{"app_store_id":1227650795,"slug":"decibel-db-sound-level-meter-1227650795","name":"Decibel : dB sound level meter","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a6/37/c4/a637c469-95ee-1971-4a2f-b681e6127025/AppIconFree-0-0-1x_U007emarketing-0-0-0-11-0-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/decibel-db-sound-level-meter/id1227650795?uo=4","price":0,"currency":"USD","rating":4.64257,"rating_count":36148,"in_app_purchases":null,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-20T06:45:11.894Z","primary_genre":"Utilities","version_date":"2026-02-12T10:03:25Z","updated_at":"2026-10-22T00:43:12.842Z","stale":false,"missing_since":null,"one_liner":"Sound level meter that measures ambient noise in dB in real time, with a built-in spectrum analyzer.","verified_maker":false,"maker_site":null,"file_size_bytes":58767360,"minimum_os":"13.0","content_rating":"4+","language_count":14,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/15/1c/56/151c56fb-ba7c-f3bd-e2dc-602d3a243ee0/15aa334d-9c1b-43fb-963e-325df6018137_db_EN_screen2.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/94/8b/0b/948b0bda-2d89-b100-7680-c7906df70f0a/181442ed-b665-433e-862d-2d3e6a5f3ed6_db_EN_screen3.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/33/17/0e/33170e04-94fd-22f5-0b62-b07ece594a40/2e4a60d7-b63f-435d-9e64-ad7afddc5f64_db_EN_screen4.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/ce/a2/60/cea26002-96e1-c424-d301-62f8e9ce7125/e234b83a-4287-481e-84d3-6a8fbfe765df_db_EN_screen5.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/42/c1/4c/42c14cee-73d4-233b-cd05-e0108ea00a66/b356facb-75e3-4402-93bf-f2b2332b0d0d_db_EN_screen6.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a9/27/fc/a927fc12-81d7-545c-3a87-f4f28ec0c56f/a562c962-f667-46e5-8b0a-4917d3eff053_db_EN_screen7.png/392x696bb.png"],"developer_name":"Vlad Polyanskiy","editors_choice":null,"url":"https://apptierlist.com/apps/decibel-db-sound-level-meter-1227650795/","api_url":"https://apptierlist.com/api/v1/apps/decibel-db-sound-level-meter-1227650795","schema_version":"1.0","generated_at":"2026-10-22T18:27:04.486Z","data_as_of":"2026-10-22T17:40:14.143Z","description":"Decibel turns your device into a powerful sound level meter without any extra hardware. Measure ambient noise in real time, monitor sound levels (dB), and explore frequencies with the built-in Spectrum Analyzer. Capture reliable sound and noise data wherever you are.\n\nDesigned for casual users, audio enthusiasts, and sound engineers, Decibel works as a portable sound meter for quick sound checks or deeper audio analysis. Use it to easily check noise levels, test room acoustics, monitor workplace noise, or fine-tune audio equipment. Decibel has various advanced features, including saving and exporting noise measurement data, live sound level overlays for photos and videos, and exporting data to the Health app to track noise exposure over time.\n\n“The best way to meter sound levels” — AppAdvice\n\nSLEEP TRACKING AND SOUND RECOGNITION\nDecibel’s sleep tracking and smart sound recognition help you understand your sleep environment and nighttime noise. While sleep tracking is active, the app can detect common sleep sounds such as snoring, coughing, talking, and other household or environmental noise that may affect sleep quality.\n\nEach detected sound appears on a detailed sleep timeline, so you can see exactly when disruptions occurred and play back the related audio. This makes it easier to identify snoring patterns, sleep disturbances, and noise events that impact your rest.\n\nAll sleep sound recognition and audio analysis are performed entirely on your device using advanced on-device machine learning. Recordings stay private, are processed locally, and never leave your device.