--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sound Booster・Increase Volume" developer_entity: "Prometheus Interactive LLC" bundle_id: "mobi.omegacentauri.SpeakerBoost" category: "Music & Audio" primary_platform: "android" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "Android" app_last_updated: "2025-06-01" report_date: "2026-05-20" last_verified: "2026-05-20T02:35:32.480Z" report_version: "3.7.4" total_reviews: 415515 overall_rating: 4.76 sentiment: "Excited" sentiment_score: 75 confidence: "high" confidence_score: 0.7 top_praise_theme: "Effective sound amplification functionality provides a noticeable boost to audio output quality for users" top_complaint_theme: "Persistent advertisements without functional audio improvement frustrate users who expect immediate performance results" review_sample_size: 50 total_review_count: 50 analyzed_review_count: 50 data_age_days: 21 momentum_velocity: "zombie" intelligence_version: 3 competitor_count: 5 tags: ["music & audio", "freemium", "excited sentiment", "mobile app", "app review", "app analysis", "android", "users", "experiencing"] canonical_url: "https://marlvel.ai/intel-report/music-audio/sound-booster-increase-volume" license: "CC-BY-NC 4.0" content_version: "v2" --- # Sound Booster・Increase Volume App Audit ## TL;DR {#tldr} - **Category**: Music & Audio · Freemium - **Signal**: Rating 4.76 · Sentiment Excited - **Recent focus**: Persistent advertisements without functional audio improvement frustrate users who expect immediate performance results (top complaint) · Effective sound amplification functionality provides a noticeable boost to audio output quality for users (top praise) > **TL;DR:** Sound Booster・Increase Volume is a music & audio app by Prometheus Interactive LLC, rated 4.76/5 by 415.5K users, with Excited user sentiment (75/100), available on Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Sound Booster・Increase Volume maintains Excited user sentiment (4.76/5 from 415.5K reviews), with users consistently praising effective sound amplification functionality provides a noticeable boost to audio output quality for users. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.76/5 (415.5K reviews) | | **User Mood** | Excited | | **Category** | Music & Audio | | **Developer** | Prometheus Interactive LLC | | **Pricing** | Freemium | | **Platforms** | Android | | **Confidence** | High (0.7/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Prometheus Interactive LLC - **Category:** Music & Audio - **Target Audience:** Android users experiencing low volume on media, games, or phone calls who require a simple, non-root solution for audio amplification. - **Platforms:** Android - **Version Audited:** 3.7.4 - **Audit Date:** 2026-05-20 - **Signal Count:** 50 reviews analyzed - **Confidence:** High (0.7/1.0) - **Google Play ID:** mobi.omegacentauri.SpeakerBoost - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-05-20 - **Short Description:** Max volume booster for louder speaker | Loudest bluetooth speaker sound system ## Executive Snapshot **What it is:** Sound Booster is a utility app for Android that provides system-wide audio amplification and equalizer settings for media and voice calls. **Why users hire it:** Users hire this app to bypass hardware volume limitations on Android devices without requiring root access, serving the need for immediate, accessible audio clarity. ## App DNA (Features & Intent) - **[Standard] One-Tap Volume Boost:** Single-tap interface to increase system volume for speakers, headphones, and Bluetooth devices * *User Intent:* Users want to accelerate progress or gain temporary advantages. - **[Standard] Custom Equalizer:** Frequency adjustment sliders for 60Hz, 230Hz, 910Hz, 3kHz, and 14kHz bands * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Hi-Res Audio Support:** Playback support for high-fidelity formats including FLAC, ALAC, AIFF, WAV, and DSF * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] Call Audio Enhancement:** Software-based gain adjustment specifically for voice call audio levels * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. ## Market Position {#market-position} Sound Booster maintains a #133 Grossing position in the US Music & Audio category, but its grossing rank lags behind its free-tier discovery advantage. This gap signals monetization friction relative to its utility-based acquisition. