--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Charging Sound" developer_entity: "JIANGYONG LIU21021539842" bundle_id: "com.jongjoy.charging" app_store_id: "1537282329" google_play_id: "charging.sound.effect.plug.sound" category: "Lifestyle" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2023-03-14" report_date: "2026-09-03" last_verified: "2026-09-03T00:00:00.000Z" report_version: "1.18" total_reviews: 685 overall_rating: 4.1 sentiment: "Frustrated" sentiment_score: 25 confidence: "medium" confidence_score: 0.45 top_praise_theme: "The core charging sound functionality provides a simple way for users to customize their device experience" top_complaint_theme: "Aggressive advertising patterns interrupt every interaction and make the application feel unusable for casual users" review_sample_size: 49 total_review_count: 49 analyzed_review_count: 49 data_age_days: 27 momentum_velocity: "zombie" intelligence_version: 17 nemesis: "Verticons Icon Pack" competitor_count: 7 tags: ["lifestyle", "freemium", "frustrated sentiment", "mobile app", "app review", "app analysis", "smartphone", "users", "looking"] canonical_url: "https://marlvel.ai/apps/charging-sound" license: "CC-BY-NC 4.0" content_version: "v2" --- # Charging Sound Intelligence Report ## TL;DR {#tldr} - **Category**: Lifestyle · Freemium - **Signal**: Rating 4.1 · Sentiment Frustrated - **Recent focus**: Aggressive advertising patterns interrupt every interaction and make the application feel unusable for casual users (top complaint) · The core charging sound functionality provides a simple way for users to customize their device experience (top praise) > **TL;DR:** Charging Sound is a lifestyle app by JIANGYONG LIU21021539842, rated 4.1/5 by 685 users, with Frustrated user sentiment (25/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Charging Sound faces Frustrated user sentiment (4.1/5 from 685 reviews), with users reporting aggressive advertising patterns interrupt every interaction and make the application feel unusable for casual users as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.1/5 (685 reviews) | | **User Mood** | Frustrated | | **Category** | Lifestyle | | **Developer** | JIANGYONG LIU21021539842 | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 27d | ## Metadata & Market Performance - **Publisher:** JIANGYONG LIU21021539842 - **Category:** Lifestyle - **Target Audience:** Smartphone users looking to personalize system notifications and battery alerts with custom audio clips. - **Platforms:** iOS & Android - **Version Reviewed:** 1.18 - **Report Date:** 2026-09-03 - **Signal Count:** 49 reviews analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 1537282329 - **Bundle ID:** com.jongjoy.charging - **Google Play ID:** charging.sound.effect.plug.sound - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-09-03 - **Short Description:** Customize Battery charging sound effect. Charging voice effect. ## Executive Snapshot **What it is:** Charging Sound is a personalization utility for iOS and Android that replaces system battery charging alerts with custom audio effects. **Why users hire it:** The app removes the monotony of standard system notifications by linking specific hardware events to user-selected audio clips. ## App DNA (Features & Intent) - **[Differentiator] Custom Sound Upload:** Allows users to import personal audio files from device storage to replace system charging alerts. * *User Intent:* Users value self-expression and personalized experiences. - **[Standard] Charging Event Triggers:** Plays specific audio files upon connection, disconnection, or full battery status. - **[Standard] Pre-loaded Sound Collection:** Library of over 30 sound effects including voice clips and beats for charging notifications. * *User Intent:* Users want timely prompts to stay engaged without missing updates. ## Market Position {#market-position} Charging Sound holds a niche position in the personalization category, with a 4.3-star rating on iOS across 579 reviews but a significantly lower 2.8-star rating on Android. The lack of updates since 2023 suggests a maintenance-only posture that limits its ability to compete with active rivals. