Spam calls are a persistent nuisance, with Americans receiving over 52.5 billion robocalls in 2025 alone. (antivirus.com) To combat this, several apps offer automated call blocking services. Here's a comparison of some leading options:
1. RoboKiller
RoboKiller stands out by not only blocking spam calls but also engaging scammers with pre-recorded "answer bots," wasting their time and reducing future calls. It boasts a database of over 1.5 billion numbers and offers customizable call filters. (famisafe.wondershare.com)
2. Truecaller
Truecaller identifies unknown numbers and automatically flags potential spam calls. It provides real-time caller ID, spam protection, and integrates seamlessly with your phone's default app. (avnexo.com)
3. Hiya
Hiya offers advanced spam detection and integrates well with carriers like AT&T and T-Mobile. It detects spoofed calls, updates spam lists automatically, and has both free and premium versions. (avnexo.com)
4. Call Control
Call Control relies on community spam reports to block scam calls and fraud attempts. It supports SMS spam filtering, offers a quiet mode to silence unknown numbers, and provides weekly updates to the spam call list. (famisafe.wondershare.com)
5. Mr. Number
Mr. Number facilitates blocking spam calls and identifying unwanted callers. It allows users to block a person, area code, or even an entire country and informs users of spam calls. (infobae.com)
6. RealCall
RealCall uses AI algorithms with a built-in reverse phone lookup service and customized answer bots to detect, engage, and block unwanted calls and messages. It has a database of 1.5 billion phone numbers and is available for both Android and iOS devices. (en.wikipedia.org)
7. NordVPN's Spam Call Protection
NordVPN has introduced a Spam Call Protection feature that alerts users about suspected spam calls before they answer. It uses call pattern and metadata analysis to detect scam calls without accessing or storing call content, ensuring user privacy. (techradar.com)
Conclusion
While all these apps offer valuable features, RoboKiller's unique approach of engaging scammers with answer bots provides an additional layer of protection, making it a strong contender for those seeking comprehensive automated call blocking.
Highlights:
- Say goodbye to spam calls - NordVPN launches new spam call protection, Published on Tuesday, July 29



