# Decibel: dB Sound Meter — Noise Exposure & Daily Dose > Precise sound level meter, dosimeter, and frequency analyzer for professionals and daily users. (iPhone/iPad app by 芳 王.) - Source: https://appshunter.io/ios/app/decibel-db-sound-meter/id6755168199 (this page in markdown: same URL + `.md`) - Developer: [芳 王](https://appshunter.io/developer/1674464173) - Category: Lifestyle, Utilities - Price: Free with in-app purchases - Rating: 3.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 15.0 · 157 MB - Languages: American English, Arabic, Filipino, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish and 8 more - Released: 2025-12-02 - Data updated: 2026-09-08 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/decibel-db-sound-meter/id6755168199/reviews.md ## What is Decibel? Measure sound levels, understand noise exposure, and save clear records with Decibel: dB Sound Meter. See real-time readings, follow changes on a live graph, and review average/Leq, minimum, maximum, and peak values during each session. Use the app for everyday sound checks at home, work, events, studios, and outdoor environments. REAL-TIME SOUND MEASUREMENT • Current sound level in a clear digital and analog display • Live waveform graph • Average/Leq, minimum, maximum, and peak values • Fast response mode • Calibration offset for supported microphones • Reference labels that make sound levels easier to understand NOISE EXPOSURE • Estimated daily noise dose • Time-weighted average (TWA) • Projected dose and exposure details • OSHA-based reference view • Exposure-time guidance for different sound levels RECORD AND DOCUMENT • Save measurement sessions • Add names and notes • Review detailed session data • Play back saved recordings • Add live dB overlays to photos and videos • Share saved results for personal documentation USE DECIBEL FOR • Workplace noise awareness • Concerts, rehearsals, and event checks • Home appliance and room comparisons • Neighborhood and traffic noise records • Baby rooms, study spaces, and quiet environments PRO FEATURES Upgrade to Pro to unlock: • Unlimited saved history • PDF report export • Advanced noise analysis tools • Extended calibration controls • Ad-free measurement IMPORTANT MEASUREMENT INFORMATION Sound level readings depend on the device model, microphone, case, environment, calibration, and connected accessories. Decibel is designed for awareness, comparison, and personal documentation. It is not a certified sound level meter or noise dosimeter and is not a replacement for professional equipment. Do not use the app as the sole basis for workplace compliance, legal, medical, or safety decisions. Note If you subscribed through Apple, payment will be charged to your App Store account at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal at the price of your chosen plan within 24 hours prior to the end of the current subscription period. You can manage your subscription and auto-renewal in your Account Settings after purchase. Privacy Policy Your data stays private—we don't collect personal info unnecessary for measurements. Microphone access is used solely for decibel tester functions, with no background tracking. Privacy Policy: https://asmyapp.com/decibelmeter/privacy Terms of Use: https://asmyapp.com/decibelmeter/terms Questions or feedback: support@mobiunityhk.com Download Decibel: dB Sound Meter to measure, compare, and document everyday sound environments. dec ## Key features - Professional Frequency Weighting (ITU-R 468, A/B/C/Z) - Real-Time FFT Spectrum Analysis - NIOSH & OSHA Standard Dosimeter - High-Precision Calibration - InstaDecibel Image Overlay - Live Activities Support - History Management & Export (PDF/M4A) ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Weekly VIP | $9.99 | per 7 days | | Weekly VIP | $9.99 | per 7 days | | Weekly VIP | $9.99 | per 7 days | | Weekly VIP | $9.99 | per 7 days | | Weekly VIP | $9.99 | per 7 days | ## Frequently asked questions about Decibel ### What is Decibel's accuracy range? Decibel offers an accuracy range of 30-130 dBA. It