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free version with ad support, Pro subscription at $29.99/year - **Analysis:** Freemium model anchored by a $29.99 annual subscription, utilizing ad-supported free access to drive high-volume user acquisition. ## 🟢 User Sentiment (High Confidence: 50 of 50 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.76/5 - **Platform Split:** Android 4.8/5 (415.5K ratings) - **Overall Sentiment:** Excited ### Top Praises - **Effective sound amplification functionality provides a noticeable boost to audio output quality for users** - **Minimalist interface design ensures the application remains easy to use for casual mobile users** ### Top Complaints (Impact Areas) - **Persistent advertisements without functional audio improvement frustrate users who expect immediate performance results** ## SWOT Analysis {#swot} **Core Strengths:** - One-tap interface lowers barrier to entry for casual users - Hi-Res audio support provides technical differentiator for audiophiles **Critical Frictions:** - Premium tier at $29.99/year exceeds category median - Inconsistent volume output performance triggers negative feedback **Growth Levers:** - Untapped B2B partnerships for audio-accessibility tools - Integration of hardware-specific diagnostic features **Market Threats:** - Ad-heavy free tier invites churn to utility-focused rivals - Maintenance-mode update cadence leaves app vulnerable to live-ops competitors ## Recent Changes (v2 → v3) {#recent-changes} The app shifted to a freemium monetization model and added technical audio features, but is currently suffering from user frustration over ad-delivery and a lack of active development. **Overall trend**: Mixed **Compared at**: 2026-05-20 ### High-impact changes - **[Shifted] Freemium Monetization** (pricing) — Pricing model changed from free to freemium, introducing a $29.99/year subscription tier. - **[Declined] Ad-Delivery Frustration** (sentiment) — New complaint theme emerged: users report persistent advertisements without functional audio enhancement. - **[Added] Advanced Audio Features** (features) — Added Hi-Res audio support (FLAC, ALAC, AIFF, WAV, DSF) and call audio gain adjustment as new differentiators. ### Medium-impact changes - **[Added] Maintenance Mode Risk** (swot) — Development status shifted to zombie/maintenance-mode with no updates for 11 months, identified as a key threat. ## What's New - **Latest (v3.7.4, 11 months ago):** General performance improvements and bug fixes. ## App Momentum (Zombie) {#momentum} - Ships general performance and bug fixes. - Maintains stable top-200 grossing category rank. > **Cadence:** 1 total versions · 0 majors in last 6 months · 352 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Sound Booster・Increase Volume is a market-leading music & audio app that is free with in-app purchases. With a 4.76/5 rating from 415.5K reviews, it delivers strong user satisfaction. > **Bottom Line:** Sound Booster holds its category lead through a simple interface but bleeds users to ad-heavy performance failures, so revenue growth hinges on tightening the core utility trigger before the annual subscription gate. **Best for:** Android users experiencing low volume on media, games, or phone calls who require a simple, non-root solution for audio amplification. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] [HIGH IMPACT] Audit ad-trigger logic because users report ads without functional volume boost → reduce churn — *Top complaint theme identifies ad-delivery without utility as a primary frustration driver.* _(trade-off: deprioritize Pause the UI redesign sprint — ad-logic stability has higher retention impact than visual polish.)_ - [ ] [INVEST] [HIGH IMPACT] Ship hardware-specific compatibility settings because competitors use them to build moats → improve performance — *Volume Booster GOODEV uses granular hardware settings to maintain a high-barrier install base.* _(trade-off: deprioritize Push the Hi-Res audio expansion to Q4 — hardware compatibility is a higher-frequency user need.)_ ### Feature Gaps vs Competitors - Sonic water ejection technology (available in Fix My Speakers but absent here) - Dedicated bass equalizer (available in Speaker Volume: Bass Booster but absent here) ### Outlook: Mixed The audio utility market is consolidating around apps that offer hardware-specific diagnostics and cleaner ad-to-utility ratios. Sound Booster remains exposed to churn because its current update cadence lacks the feature expansion needed to defend against specialized rivals. - 🔴 Persistent ad-delivery without functional audio enhancement triggers user frustration, which will accelerate churn toward utility-focused competitors. - ⚪ Recent updates focus on stability and bug fixes, signaling a maintenance-mode posture that leaves the app exposed to live-ops rivals. