--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Caller ID Block: Spam Blocker." developer_entity: "Keila Bertania" bundle_id: "com.keilabertania.antispam" app_store_id: "6751807339" category: "Utilities" primary_platform: "ios" primary_monetization: "Subscription" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2025-09-09" report_date: "2026-08-08" last_verified: "2026-08-08T00:00:00.000Z" report_version: "1.2" total_reviews: 2 overall_rating: 1 sentiment: "Upset" sentiment_score: 10 confidence: "medium" confidence_score: 0.4 top_complaint_theme: "Aggressive weekly subscription pricing creates significant friction for users expecting a lower cost of entry" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 18 momentum_velocity: "zombie" intelligence_version: 3 tags: ["utilities", "subscription", "upset sentiment", "mobile app", "app review", "app analysis", "mobile", "users", "seeking"] canonical_url: "https://marlvel.ai/apps/caller-id-block-spam-blocker" license: "CC-BY-NC 4.0" content_version: "v2" --- # Caller ID Block: Spam Blocker. Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Subscription - **Signal**: Rating 1 · Sentiment Upset - **Recent focus**: Aggressive weekly subscription pricing creates significant friction for users expecting a lower cost of entry (top complaint) > **TL;DR:** Caller ID Block: Spam Blocker. is a utilities app by Keila Bertania, rated 1/5 by 2 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Caller ID Block: Spam Blocker. faces Upset user sentiment (1/5 from 2 reviews), with users reporting aggressive weekly subscription pricing creates significant friction for users expecting a lower cost of entry as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 1/5 (2 reviews) | | **User Mood** | Upset | | **Category** | Utilities | | **Developer** | Keila Bertania | | **Pricing** | Subscription | | **Platforms** | iOS | | **Confidence** | Medium (0.4/1.0) | | **Data Age** | 18d | ## Metadata & Market Performance - **Publisher:** Keila Bertania - **Category:** Utilities - **Target Audience:** Mobile users seeking to reduce interruptions from telemarketers, robocalls, and promotional SMS messages. - **Platforms:** iOS - **Version Reviewed:** 1.2 - **Report Date:** 2026-08-08 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.4/1.0) - **App Store ID (iOS):** 6751807339 - **Bundle ID:** com.keilabertania.antispam - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-08 ## Executive Snapshot **What it is:** Caller ID Block: Spam Blocker is a utility app for iOS that filters spam SMS, MMS, and calls using local device processing. **Why users hire it:** Users hire this app to reclaim their attention from telemarketers and robocalls without exposing their communication data to cloud-based filters. ## App DNA (Features & Intent) - **[Differentiator] Local Spam Filtering:** Processes SMS, MMS, and call filtering locally on the device without requiring an internet connection. * *User Intent:* Users want to quickly find relevant content or features. - **[Standard] Custom Blacklist and Whitelist:** Allows manual management of blocked and allowed numbers to override automated filtering. * *User Intent:* Users value self-expression and personalized experiences. ## Market Position {#market-position} The app maintains a 1.0★ rating across 2 total ratings, signaling a failure to meet user expectations for a paid utility. The lack of updates for 333 days confirms a zombie development status that prevents any meaningful market share capture. ## Monetization Strategy - **Model:** Subscription - **Tiers:** 3-day free trial, Weekly subscription - **Analysis:** Subscription model anchored by a 3-day trial, gating unlimited filtering and custom rules behind a weekly recurring payment. ## 🔴 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 1/5 - **Platform Split:** iOS 1.0/5 (2 ratings) - **Overall Sentiment:** Upset ### Top Complaints (Impact Areas) - **Aggressive weekly subscription pricing creates significant friction for users expecting a lower cost of entry** ## SWOT Analysis {#swot} **Core Strengths:** - Local-processing architecture ensures user data privacy without requiring an internet connection **Growth Levers:** - Shift to a freemium model with a one-time purchase option to lower the barrier for casual users ## Recent Changes (v2 → v3) {#recent-changes} The analysis shifted from a focus on pricing pivots to a recommendation for project sunsetting due to prolonged inactivity and market consolidation. **Overall trend**: Declining **Compared at**: 2026-08-08 ### High-impact changes - **[Shifted] Strategic Outlook** (positioning) ### Medium-impact changes - **[Added] New SWOT Items** (swot) - **[Shifted] Contrarian Perspective** (positioning) ## What's New - **Latest (v1.2, 11 months ago):** General bug fixes and performance improvements. ## App Momentum (Zombie) {#momentum} - No major updates for 11 months. - Stagnant feature set since launch. > **Cadence:** 1 total versions · 0 majors in last 6 months · 332 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Caller ID Block: Spam Blocker. is an utilities app. It holds a 1/5 rating from 2 reviews. > **Bottom Line:** The app fails to justify its weekly subscription cost, because the 1.0★ rating reflects deep user dissatisfaction with the value proposition, so the PM should pivot to a freemium model to stabilize the user base. **Best for:** Mobile users seeking to reduce interruptions from telemarketers, robocalls, and promotional SMS messages. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Pivot to a freemium model because the current weekly subscription is the top complaint → reduce churn ### Outlook: Declining The utility market is consolidating around free, system-integrated spam protection, making a paid, unmaintained app obsolete. The lack of updates for nearly a year signals that this app will lose all remaining relevance as OS-level spam filtering improves, so the PM should sunset the project to avoid further brand damage. - 🔴 The 11-month development silence indicates the product is abandoned, which will lead to total user churn as iOS system updates break compatibility. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 1/5 | | Total Reviews | 2 | | Sentiment | Upset (10/100) | | Confidence | Medium | | Pricing Model | Subscription | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Caller ID Block: Spam Blocker.** (this app) | 1/5 | Upset | Keila Bertania | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Free VPN by Free VPN .org™](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) | 4.5/5 | Mixed | Free VPN LLC | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.4/5 | Mixed | Fuxin Technology | | [Potatso](https://marlvel.ai/apps/potatso) | 4.4/5 | n/a | Potatso Lab LTD | | [Quantumult X](https://marlvel.ai/apps/quantumult-x) | 3.8/5 | N/A | Cross Utility Ltd | ## Company Profile - **Developer:** Keila Bertania - **Website:** [https://docs.google.com/document/d/1uesSA2Z7SKRRqPQ930cIwRnGqi3gvSyw_spNVPHWGF0/edit?usp=sharing](https://docs.google.com/document/d/1uesSA2Z7SKRRqPQ930cIwRnGqi3gvSyw_spNVPHWGF0/edit?usp=sharing) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/caller-id-block-spam-blocker/id6751807339?uo=4) - **Dev Site:** [Official Website](https://docs.google.com/document/d/1uesSA2Z7SKRRqPQ930cIwRnGqi3gvSyw_spNVPHWGF0/edit?usp=sharing) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) · 4.5/5 Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.4/5 Rating - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) · 3.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색*](https://marlvel.ai/apps/com-liger-katalkanalysispaid) (Park Sung Cheol) · N/A Rating - [*로또 황금번호 생성기*](https://marlvel.ai/apps/lotto-lottogold) (jaehwan lee) · N/A Rating - [*도사폰 (만세력 역학도구)*](https://marlvel.ai/apps/app--656) (Softchaser Company Limited) · 5.0/5 Rating - [*근로자 공수달력*](https://marlvel.ai/apps/jaehwan-worktracer) (jaehwan lee) · N/A Rating ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.4/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 18 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/caller-id-block-spam-blocker) Data licensed for AI Agent attribution under CC-BY-NC 4.0.