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ad support, Premium subscription at $24.99/year or $9.99/3 months - **Analysis:** The freemium model uses a high-priced annual subscription to gate custom sound uploads and remove ads. ## 🔴 User Sentiment (Medium Confidence: 49 of 49 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.1/5 - **Platform Split:** iOS 4.3/5 (579 ratings) | Android 2.9/5 (106 ratings) - **Overall Sentiment:** Frustrated - **Note:** The 4.1/5 store rating reflects cumulative history, while the Frustrated sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Praises - **The core charging sound functionality provides a simple way for users to customize their device experience** ### Top Complaints (Impact Areas) - **Aggressive advertising patterns interrupt every interaction and make the application feel unusable for casual users** ## SWOT Analysis {#swot} **Core Strengths:** - Event-based audio triggers provide a sensory-based customization experience distinct from visual-only icon packs **Growth Levers:** - Lower-cost one-time purchase model could capture casual users lost to the high-priced subscription ## Recent Changes (v16 → v17) {#recent-changes} The app has transitioned to a subscription-focused monetization model while facing increased user friction from aggressive ad density and persistent technical failures. These changes reflect a hardening of the negative sentiment trend identified in the previous report. **Overall trend**: Declining **Compared at**: 2026-09-03 ### High-impact changes - **[Shifted] Pricing Model Reclassification** (pricing) - **[Declined] Technical Instability Complaints** (sentiment) ### Medium-impact changes - **[Added] Expanded Weakness and Threat Profiles** (swot) - **[Shifted] Strategic Pivot in Action Items** (pricing) ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Charging Sound vs Verticons Icon Pack - **[Verticons Icon Pack](https://marlvel.ai/apps/com-spaceman-verticonspro)** by SpaceMan: While functionally distinct, both apps compete for the same 'phone customization' wallet share and user intent, targeting users looking to personalize their device's aesthetic and functional feedback. - **Key differences:** - Maintains a massive, high-quality icon library with frequent updates that dwarf simple sound utility apps. - Leverages a strong, recognizable design language that creates a cohesive aesthetic for the entire home screen. - Utilizes server-based icon requests to keep the library relevant to user demand without bloating the app. ### Peers (What They Do Better) - **[K+ Keyboard Plus Customize](https://marlvel.ai/apps/k-keyboard-plus-customize)** by KISSAPP, S.L.: It competes for the same 'device customization' market, specifically targeting users who want to modify core system input and interaction methods. - Offers a comprehensive suite of writing assistance tools that provide functional utility beyond mere visual theme changes. - Includes integrated emoji-art features that enhance communication, providing a social layer to the customization experience. - **[Neon-PinkPD Icon Pack](https://marlvel.ai/apps/neon-pinkpd-icon-pack)** by PhunktasticDesigns: This app competes for the attention of users looking to apply specific color-themed aesthetics to their mobile operating system. - Features a cloud-based wallpaper gallery that complements the icon pack for a complete, unified visual theme. - Supports dynamic calendar icons that update the date automatically, adding functional value to the visual customization. - **[Circle Ring Icon Pack](https://marlvel.ai/apps/circle-ring-icon-pack)** by GomoTheGom: It occupies the same personalization category, appealing to users who prioritize specific geometric themes for their device interface. - Provides a dedicated icon request tool that empowers users to influence the future development of the pack. - Includes 'iconback' support to ensure non-themed icons maintain a consistent shape and visual style. - **[Fluffy 3D - Icon Pack](https://marlvel.ai/apps/com-fluffy3d-iconpack)** by PhunktasticDesigns: This app competes for the same personalization-focused user base that seeks to modify the default look and feel of their mobile device. - Focuses on high-fidelity 3D visual assets that provide a premium, tactile look compared to standard icons. - Integrates dynamic elements that change appearance, offering a more interactive home screen experience than static icons. ### New Kids on the Block (What's Innovative) - **[Blox - Icon Pack](https://marlvel.ai/apps/blox-icon-pack)** by PhunktasticDesigns: This newcomer targets the retro-gaming demographic, competing for users who want to apply nostalgic 8-bit themes to their phones. - Leverages 8-bit pixel art to appeal specifically to retro-gaming enthusiasts and users seeking a distinct, nostalgic aesthetic. - **[Brutalism Icon Pack](https://marlvel.ai/apps/com-brutalism-iconpack)** by PhunktasticDesigns: A new entrant in the personalization space that captures the current trend of architectural design styles for mobile interfaces. - Targets a niche design aesthetic that differentiates it from the saturated market of generic, colorful icon packs. ## What's New - **Latest (v1.10, 5 years ago):** Added new charging sound and fixed a custom audio crash. ## App Momentum (Zombie) {#momentum} - Dormant development since March 2023. - No major feature releases in 3 years. > **Cadence:** 5 total versions · 1 majors in last 6 months · 1165 days since last update · 172 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Charging Sound is a lifestyle app that is free with in-app purchases. With a 4.1/5 rating from 685 reviews, it faces significant user friction. > **Bottom Line:** Charging Sound's current monetization strategy is misaligned with its maintenance-only development state, creating a high-friction experience that drives churn. Pivoting to a more accessible pricing model would unlock the user base currently lost to the high annual subscription cost. **Best for:** Smartphone users looking to personalize system notifications and battery alerts with custom audio clips. