMS Spam Filter
Text Messages Spam Blocker App
Free

This app acts as a text message blocker, filtering unwanted SMS and MMS content. It allows users to create custom filters and manage blacklists and whitelists to protect against spam, advertising, and unknown senders. The app operates without needing an internet connection and prioritizes user privacy by not accessing message content.

Unlimited spam blocking filtersFlexible filtering rulesBlacklist and Whitelist management
🔧 Utilities
(1.1K)
free
14
McAfee: Stay Secure & Private
McAfee: Stay Secure & Private
McAfee: Stay Secure & Private
Scam, Data & ID Protection
Free

This app offers comprehensive protection against online threats, including scam detection for texts and emails, VPN for secure browsing, and identity monitoring. It helps safeguard your personal information and devices from various cyber risks.

Scam Detector for texts and emailsSecure VPN for public Wi-FiIdentity monitoring and alerts
🔧 Utilities
(236K)
freemium
15
Temp Email - Temporary Mail
Temp Email - Temporary Mail
Temp Email - Temporary Mail
Disposable Inbox & Address
Free
🔧 Utilities
(0)
16
Montiguard: AI Spam Blocker
Montiguard: AI Spam Blocker
Montiguard: AI Spam Blocker
SMS Filter & Scam Detector
Free
🔧 Utilities
(0)
17
Antivirus & Ad Block :Privax
Antivirus & Ad Block :Privax
Antivirus & Ad Block :Privax
DNS Firewall & Phone Security
Free

This app acts as a DNS firewall and phone security tool, blocking unwanted connections at the DNS level. It prevents ads, trackers, and harmful websites from loading, offering enhanced privacy and control over internet access.

DNS-level ad and tracker blockingProtection against malicious websitesFocus Mode for restricted internet access
🔧 Utilities
(2)
freemium
18
CryWolf · Spam Call Killer
CryWolf · Spam Call Killer
CryWolf · Spam Call Killer
Block spam, scams & robocalls.
Free
🔧 Utilities
(0)
19
CloakID – Private Numbers
CloakID – Private Numbers
CloakID – Private Numbers
Second number, calls screened
Free

Create distinct phone numbers for different aspects of your life, like work or personal use, without revealing your primary number. Each number handles calls, texts, and voicemail, with incoming calls screened based on their stated purpose. Review call details and voicemails to manage unwanted interruptions.

Separate phone numbers for different life areasCall screening based on caller's stated purposeFull voicemail transcripts and activity feed
🔧 Utilities
(1)
free with in-app purchases
20
Catch All Lite
Catch All Lite
Catch All Lite
AI-Powered Phishing Blocker
Free

This AI-powered tool helps protect your iPhone from spam and phishing attempts. It can detect suspicious texts and verify the safety of links directly within the app, offering enhanced security for your communications.

AI-powered spam and phishing detectionVerify suspicious link safetyControl Center widget for quick checks
🔧 Utilities
(0)
free with in-app purchases

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FAQ about Free Spam Blocker

What are the best free spam blocker apps for iPhone?
Robokiller: Spam Call Blocker tops our free spam blocker apps ranking as of August 2026, with a 4.5-star average from 414K App Store ratings, and it's free to download.
Robokiller: Spam Call Blocker has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 248+ free spam blocker apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Robokiller is designed to eliminate up to 99% of spam calls and text messages. It uses a global database of known spam numbers and AI-powered audio fingerprinting to identify and block unwanted communications. The app also offers features to annoy spammers and protect your personal information.
It employs a multi-pronged approach. A global database of 1.4 billion analyzed calls instantly protects against known scams. Additionally, patented audio fingerprinting technology uses machine learning to identify and block annoying, unwanted calls before they ring your phone.