RoboKiller
RoboKiller is an Android and iOS app for blocking spam calls and filtering spam texts.
What RoboKiller is
RoboKiller is an Android and iOS app for blocking spam calls and filtering spam texts. Its predictive 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 in real time with a database of more than 1.5 billion processed phone numbers and millions of audio fingerprints. RoboKiller states that its technology is 99% effective at stopping spam calls. The free version includes a daily-updated blacklist, blocked-call notifications, weekly insights, spam reporting, and Spam Patrol. Paid plans add Answer Bots, Call Screening, and Personal Data Protection. Answer Bots use prerecorded messages with spam callers; Call Screening asks unknown callers for their name and reason for calling. Both features require a carrier and plan that support Conditional Call Forwarding. Text filtering uses block and allow lists, number reputation, and content analysis; RoboKiller says messages are never stored or shared. Listed paid options are $4.99 a month, $31.99 a year, and $39.99 a year.
Good
- Free access includes spam reporting and Spam Patrol.
- Text filters use lists, reputation, and content analysis.
- Call Screening requests unknown callers’ name and reason.
- Available for iPhone and Android smartphones.
Watch out
- Answer Bots and Call Screening require a compatible carrier plan.
- Those features and Personal Data Protection require a paid plan.
- Does not work on landlines or other devices.
Who it suits
It suits iPhone and Android users seeking to screen spam calls and filter texts. Users wanting Answer Bots or Call Screening need a carrier and plan that support Conditional Call Forwarding.
Verdict
RoboKiller offers free call and text filtering, with additional call-handling features on paid plans. Check carrier support before relying on Answer Bots or Call Screening.
Plans and prices
From RoboKiller's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Global blacklist · spam notifications · weekly call/text insights · spam reporting · Spam Patrol |
| Weekly Protection | $4.99 a month | Recurring billing · cancel anytime · free trial · $4.99/month |
| Annual plan discount | $31.99 a year | 20% annual-plan discount · Billed as $31.99/yr |
| Premium annual | $31.99 a year | Custom protection · block/allow lists · caller screening · pause blocking · Answer Bots · Billed as $31.99/yr |
| Annual Protection | $39.99 a year | Recurring billing · cancel anytime · free trial · $39.99/year |
The facts
Each one read from RoboKiller's own pages, with the date it was checked.
What it does
- AI call analysis
- Its predictive call-blocking algorithm analyzes call metadata in less than a millisecond and blocks calls identified as spam before they reach the phone.checked 1 Oct 2026
- Answer Bots
- Answer Bots send callers to prerecorded recordings intended to occupy and deter scammers, and users can listen to the resulting calls.checked 15 Oct 2026
- API
- Teltech announced the Call Confidence API in May 2021 to provide businesses with RoboKiller’s machine-learning reputation and blocking signals for phone numbers.checked 15 Oct 2026
- API capabilities
- The announced enterprise API uses blocklists, audio fingerprinting, call-data analysis, call screening and customer feedback to support robocall mitigation and STIR/SHAKEN programs.checked 15 Oct 2026
- API documentation
- A public ReDoc endpoint exists for the Enterprise API, but the currently linked production specification returns a 404 error.checked 15 Oct 2026
- Audio fingerprinting
- Patented audio fingerprinting compares robocall recordings in real time against a database containing more than 1.5 billion processed phone numbers and millions of audio fingerprints.checked 1 Oct 2026
- Call Screening
- Call Screening asks unknown callers to identify themselves and provides a live transcription while the phone is ringing.checked 15 Oct 2026
- Carrier compatibility
- The help center says the service works with all carriers in the United States and Canada, while full Answer Bot and screening features require conditional call forwarding.checked 15 Oct 2026
- Carrier requirement
- Answer Bots and Call Screening require a carrier and plan that support Conditional Call Forwarding.checked 1 Oct 2026
- Documentation and support
- The help center is organized into subscriptions, how-to guides and troubleshooting, with articles covering activation, forwarding, voicemail, blocking and Personal Data Protection.checked 15 Oct 2026
- Enterprise coverage
- RoboKiller Enterprise markets protection for mobile, landline and text communications and says its predictive system can identify threats in under 0.01 second.checked 15 Oct 2026
- Enterprise integrations
- Robokiller offers business integrations with SIP and HTTP options and public- or private-cloud deployment.checked 1 Oct 2026
- Launch history
- The 2021 API announcement states RoboKiller launched in 2017 and had helped millions of Americans avoid approximately $150 million in phone-scam losses by then.checked 15 Oct 2026
- Licence
- RoboKiller describes patented and proprietary blocking technology and publishes no open-source code or open-source licence.checked 15 Oct 2026
- Limit: false positives
- Trustpilot reviewers report legitimate family, school and business calls being blocked or withheld.checked 15 Oct 2026
- Limit: inconsistent blocking
- Chrome-Stats reports many reviewers saying calls or texts still get through, are misclassified or are blocked inconsistently.checked 15 Oct 2026
- Personal Data Protection
- The Personal Data Protection feature scans public-search sites for a user’s information, requests removals and monitors for later exposure.checked 15 Oct 2026
The company
- Company headquarters and founding
- LinkedIn lists Teltech in New York, New York, founded in 2005.checked 15 Oct 2026
- Company legal name
- Crunchbase identifies the legal name as Teltech Systems, Inc.checked 15 Oct 2026
- Company size
- Crunchbase lists RoboKiller at 51–100 employees, while LinkedIn’s Teltech page displays one employee.checked 15 Oct 2026
- Ownership news
- A January 10, 2024 release says Bending Spoons agreed to acquire IAC’s Mosaic Group assets, including RoboKiller and its intellectual property, for an undisclosed amount.checked 15 Oct 2026
Money
- Free version limits
- The free version includes a daily-updated blacklist, blocked-call notifications, weekly insights, spam reporting, and Spam Patrol, while Answer Bots, Call Screening, and Personal Data Protection require a paid plan.checked 1 Oct 2026
- Limit: billing and cancellation
- Trustpilot reviewers repeatedly allege unexpected renewals, duplicate charges, difficulty cancelling and limited access to human support.checked 15 Oct 2026
Where it runs
- Limit: Android messaging issues
- Google Play reviews mention freezes, slow performance and inability to view or send texts reliably on some Samsung phones.checked 15 Oct 2026
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