supports high-precision calibration with microphone gain adjustable from -50dB to +50dB for laboratory-grade accuracy. ### Is Decibel suitable for workplace safety? Yes, Decibel is designed as a NIOSH and OSHA compliant dosimeter. It automatically calculates daily noise exposure, making it an essential tool for workplace safety monitoring. ### Can I share my sound measurements? Yes, Decibel features InstaDecibel Image Overlay, allowing you to add dB data and charts to photos with one tap. These can then be shared on platforms like Instagram, Facebook, and LINE. ### What professional frequency weighting filters does Decibel use? Decibel utilizes professional frequency weighting filters including ITU-R 468, A, B, C, and Z. These filters are crucial for precise human ear perception and excellent low-frequency noise measurement. ### What are the Pro Version features in Decibel? The Pro Version, available via in-app purchase, offers unlimited history exports, advanced spectrum analyzer modes, custom calibration profiles, enhanced frequency analyzer tools, and an ad-free experience. ### How does Decibel handle historical data? Decibel provides complete history management with clear data storage. Users can export their measurements as PDF reports or M4A audio files, with unlimited exports available in the Pro Version. ### Does Decibel have ads? No, Decibel is ad-free. The application explicitly states an 'Ad-Free Experience' as a feature of its Pro Version, indicating the base version is also free of advertisements. ### What devices does Decibel support? Decibel is available for iPhone, iPad, and iPod devices. It also supports Live Activities, allowing for continuous noise monitoring directly on your lock screen. ## Version history (last 5 releases) ### 1.0.5 — 2026-08-05 Known issue optimization fixes ### 1.0.4 — 2026-07-15 Known issue optimization fixes ### 1.0.3 — 2026-04-13 Known issue optimization fixes ### 1.0.2 — 2026-03-17 Fixd major bugs ### 1.0.1 — 2025-12-27 fix bugs ## Apps similar to Decibel | App | Rating | Price | Category | | --- | --- | --- | --- | | [SAFEIER](https://appshunter.io/ios/app/safeier/id6503707902) | 2.1 (26) | Free | Lifestyle | | [dB Meter Sound Level Meter](https://appshunter.io/ios/app/db-meter-sound-level-meter/id6456264270) | 4.7 (404) | Free | Lifestyle | | [Ajax PRO: Tool For Engineers](https://appshunter.io/ios/app/ajax-pro-tool-for-engineers/id1249276895) | 4.6 (12) | Free | Lifestyle | | [Ediag](https://appshunter.io/ios/app/ediag/id6444249245) | 4.3 (1,427) | Free | Lifestyle | | [in.touch 2 edition](https://appshunter.io/ios/app/intouch-2-edition/id1126466135) | 1.7 (115) | Free | Lifestyle | | [TaHoma by Somfy](https://appshunter.io/ios/app/tahoma-by-somfy/id1463391677) | 3.5 (1,280) | Free | Lifestyle | ## More apps by 芳 王 - [Stylish Font for Keyboard](https://appshunter.io/ios/app/stylish-font-for-keyboard/id6451076370) - [OP Auto Clicker: Automatic Tap](https://appshunter.io/ios/app/op-auto-clicker-automatic-tap/id6465951819) - [Speed Test - WiFi Analyzer +](https://appshunter.io/ios/app/speed-test-wifi-analyzer-plus/id6621210564) - [WatchsApp - Chat on Watch](https://appshunter.io/ios/app/watchsapp-chat-on-watch/id6740202716) - [WAMR Backup Message&Dual Chat](https://appshunter.io/ios/app/wamr-backup-message-and-dual-chat/id6748599998) - [Reverse Audio: Sound Challenge](https://appshunter.io/ios/app/reverse-audio-sound-challenge/id6752286903) All apps by 芳 王: https://appshunter.io/developer/1674464173 ## Related topics [db meter frequency](https://appshunter.io/ios/topics/db-meter-frequency) · [baby room noise meter](https://appshunter.io/ios/topics/baby-room-noise-meter) · [dosimeter sound](https://appshunter.io/ios/topics/dosimeter-sound) · [medidor de ruido](https://appshunter.io/ios/topics/medidor-de-ruido) · [db meter sound](https://appshunter.io/ios/topics/db-meter-sound) · [noise meter sound](https://appshunter.io/ios/topics/noise-meter-sound) · [sound on sound](https://appshunter.io/ios/topics/sound-on-sound) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*