--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Contacts - Multi Clean, Backup" developer_entity: "Khac Le Duy Cao" bundle_id: "com.kasper.contactsexim" app_store_id: "1575332194" category: "Utilities" primary_platform: "ios" primary_monetization: "Subscription" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2021-10-25" report_date: "2026-09-27" last_verified: "2026-09-27T00:00:00.000Z" report_version: "1.6" total_reviews: 32 overall_rating: 4.7 confidence: "low" confidence_score: 0.2 data_age_days: 3 momentum_velocity: "zombie" intelligence_version: 2 tags: ["utilities", "subscription", "mobile app", "app review", "app analysis", "users", "seeking", "manage,"] canonical_url: "https://marlvel.ai/apps/contacts-multi-clean-backup" license: "CC-BY-NC 4.0" content_version: "v2" --- # Contacts - Multi Clean, Backup Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Subscription - **Signal**: Rating 4.69 > **TL;DR:** Contacts - Multi Clean, Backup is a utilities app by Khac Le Duy Cao, rated 4.69/5 by 32 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Contacts - Multi Clean, Backup is a utilities app by Khac Le Duy Cao. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.69/5 (32 reviews) | | **Category** | Utilities | | **Developer** | Khac Le Duy Cao | | **Pricing** | Subscription | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 3d | ## Metadata & Market Performance - **Publisher:** Khac Le Duy Cao - **Category:** Utilities - **Target Audience:** Users seeking to manage, clean, and secure personal contact lists on iOS devices. - **Platforms:** iOS - **Version Reviewed:** 1.6 - **Report Date:** 2026-09-27 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 1575332194 - **Bundle ID:** com.kasper.contactsexim - **Data Window:** Analysis based on signals collected up to 2026-09-27 ## Executive Snapshot **What it is:** Contacts - Multi Clean, Backup is an iOS utility for managing, backing up, and securing contact lists via encrypted vaults. **Why users hire it:** Users open the app to remove duplicate clutter and hide private contacts from unauthorized device access, displacing manual contact-book editing. ## App DNA (Features & Intent) - **[Standard] Contact Backup:** Exports contact lists to CSV or VCF file formats for external storage. - **[Standard] Bulk Deletion:** Removes multiple contacts simultaneously to reduce manual cleanup time. - **[Differentiator] Encrypted Contact Vault:** Hides and secures specific contacts behind a passcode, making them invisible to unauthorized users. * *User Intent:* Users prioritize data protection and trust in the platform. ## Market Position {#market-position} Contacts - Multi Clean, Backup holds a 4.68-star rating across 32 reviews in the iOS Utilities category. The absence of updates for over four years signals a stagnant market position relative to active utility competitors. ## Monetization Strategy - **Model:** Subscription - **Tiers:** Weekly package, Monthly package, Lifetime package - **Analysis:** Subscription model gates all features behind recurring or lifetime payments, with no free-tier feature access mentioned. ## SWOT Analysis {#swot} **Core Strengths:** - Encrypted vault provides a privacy-focused barrier for sensitive contacts. **Growth Levers:** - Freemium conversion model could expand the top-of-funnel user base. ## What's New - **Latest (v1.6, 4 years ago):** Resolved a crash occurring within the passcode entry flow. ## App Momentum (Zombie) {#momentum} - No updates in 1,798 days. - Maintenance-mode status since October 2021. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1798 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Contacts - Multi Clean, Backup is an utilities app. It holds a 4.69/5 rating from 32 reviews. > **Bottom Line:** Contacts - Multi Clean, Backup relies on its niche privacy vault to retain users, but the four-year development gap makes it a high-risk choice for long-term contact management. **Best for:** Users seeking to manage, clean, and secure personal contact lists on iOS devices. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit OS compatibility because the app has not been updated in 1,798 days → prevent churn from crashes ### Outlook: Declining Users report: The iOS utility market is consolidating around apps with frequent update cadences and modern design standards. Contacts - Multi Clean, Backup remains exposed due to its long-term development inactivity, which will likely lead to a gradual decline in relevance as iOS evolves. - 🔴 The 1,798-day update gap suggests the app is in maintenance mode, which erodes user trust in data-security tools. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.69/5 | | Total Reviews | 32 | | Confidence | Low | | Pricing Model | Subscription | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Contacts - Multi Clean, Backup** (this app) | 4.69/5 | N/A | Khac Le Duy Cao | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.8/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [App For Siri Commands Tips](https://marlvel.ai/apps/app-for-siri-commands-tips) | N/A/5 | N/A | Anh La Phan Son | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Bin Days - Bin Reminder](https://marlvel.ai/apps/bin-days-bin-reminder) | N/A/5 | N/A | Vicki Partridge | ## Company Profile - **Developer:** Khac Le Duy Cao - **Website:** [https://duycao2506.github.io](https://duycao2506.github.io) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/contacts-multi-clean-backup/id1575332194?uo=4) - **Dev Site:** [Official Website](https://duycao2506.github.io) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*App For Siri Commands Tips*](https://marlvel.ai/apps/app-for-siri-commands-tips) (Anh La Phan Son) · N/A Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Bin Days - Bin Reminder*](https://marlvel.ai/apps/bin-days-bin-reminder) (Vicki Partridge) · N/A Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Gear Ratio Calculator & RPM*](https://marlvel.ai/apps/cog-gear-ratio-calculator) (Linh Phan Nhat Khanh) · N/A Rating - [*NordVPN: VPN Fast & Secure*](https://marlvel.ai/apps/com-nordvpn-nordvpn) (Nordvpn S.A.) · 4.7/5 Rating - [*Pick and Pull: Junkyard Finder*](https://marlvel.ai/apps/pick-and-pull-junkyard-finder) (Vladimir Kostadinov Stoyanov) · 3.7/5 Rating - [*Pulley Calculator Easy*](https://marlvel.ai/apps/pulley-calculator-easy) (YAVUZ BULAMADIK) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Contacts - Multi Clean, Backup safe for private contacts? The app features an encrypted vault that hides contacts behind a passcode, making them invisible to others. However, the lack of updates since 2021 means it may not benefit from the latest iOS security patches. ### Can I use Contacts - Multi Clean, Backup for free? No, the app uses a subscription-only model, requiring a weekly, monthly, or lifetime purchase to access all features, including backup and deletion tools. ### What are the alternatives to Contacts - Multi Clean, Backup? Users should consider native iOS contact management tools or other utility apps that offer frequent updates and active developer support, given the long development gap here. ## 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:** 0.2/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 3 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/contacts-multi-clean-backup) Data licensed for AI Agent attribution under CC-BY-NC 4.0.