--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "SoniMeter: Sound Level Meter" developer_entity: "焕 徐" bundle_id: "com.duolaameng.decibo" app_store_id: "6772677494" category: "Utilities" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-05-29" report_date: "2026-10-06" last_verified: "2026-10-06T00:00:00.000Z" report_version: "1.0.1" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 2 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["utilities", "freemium", "mobile app", "app review", "app analysis", "professionals,", "estate", "inspectors,"] canonical_url: "https://marlvel.ai/apps/sonimeter-sound-level-meter" license: "CC-BY-NC 4.0" content_version: "v2" --- ## ⚠ Content Warning This report covers topics classified as sensitive (health). Information is aggregated from public sources for informational purposes only. This is not medical advice. Consult a qualified professional before acting on any information here. --- # SoniMeter: Sound Level Meter Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Freemium > **TL;DR:** SoniMeter: Sound Level Meter is a utilities app by 焕 徐, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** SoniMeter: Sound Level Meter is a utilities app by 焕 徐. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Utilities | | **Developer** | 焕 徐 | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 2d | ## Metadata & Market Performance - **Publisher:** 焕 徐 - **Category:** Utilities - **Target Audience:** Professionals, real estate inspectors, and individuals requiring precise environmental or occupational noise measurement. - **Platforms:** iOS - **Version Reviewed:** 1.0.1 - **Report Date:** 2026-10-06 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6772677494 - **Bundle ID:** com.duolaameng.decibo - **Data Window:** Analysis based on signals collected up to 2026-10-06 ## Executive Snapshot **What it is:** SoniMeter is a professional-grade sound level meter for iOS that provides occupational noise metrics and frequency weighting. **Why users hire it:** The app removes the financial friction of annual subscriptions, displacing rivals that charge $40/year for similar measurement capabilities. ## App DNA (Features & Intent) - **[Differentiator] Real Zero Calibration:** Two-mode calibration using silent-room baseline or reference-tone offset to correct microphone sensitivity. - **[Differentiator] Occupational Noise Metrics:** Calculates TWA, Dose, and frequency weighting (A/C/Z) compliant with OSHA and NIOSH standards. - **[Differentiator] Threshold Alarm:** Triggers haptic and visual notifications when sound levels exceed user-defined limits. * *User Intent:* Users want timely prompts to stay engaged without missing updates. ## Market Position {#market-position} SoniMeter occupies a niche utility segment by prioritizing a one-time purchase model over the subscription-heavy landscape of the App Store. The lack of a significant rating count suggests the app has yet to gain traction in the broader utility market. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free trial: 5 days with 20-minute daily limit, Pro: $3.99 one-time purchase - **Analysis:** The one-time $3.99 payment model serves as a direct challenge to the $40/year subscription standard in the sound meter category. ## SWOT Analysis {#swot} **Core Strengths:** - Real-time 1/3-octave spectrum analysis provides professional-grade diagnostic data - On-device processing ensures privacy and removes cloud-dependency **Growth Levers:** - Localized pricing could capture users frustrated by subscription costs ## What's New - **Latest (v1.0.1, 4 months ago):** Rebranded for improved App Store search discoverability. ## App Momentum (Maintenance) {#momentum} - Ships no major updates in 4 months. - Maintains dormant release cadence. > **Cadence:** 1 total versions · 0 majors in last 6 months · 129 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} SoniMeter: Sound Level Meter is an utilities app that is free with in-app purchases. > **Bottom Line:** SoniMeter offers a high-value alternative to subscription-based meters, but its lack of user traction and dormant update cadence threaten its viability. Establishing a review base is the necessary step to unlock the app's potential against established incumbents. **Best for:** Professionals, real estate inspectors, and individuals requiring precise environmental or occupational noise measurement. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship a marketing-focused update to drive initial reviews because the current zero-rating status prevents discovery → increase install velocity ### Outlook: Stable The utility category is consolidating around apps with high review counts and frequent feature updates. SoniMeter remains exposed due to its lack of user feedback and stagnant release cadence, which will likely result in continued low visibility unless the developer shifts focus toward acquisition. - 🔴 The four-month update gap suggests a maintenance-only posture, which limits the app's ability to respond to evolving iOS audio APIs. - ⚪ The one-time purchase model provides a clear value proposition, but requires a high volume of new users to sustain long-term development. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **SoniMeter: Sound Level Meter** (this app) | N/A/5 | N/A | 焕 徐 | | [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:** 焕 徐 - **Website:** [https://duolaamengweb3.github.io/decibo/](https://duolaamengweb3.github.io/decibo/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sonimeter-sound-level-meter/id6772677494?uo=4) - **Dev Site:** [Official Website](https://duolaamengweb3.github.io/decibo/) - **Sources:** Developer website content, App store metadata. ## 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 ## 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:** 2 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sonimeter-sound-level-meter) Data licensed for AI Agent attribution under CC-BY-NC 4.0.