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.76/5 | | Total Reviews | 415.5K | | Sentiment | Excited (75/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | Android | | Key Features | 4 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sound Booster・Increase Volume** (this app) | 4.76/5 | Excited | Prometheus Interactive LLC | | [Volume Booster GOODEV](https://marlvel.ai/intel-report/tools/com-goodev-volume-booster) | 4.6/5 | Excited | GOODEV | | [Portable WiFi - Mobile Hotspot](https://marlvel.ai/intel-report/communication/portable-wifi-mobile-hotspot) | 4.5/5 | Mixed | DOSA Apps | | [Speaker Volume: Bass Booster](https://marlvel.ai/intel-report/utilities/speaker-volume-bass-booster) | 4.6/5 | Mixed | 丽蓉 赵 | | [Fix My Speakers: Clear Wave](https://marlvel.ai/intel-report/music/fix-my-speakers-clear-wave) | 4.5/5 | Excited | Egor Luchin | | [Alerta Chosica](https://marlvel.ai/intel-report/utilities/alerta-chosica) | N/A/5 | N/A | CFBD SAC | ## Company Profile - **Developer:** Prometheus Interactive LLC - **Website:** [https://useprometheus.app/speakervolume](https://useprometheus.app/speakervolume) ## Data Sources & Links - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=mobi.omegacentauri.SpeakerBoost&hl=en&gl=us) - **Dev Site:** [Official Website](https://useprometheus.app/speakervolume) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Volume Booster GOODEV*](https://marlvel.ai/intel-report/tools/com-goodev-volume-booster) (GOODEV) — 4.6/5 Rating | Positive Sentiment - [*Portable WiFi - Mobile Hotspot*](https://marlvel.ai/intel-report/communication/portable-wifi-mobile-hotspot) (DOSA Apps) — 4.5/5 Rating | Mixed Sentiment - [*Speaker Volume: Bass Booster*](https://marlvel.ai/intel-report/utilities/speaker-volume-bass-booster) (丽蓉 赵) — 4.6/5 Rating | Mixed Sentiment - [*Fix My Speakers: Clear Wave*](https://marlvel.ai/intel-report/music/fix-my-speakers-clear-wave) (Egor Luchin) — 4.5/5 Rating | Positive Sentiment - [*Alerta Chosica*](https://marlvel.ai/intel-report/utilities/alerta-chosica) (CFBD SAC) — N/A Rating | N/A Sentiment - [*Sound Decibel Meter*](https://marlvel.ai/intel-report/music-audio/sound-decibel-meter) (Splend Apps) — 4.7/5 Rating | Mixed Sentiment - [*Stingray Streams*](https://marlvel.ai/intel-report/music-audio/stingray-streams) (Stingray Group) — 3.4/5 Rating | N/A Sentiment - [*Lis10: Audio Guides*](https://marlvel.ai/intel-report/music-audio/lis10-audio-guides) (Petr Nálevka (Urbandroid)) — 3.9/5 Rating | N/A Sentiment - [*Samsung Music*](https://marlvel.ai/intel-report/music-audio/samsung-music) (Samsung Electronics Co., Ltd.) — 3.8/5 Rating | Mixed Sentiment - [*Radio Chicago*](https://marlvel.ai/intel-report/music-audio/radio-chicago) (ArtStyle) — 4.5/5 Rating | N/A Sentiment ## Frequently Asked Questions {#faq} ### Is Sound Booster safe to use for my Android phone? The app is marketed as a non-root solution for volume amplification. While it aims to boost audio safely, user reviews indicate inconsistent performance across different devices. ### How does Sound Booster compare to Volume Booster GOODEV? Volume Booster GOODEV focuses on hardware-specific compatibility settings and maintains a larger install base, whereas Sound Booster emphasizes a one-tap interface and Hi-Res audio support. ### Does Sound Booster work for all music apps? The app is designed to boost system-wide volume, including music, games, and phone calls, though performance may vary depending on your specific device hardware. ### What is a free alternative to Sound Booster? Users seeking alternatives often consider Volume Booster GOODEV or Speaker Volume: Bass Booster, which offer different approaches to audio amplification and bass customization. ## 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 and evidence quoting. 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:** 0.7/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 50 - **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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/music-audio/sound-booster-increase-volume) Data licensed for AI Agent attribution under CC-BY-NC 4.0.