Hiya Spam Blocker vs RoboKiller

Hiya Spam Blocker is an Android and iOS app for identifying unknown callers and screening or blocking unwanted spam, telemarketing, and robocalls. Its free version provides spam and fraud alerts, caller ID for known businesses and spam numbers, spoof protection settings, and blocking settings. Premium adds automatic call blocking, reverse number lookup, enhanced caller ID, Call Screener, and more frequent spam updates on iPhone. Premium costs $3.99 a month or $24 a year, and a 7-day trial is listed. Features vary between platforms: automated call screening is listed for iOS, while visual voicemail is listed for Android. Call Screener requires Premium and is available in the US and Canada on supported carriers; Android requires one active SIM. Individual non-business number identification is a Premium feature and is unavailable in Europe due to privacy regulations. Hiya also describes real-time voice analysis that warns about suspected deepfake voices during calls. It says newly emerging or spoofed spam numbers may initially go unflagged, and withheld numbers cannot be individually identified or blocked.

RoboKiller is an Android and iOS app that blocks spam calls and filters spam texts. Its call-blocking algorithm analyzes call metadata in less than a millisecond and blocks calls it identifies as spam before they reach the phone. Audio fingerprinting compares robocall recordings against a database of more than 1.5 billion processed phone numbers and millions of audio fingerprints. RoboKiller says its technology is 99% effective at stopping spam calls. Text filtering uses block and allow lists, number reputation, and content analysis; the company says messages are never stored or shared. The free version includes a daily-updated blacklist, blocked-call notifications, weekly insights, spam reporting, and Spam Patrol. Answer Bots, Call Screening, and Personal Data Protection require a paid plan. Answer Bots play prerecorded messages to spam callers, while Call Screening asks unknown callers for their name and reason for calling. Both features require a carrier and plan that support Conditional Call Forwarding. Listed paid options include $4.99 a month, $31.99 a year, and $39.99 a year; a 7-day trial is also listed.