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Best Free Spam Blocker Apps

235+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated May 2026

With an average user rating of 4.5★, the free spam blocker category is one of the App Store's strongest. Browse all 235+ apps we track, sorted so the most loved ones surface first.

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😐(413K ratings)
FreeAdsIn-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 Wireless, Inc.

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
Hiya: Spam Blocker
Hiya: Spam Blocker
Hiya: Spam Blocker
Personal Call Screener
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
(237K)
free with in-app purchases
5
Phone
Phone
Phone
by Apple Distribution International
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
6
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
7
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Truecaller: Premium Caller ID
Spam Blocker・Phone Call Filter
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
(251K)
free with in-app purchases
8
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
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
(31K)
free with in-app purchases
10
YouMail: Block Spam on iPhone
YouMail: Block Spam on iPhone
YouMail: Block Spam on iPhone
Safer Calls, Texts & Voicemail
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
(98K)
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
(99K)
free with in-app purchases
12
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
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
Call Control: #1 Call Blocker
Call Control: #1 Call Blocker
Call Control: #1 Call Blocker
Block Spam Calls & Robo Calls
Free

This app automatically blocks unwanted calls from spammers, telemarketers, and robocallers using smart technology. It allows users to create personal blocklists and offers a free reverse lookup feature. Protect your phone from scams and unwanted interruptions.

Smart blocking technologyAutomatic spam call blockingPersonal blocklist
🔧 Utilities
(6.4K)
free with in-app purchases
15
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
16
Caller ID Block: Spam Blocker.
Caller ID Block: Spam Blocker.
Caller ID Block: Spam Blocker.
Call Filter: True Calls
Free

Take control of your digital communication by blocking unwanted spam messages, calls, and emails. This app offers advanced filtering and customizable rules to keep your inbox and call log clean, ensuring a distraction-free experience. Enjoy privacy with local processing and regular updates against new threats.

Unlimited spam blocking filtersCustomizable rules for precise filteringBlacklist and whitelist management
🔧 Utilities
(0)
free with in-app purchases
17
AdSpamBlock -adblocker
AdSpamBlock -adblocker
AdSpamBlock -adblocker
adblock＆spamfilter
Free

This app blocks unwanted advertisements and detects spam across various browser and email applications. It protects users from phishing ads and illegal tracking, offering a cleaner and safer online experience.

Blocks ads in browsers (Safari, Chrome)Blocks ads in email applicationsDetects and blocks spam
🔧 Utilities
(536)
free with in-app purchases
18
CallHound Unwanted Calls Block
CallHound Unwanted Calls Block
CallHound Unwanted Calls Block
Spam Call Blocker App
Free

This app helps you block unwanted calls from spammers, strangers, and advertisers. You can create custom rules to block calls entirely or tag them as unwanted, managing your blocklist with an intuitive interface. It offers cloud backup for your rules via social media accounts and works without an internet connection.

Block spam and unwanted callsCreate unlimited custom blocking rulesFine-tune rules with special symbols
🔧 Utilities
(239)
free
19
Spam Call Blocker - Protect
Spam Call Blocker - Protect
Spam Call Blocker - Protect
Block Unknown Callers－Contacts
Free

This app helps you block unwanted calls from scammers, spammers, telemarketers, and unknown numbers. It uses an advanced algorithm and user reports to identify and block spam, giving you control over who can contact you.

Block spam callsBlock telemarketersBlock unknown callers
🔧 Utilities
(1.9K)
subscription
20
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

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