Report updated May 5, 2026
Robokiller: Spam Call Blocker
For mobile users seeking to eliminate spam calls and text messages while protecting their personal data from public exposure.
Robokiller: Spam Call Blocker is a challenged utilities app that is available. With a 4.5/5 rating from 413.2K reviews, it faces significant user friction. Users particularly appreciate automated answer bots provide significant satisfaction by wasting time for telemarketers and scammers, though inconsistent call screening performance post-update leaves many users exposed to persistent spam calls remains a common concern.
What is Robokiller: Spam Call Blocker?
Robokiller is a spam call and text blocking app for iOS that uses audio fingerprinting and automated bots to intercept unwanted communications.
Users hire Robokiller to reclaim personal time and gain a sense of control over intrusive telemarketing, using the revenge-bot feature to turn a negative experience into a source of entertainment.
Current Momentum
v24.7 · 5d ago
Active- Shipped personal data protection feature.
- Launched local scam trend Radar.
Active Nemesis
Hiya: Spam Blocker & Caller ID
By Hiya
Other Rivals
7-Day Rank Pulse 🇺🇸
UtilitiesNo ranking data
Rating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
AI-powered audio fingerprinting analyzes unrecognized calls to prevent phone ringing
Automated recorded responses that engage and waste the time of identified spammers
Scans public search sites to identify and request removal of user private information
How much does it cost?
- Free to download
- Subscription required for service access
Subscription-only model requires payment for all core functionality, anchored by the promise of preventing financial loss.
Who Built It?
Mosaic S.r.l.
Scaling iconic digital utilities through data-driven improvements to help users navigate weather, language barriers, and communication security.
Portfolio
13
Apps
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Explore the full Mosaic S.r.l. report
Portfolio breakdown, audience, momentum, and every app published by Mosaic S.r.l..
What do users think recently?
High confidence · 98 reviews analyzed · Based on 98 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a frustrated sentiment. Users appreciate automated answer bots provide significant satisfaction by wasting time for telemarketers and scammers and effective filtering of spam calls and text messages provides a sense of daily peace, but report inconsistent call screening performance post-update leaves many users exposed to persistent spam calls and deceptive pricing practices and lack of transparent refund policies frustrate long-term subscribers.
What Users Love
What Frustrates Users
What Users Want
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Robokiller: Spam Call Blocker?
Where is it available?
Localized markets (9)
How's The Utilities Market?
How does it evolve in the Utilities market?
Robokiller holds the #11 Grossing position in the US Utilities category. The gap between its high-utility branding and recent technical regressions suggests that current chart performance is sustained by legacy brand trust rather than current filtering efficacy.
Rank progression
3 active rankings tracked — 30-day window
The rivals identified
Nemeses(1)
Hiya operates in the exact same spam-blocking niche with a massive, established caller-ID database that directly competes with Robokiller's core value proposition.
Differentiators
- Leverages a massive carrier-grade database that powers native integration for major global mobile network operators.
- Focuses on enterprise-grade caller identity verification rather than just consumer-facing spam call blocking features.
- Provides a more neutral, utility-focused interface compared to Robokiller's aggressive, gamified 'spam-fighting' branding.
Head to head
Robokiller must double down on its unique audio-fingerprinting innovation to differentiate from Hiya's carrier-backed, utility-first infrastructure dominance.
Contenders(1)
A massive competitor in the caller ID and spam protection space with a highly active user base and frequent release cadence.
Differentiators
- Utilizes a massive crowdsourced database where users tag and identify unknown numbers for the community.
- Integrates social-style features like 'tagging' numbers, which creates a powerful, self-sustaining data network effect.
Same space(3)
A privacy-first utility that captures the same 'protection' audience, though focused on browsing rather than telephony.
Differentiators
- Provides an all-in-one privacy browser that blocks trackers and ads, positioning itself as a total privacy shield.
- Leverages a strong, values-based brand identity that prioritizes user anonymity over specific feature-based utility.
A high-authority utility app that competes for the same 'privacy and security' mindshare as Robokiller.
Differentiators
- Focuses on network-level privacy and encryption rather than device-level call filtering or spam management.
- Maintains a massive, high-trust brand presence in the privacy-conscious consumer market segment.
An adjacent security utility that bundles spam protection within a broader, comprehensive mobile security suite.
Differentiators
- Bundles spam protection with VPN, Wi-Fi security, and dark web monitoring for a holistic security posture.
- Targets users seeking an all-in-one security solution rather than a single-purpose spam-blocking application.
Compare Robokiller: Spam Call Blocker against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Robokiller: Spam Call Blocker
Strengths to defend, gaps to attack
Core Strengths
- Answer Bots create viral social sharing loops
- Audio fingerprinting provides proactive defense against automated spam
Critical Frictions
- Premium tier pricing above category median
- Lack of human-led support for technical setup
Growth Levers
- B2B partnerships for data protection
- Expansion of regional area-code blocking controls
Market Threats
- Hiya’s carrier-grade database dominance
- EU data-minimization tightening
What are the next best moves?
Audit filtering logic in the latest release because screening performance is the top complaint → restore detection reliability
Inconsistent call screening is the primary driver of negative sentiment post-update.
Trade-off: Pause the development of new Answer Bot recordings — detection reliability has 3x the churn impact.
Implement human-led support channels because automated loops prevent resolution of account issues → reduce refund surge
Subscribers report inability to resolve billing and setup issues, leading to refund frustration.
Trade-off: Deprioritize the Radar feature expansion — billing transparency is critical for subscription retention.
A counter-intuitive read
The app's aggressive 'revenge' branding is a liability; while it drives viral social sharing, it masks the underlying failure of the core utility to provide a quiet, spam-free experience.
Feature Gaps vs Competitors
- Carrier-grade caller identification (available in Hiya but absent here)
Key Takeaways
Robokiller wins through viral Answer Bot branding, but its core filtering reliability is failing, so the PM must prioritize detection accuracy and human support to prevent long-term subscriber churn.
Where Is It Heading?
Declining
The spam-blocking market is shifting toward carrier-integrated solutions that offer higher identification accuracy than device-level fingerprinting. Robokiller's reliance on proprietary detection leaves it exposed to these infrastructure-backed rivals, so the PM must focus on service reliability to maintain its current grossing rank.
Inconsistent filtering in the latest release leads to persistent spam, which erodes user trust and accelerates churn.
Automated support loops prevent resolution of billing issues, causing a surge in refund requests and negative sentiment.