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TipsMay 6, 2026

Protect Yourself from Unwanted Calls: Top Apps to Block Spam Calls Before You Answer

By The Robokiller Team

Protect Yourself from Unwanted Calls: Top Apps to Block Spam Calls Before You Answer

Unwanted calls, including robocalls and telemarketing, are a significant nuisance in the United States. In 2024, Americans received over 50 billion robocalls, averaging approximately 13–15 spam calls per person each month. (antivirus.com) Fortunately, several applications can help identify and block these calls before you answer.

What Are the Best Apps to Block Unwanted Calls Before Answering?

Several apps are designed to warn users about potential spam calls before they pick up. Here are some top options:

Truecaller

Truecaller is a widely used app that identifies unknown numbers and automatically flags potential spam calls. It offers real-time caller ID, spam protection, and integrates seamlessly with your phone's default dialer. The app boasts a global database of over 500 million spam numbers, updated daily with community feedback. (rahsha.in)

Hiya

Hiya provides advanced spam detection and integrates well with carriers like AT&T and T-Mobile. It detects spoofed calls, updates spam lists automatically, and offers both free and premium versions. Hiya is the default call protection app for AT&T, T-Mobile, and some Verizon customers in the USA. (rahsha.in)

RoboKiller

RoboKiller goes beyond blocking by playing pre-recorded "answer bots" to waste scammers' time. It offers automatic spam blocking, customizable call filters, and fun anti-spam audio replies. RoboKiller has been recognized for its effectiveness in blocking robocalls and spam calls. (antivirus.com)

RealCall

RealCall is an AI-powered app that detects, engages, and blocks spam calls and SMS messages. It uses AI algorithms with a built-in reverse phone lookup service and customized answer bots for detection, engagement, and blocking of unwanted calls and messages. As of September 2022, it has blocked over 30 million spam calls and 11.6 billion spam text messages. (en.wikipedia.org)

NordVPN's Spam Call Protection

NordVPN has introduced a Spam Call Protection feature, now available to Android users in the U.S. This tool alerts users about suspected spam calls before they answer, aiming to tackle phishing and social engineering risks without compromising user privacy. The feature uses call pattern and metadata analysis to detect scam calls and does not access or store call content. (techradar.com)

How Do These Apps Compare?

When choosing a spam call blocking app, consider the following factors:

  • Database Size and Accuracy: A larger database increases the likelihood of accurately identifying spam calls. For instance, Truecaller has a global database of over 500 million spam numbers. (rahsha.in)

  • Integration with Carriers: Apps like Hiya integrate with major carriers, providing enhanced protection. Hiya is the default call protection app for AT&T, T-Mobile, and some Verizon customers in the USA. (rahsha.in)

  • Additional Features: Some apps offer unique features, such as RoboKiller's "answer bots" that waste scammers' time. (antivirus.com)

How to Choose the Right App for You?

Consider the following when selecting a spam call blocking app:

  • Compatibility: Ensure the app is compatible with your device and operating system.

  • Features: Determine which features are most important to you, such as real-time caller ID, automatic blocking, or integration with your carrier.

  • Privacy: Review the app's privacy policy to understand how your data is used and protected.

Are There Built-in Options to Block Spam Calls?

Yes, many carriers offer built-in tools to help block spam calls:

  • AT&T: Offers Call Protect, which displays a “V” (for verified) on your caller ID for calls considered legitimate and blocks potentially fraudulent calls by giving a busy signal. (consumerreports.org)

  • T-Mobile: Provides Scam ID and Scam Block. Scam ID identifies and tags suspicious calls, while Scam Block blocks calls before they ring. (consumerreports.org)

  • Verizon: Automatically enrolls eligible customers in the free version of Call Filter, which detects spam and blocks high-risk calls. (consumerreports.org)

Conclusion

To protect yourself from unwanted calls, consider using a spam call blocking app that suits your needs. Apps like Truecaller, Hiya, RoboKiller, RealCall, and NordVPN's Spam Call Protection offer various features to help identify and block spam calls before you answer. Additionally, explore built-in options provided by your carrier for enhanced protection.

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