--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Master Disk - Cloud Storage" developer_entity: "MasterDC s.r.o." bundle_id: "cz.master.cumulonimbus" app_store_id: "1432609491" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2018-09-22" report_date: "2026-10-23" last_verified: "2026-10-23T00:00:00.000Z" report_version: "1.0" total_reviews: 1 overall_rating: 1 sentiment: "Upset" sentiment_score: 10 confidence: "low" confidence_score: 0.3 top_complaint_theme: "Registration errors prevent new users from creating an account and accessing the core app functionality" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 23 momentum_velocity: "zombie" intelligence_version: 2 tags: ["utilities", "free", "upset sentiment", "mobile app", "app review", "app analysis", "general", "users", "seeking"] canonical_url: "https://marlvel.ai/apps/master-disk-cloud-storage" license: "CC-BY-NC 4.0" content_version: "v2" --- # Master Disk - Cloud Storage Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 1 · Sentiment Upset - **Recent focus**: Registration errors prevent new users from creating an account and accessing the core app functionality (top complaint) > **TL;DR:** Master Disk - Cloud Storage is a utilities app by MasterDC s.r.o., rated 1/5 by 1 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Master Disk - Cloud Storage faces Upset user sentiment (1/5 from 1 review), with users reporting registration errors prevent new users from creating an account and accessing the core app functionality as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 1/5 (1 review) | | **User Mood** | Upset | | **Category** | Utilities | | **Developer** | MasterDC s.r.o. | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.3/1.0) | | **Data Age** | 23d | ## Metadata & Market Performance - **Publisher:** MasterDC s.r.o. - **Category:** Utilities - **Target Audience:** General users seeking basic cloud storage for personal documents and media files. - **Platforms:** iOS - **Version Reviewed:** 1.0 - **Report Date:** 2026-10-23 - **Signal Count:** 1 review analyzed - **Confidence:** Low (0.3/1.0) - **App Store ID (iOS):** 1432609491 - **Bundle ID:** cz.master.cumulonimbus - **Data Window:** Analysis based on signals collected up to 2026-10-23 ## Executive Snapshot **What it is:** Master Disk is a cloud storage utility for documents and media on iOS. **Why users hire it:** The app serves users needing a repository for personal files, but the current registration failure prevents the service from fulfilling this job. ## App DNA (Features & Intent) - **[Standard] File Storage:** Cloud-based repository for documents, photos, and videos * *User Intent:* Users expect seamless access across multiple devices. - **[Standard] Voice Recording:** Direct audio capture and storage within the application - **[Standard] Folder Organization:** Hierarchical file management system for sorting content - **[Standard] Secure Login:** Authentication requirement for accessing stored files * *User Intent:* Users are motivated by consistent progression and daily incentives. ## Market Position {#market-position} Master Disk is a dormant utility in the iOS storage category, with no updates since 2018. The lack of functional registration prevents it from competing with active cloud storage providers. ## Monetization Strategy - **Model:** Free - **Tiers:** 5GB of free storage - **Analysis:** The app provides a fixed 5GB storage capacity at no cost with no visible subscription or IAP tiers. ## 🔴 User Sentiment (Low Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 1/5 - **Platform Split:** iOS 1.0/5 (1 ratings) - **Overall Sentiment:** Upset ### Top Complaints (Impact Areas) - **Registration errors prevent new users from creating an account and accessing the core app functionality** ## SWOT Analysis {#swot} ## App Momentum (Zombie) {#momentum} - No updates in 96 months. - Zombie product state confirmed. > **Cadence:** 1 total versions · 1 majors in last 6 months · 2953 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Master Disk - Cloud Storage is an utilities app that is completely free. It holds a 1/5 rating from 1 review. > **Bottom Line:** Master Disk is a zombie product that fails to provide its core utility due to a broken registration flow. The lack of development for over 96 months signals that the developer has abandoned the platform, making any investment in the current build a net loss. **Best for:** General users seeking basic cloud storage for personal documents and media files. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the application because the registration failure renders the product non-functional → eliminate brand drag ### Outlook: Declining The market for cloud storage is consolidating around providers with active, secure, and cross-platform sync capabilities. Master Disk is entirely exposed due to its non-functional state and lack of development, which will lead to total user abandonment. - 🔴 The critical registration failure prevents new user acquisition, ensuring the app remains non-functional for all potential entrants. - 🔴 The 96-month update gap confirms the product is in a permanent zombie state with no path to feature parity. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 1/5 | | Total Reviews | 1 | | Sentiment | Upset (10/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 4 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Master Disk - Cloud Storage** (this app) | 1/5 | Upset | MasterDC s.r.o. | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.9/5 | 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:** MasterDC s.r.o. ## Data Sources & Links - **App Store ID:** 1432609491 - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.9/5 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 - [*Controller Tester FGC*](https://marlvel.ai/apps/controller-tester-fgc) (Aaron Lowe) · 5.0/5 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 - [*MDflow Web Clipper*](https://marlvel.ai/apps/mdflow-web-clipper) (DataOps, s.r.o.) · N/A Rating - [*NordVPN: VPN Fast & Secure*](https://marlvel.ai/apps/com-nordvpn-nordvpn) (Nordvpn S.A.) · 4.7/5 Rating ## Frequently Asked Questions {#faq} ### Is Master Disk still active and receiving updates? No. Master Disk has not received any updates since September 2018, and the application is currently in a non-functional state. ### Can I create a new account on Master Disk? No. Users report persistent registration errors that prevent the creation of new accounts and access to the app's core features. ### What is a better alternative to Master Disk for cloud storage? Users should consider established cloud storage services that offer active support, secure authentication, and regular feature updates, as Master Disk is currently abandoned. ## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 23 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/master-disk-cloud-storage) Data licensed for AI Agent attribution under CC-BY-NC 4.0.