Report updated May 26, 2026
Decibel Pro: Sound Level Meter
For individuals concerned with workplace safety, noise pollution monitoring, and hearing health.
Decibel Pro: Sound Level Meter is an established utilities app that is completely free. With a 4.4/5 rating from 74 reviews, it shows polarized user reception.
What is Decibel Pro: Sound Level Meter?
Decibel Pro is an iOS sound-level meter and dosimeter utility designed for workplace safety and noise pollution monitoring.
Users hire this app to verify environmental noise levels against OSHA and NIOSH safety standards, ensuring long-term hearing health through precise, calibrated measurements.
Current Momentum
v1.0 · 30mo ago
Zombie- Maintains high-precision calibration focus.
- Ships Live Activities for lock screens.
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Real-time decibel measurement with min/max tracking.
Calculates TWA and projected noise dose per OSHA/NIOSH standards.
Displays real-time readings on iOS lock screens.
Manual trimming against external references for high precision.
How much does it cost?
- Free version with full feature set
The app operates as a free utility with no visible subscription or IAP gates.
Who Built It?
Emre Can Altaca
View Publisher Intel →Enrichment in progress
Publisher profile available very soon
What other apps does Emre Can Altaca make?
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Decibel Pro: Sound Level Meter?
Where is it available?
Localized markets (11)
How's The Utilities Market?
Market outlook for this category
Available very soon
Which niche is Decibel Pro: Sound Level Meter in?
to measure and monitor environmental sound levels
Explore the full Noise Measurement Monitors niche
Every app in this space — 4 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
This app is a direct functional competitor that targets the same noise-pollution-conscious user base with a more mature, feature-rich sound measurement suite.
Differentiators
- Offers advanced source identification features that help users categorize the specific origin of detected noise
- Includes integrated alarm limits that provide proactive safety alerts when decibel thresholds are exceeded
- Maintains a significantly larger user base and review volume, establishing strong social proof and trust
Head to head
The target must prioritize adding automated alerting features and social proof to compete with the nemesis's established market dominance.
Same space(4)
While in a different primary category, it competes for the same 'utility' screen real estate by offering hardware-connected tracking solutions.
Differentiators
- Integrates directly with physical hardware for vehicle and key tracking rather than just ambient sensing
- Provides a dealer-branded ecosystem that creates higher switching costs for users within their specific network
This app overlaps by providing remote monitoring capabilities, though it focuses on video/audio surveillance rather than decibel analysis.
Differentiators
- Offers comprehensive remote media management and device configuration for dedicated home security hardware
- Operates as a companion tool for proprietary hardware, limiting its utility to existing Lorex customers
This app competes for the same 'device utility' audience by offering a broad suite of hardware diagnostics including sound testing.
Differentiators
- Bundles over 40 distinct hardware tests into a single interface, offering superior value for general diagnostics
- Provides comprehensive display and sensor verification tools that go beyond simple decibel measurement
It shares the 'utility' category and targets users interested in monitoring their environment or home systems.
Differentiators
- Provides deep integration with solar energy hardware, offering virtual battery and system monitoring capabilities
- Features predictive analytics like 3-day weather forecasts to optimize home energy consumption patterns
New entrants(2)
This newcomer targets the safety-conscious demographic, potentially diverting users interested in personal health and security monitoring.
Differentiators
- Implements a 'Dead Man’s Switch' and emergency notification system for personal safety check-ins
It competes for the same 'environmental monitoring' use case by using device sensors to track indoor conditions.
Differentiators
- Utilizes barometric pressure and ambient light sensing to predict indoor climate changes for users
Compare Decibel Pro: Sound Level Meter against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Decibel Pro: Sound Level Meter
Strengths to defend, gaps to attack
Core Strengths
- Manual calibration against external references sustains professional-grade precision
- Live Activities integration maintains visibility on lock screens
Critical Frictions
- No automated alarm functionality despite OSHA-compliance focus
- 74 total ratings limit social proof compared to category leaders
Growth Levers
- B2B partnerships with workplace safety officers for bulk deployment
- Wearable integration for real-time noise exposure monitoring
Market Threats
- Automated alarm features in rival apps drain the safety-conscious user funnel
- Lack of monetization limits development velocity against better-funded competitors
What are the next best moves?
Ship automated alarm threshold alerts because rivals use them to capture safety-conscious users → increase retention
The nemesis app provides automated alerts, making Decibel Pro's manual monitoring feel obsolete for safety-critical use cases.
Trade-off: Pause the UI redesign for the history tab — automated safety alerts have a higher impact on user churn.
A counter-intuitive read
The lack of monetization is a strategic liability, as the app's precision-first design requires consistent R&D funding to maintain its calibration moat against ad-supported, feature-bloated rivals.
Feature Gaps vs Competitors
- Automated alarm limits (available in Sound and Noise Detector but missing here)
Key Takeaways
Decibel Pro wins on precision but loses on utility, because the lack of automated alerts forces manual monitoring, so the PM must prioritize proactive safety notifications to prevent churn to more mature competitors.
Where Is It Heading?
Mixed Signals
The noise-monitoring market is shifting toward automated, proactive safety alerts that integrate with daily workflows. Decibel Pro remains exposed due to its manual-only monitoring, so the PM must bridge this feature gap to retain users who prioritize safety-critical automation over raw precision.
Absence of automated alarm limits forces manual monitoring, which drives safety-conscious users toward more proactive, feature-rich competitive suites.
Manual calibration capability provides a distinct precision advantage that sustains the app's utility for professional-grade, high-accuracy measurement requirements.