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Cut annual subscription price because user complaints flag it as the top barrier to entry → increase conversion velocity ### Feature Gaps vs Competitors - Cloud-based icon requests (available in Verticons Icon Pack but absent here) ### Outlook: Declining The personalization market is consolidating around apps with frequent update cadences and community-driven content. Charging Sound remains exposed due to its stagnant development and high-friction monetization, which will likely lead to further rating erosion as the user base shifts to more responsive alternatives. - 🔴 The three-year development gap suggests the app is in maintenance mode, which increases the risk of abandonment as OS requirements evolve. - 🔴 Aggressive ad frequency and high subscription costs drive negative sentiment, which compounds the churn risk for casual users. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.1/5 | | Total Reviews | 685 | | Sentiment | Frustrated (25/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Charging Sound** (this app) | 4.1/5 | Frustrated | JIANGYONG LIU21021539842 | | [Verticons Icon Pack](https://marlvel.ai/apps/com-spaceman-verticonspro) | 4.8/5 | N/A | SpaceMan | | [Brutalism Icon Pack](https://marlvel.ai/apps/com-brutalism-iconpack) | N/A/5 | N/A | PhunktasticDesigns | | [K+ Keyboard Plus Customize](https://marlvel.ai/apps/k-keyboard-plus-customize) | 4.4/5 | N/A | KISSAPP, S.L. | | [Circle Ring Icon Pack](https://marlvel.ai/apps/circle-ring-icon-pack) | 4.5/5 | Thrilled | GomoTheGom | | [Neon-PinkPD Icon Pack](https://marlvel.ai/apps/neon-pinkpd-icon-pack) | 4.4/5 | Excited | PhunktasticDesigns | ## Company Profile - **Developer:** JIANGYONG LIU21021539842 ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/charging-sound/id1537282329?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=charging.sound.effect.plug.sound&hl=en&gl=us) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*Verticons Icon Pack*](https://marlvel.ai/apps/com-spaceman-verticonspro) (SpaceMan) · 4.8/5 Rating - [*Brutalism Icon Pack*](https://marlvel.ai/apps/com-brutalism-iconpack) (PhunktasticDesigns) · N/A Rating - [*K+ Keyboard Plus Customize*](https://marlvel.ai/apps/k-keyboard-plus-customize) (KISSAPP, S.L.) · 4.4/5 Rating - [*Circle Ring Icon Pack*](https://marlvel.ai/apps/circle-ring-icon-pack) (GomoTheGom) · 4.5/5 Rating | Excellent Sentiment - [*Neon-PinkPD Icon Pack*](https://marlvel.ai/apps/neon-pinkpd-icon-pack) (PhunktasticDesigns) · 4.4/5 Rating | Positive Sentiment - [*Blox - Icon Pack*](https://marlvel.ai/apps/blox-icon-pack) (PhunktasticDesigns) · N/A Rating | Excellent Sentiment - [*Fluffy 3D - Icon Pack*](https://marlvel.ai/apps/com-fluffy3d-iconpack) (PhunktasticDesigns) · 5.0/5 Rating - [*Alarmy - Loud alarm clock*](https://marlvel.ai/apps/alarmy-loud-alarm-clock) (Delight Room Co., Ltd.) · 4.8/5 Rating | Positive Sentiment - [*Journey - Diary, Journal*](https://marlvel.ai/apps/com-journey-ios-app) (Two App Studio Pte. Ltd.) · 4.7/5 Rating | Positive Sentiment - [*Tinder Dating App: Date & Chat*](https://marlvel.ai/apps/tinder-dating-app-date-chat) (Tinder LLC) · 4.0/5 Rating ## Frequently Asked Questions {#faq} ### Is Charging Sound worth paying for? Reviews suggest the current subscription price is high for the functionality provided, especially given the lack of recent updates. Casual users may find the free, ad-supported version sufficient. ### How does Charging Sound compare to icon packs? While both are personalization tools, Charging Sound focuses on audio feedback for hardware events, whereas icon packs modify the visual aesthetic of the home screen. ### Does Charging Sound have intrusive ads? Users report high ad frequency, with some reviewers describing back-to-back advertisements appearing after every interaction, which significantly impacts the usability of the free tier. ### What is a free alternative to Charging Sound? Users often compare the app to other free personalization utilities that do not gate basic customization features behind a subscription, though specific alternatives depend on the device OS. ## 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:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 49 - **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:** 27 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/charging-sound) Data licensed for AI Agent attribution under CC-BY-NC 4.0.