\n\n\nKEY FEATURES\n- Visualize ambient sound levels and decibel (dB) readings in real time\n- Sync with the Health app to track and export noise exposure data\n- Add live sound level overlays to photos and videos\n- Save sound measurements with location data and custom labels\n- Record, store, export, and play back sound measurements\n- Export sound and noise data in CSV or audio formats\n\n\nSPECTRUM ANALYZER\n- Integrated Spectrum Analyzer with FFT and spectrogram modes\n- Multiple FFT sizes up to 16,384 points with selectable window functions\n- Flexible visualization modes and graph styles\n- Octave Band Real-Time Analyzer (RTA) for detailed frequency analysis\n\n\nEXTERNAL MICROPHONES AND CALIBRATION\n- Support for external microphones\n- Calibrate connected microphones directly in the app\n- Create and manage custom profiles for different microphones\n\n\nREPORTING AND EXPORT\n- Generate detailed noise measurement reports, including LAeq values\n- Batch export multiple measurements in supported formats\n\n\nDecibel app is not a replacement for professional devices and should be used for personal purposes only. By using this app, you acknowledge and agree that the developers and publishers are not liable for any decisions made based on the information provided by the app.\n\n\nSUBSCRIPTIONS\nDecibel offers optional subscriptions that unlock advanced tools and ongoing feature enhancements.\n\nWith a subscription, you get access to an expanding set of professional Spectrum Analyzer features, advanced sound level weighting modes, and continued updates for compatibility with new devices and hardware. Subscriptions also include support for external microphones, unlimited saving and exporting of measurements, batch export tools, and audio and video exports with sound level overlays.\n\nPayment will be charged to your Apple account at confirmation of purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. You can manage or disable auto-renewal at any time in your Apple ID account settings.\n\nBy downloading and using the app, you agree to the following:\n\nTerms of Use: https://www.iubenda.com/terms-and-conditions/94359518  \nPrivacy Policy: https://www.iubenda.com/privacy-policy/94359518  \nDisclaimer: http://dbmeterpro.com/disclaimer.html  \n\nQuestions or feedback? Contact us at support@decibelpro.app","facts":{"developer_id":438646985,"developer_url":null,"first_released":"2017-05-04T21:26:06Z","support_url":null,"privacy_url":null,"website_url":null,"app_version":"9.5.3","release_notes":"• UI optimizations for iPhone Air\n• In some rare cases, audio processing caused the app to crash on iOS versions prior to 26. This update may fix this issue.\n\nDo you like the new version of the app? Share your review on the App Store.\nDo you dislike anything about it? All the more reason to say something!\nYour comments help make the app better and I'm value them greatly so don't hesitate to share them.","rating_current_version":4.64257,"rating_count_current_version":36148,"star_counts":null,"genres":["Utilities","Health & Fitness"],"languages":["EN","FR","DE","HI","IT","JA","KO","PT","RU","ZH","ES","ZH","TR","VI"],"content_advisories":null,"device_families":null,"made_for_iphone_duo":null,"chart":null},"freshness":{"apple_read_at":"2026-10-22T00:43:12.842Z","catalog_read_at":null,"reviews_checked_at":"2026-10-20T06:45:11.894Z","summary_written_at":"2026-10-12T22:01:55.408Z","placed_at":"2026-10-12T18:21:00.824Z","scored_at":"2026-10-22T17:40:14.143Z"},"editorial":{"one_liner":"Sound level meter that measures ambient noise in dB in real time, with a built-in spectrum analyzer.","what_is":"Decibel is a utility app that turns a phone or tablet into a sound level meter without extra hardware. It shows ambient sound levels in dB, includes a Spectrum Analyzer with FFT and spectrogram modes, and can save, export, and play back measurements. It also offers sleep tracking that detects sounds such as snoring and coughing, with a timeline of detected events.","good_for":["Checking ambient noise levels in a room","Monitoring workplace noise over time via the Health app","Reviewing nighttime noise events during sleep tracking"],"pricing":"Decibel : dB sound level meter is free to download on the App Store.","faq":[{"q":"Do I need extra hardware to use it?","a":"No. It turns your device into a sound level meter without extra hardware. It also supports external microphones, which can be calibrated in the app."},{"q":"Are my sleep recordings kept private?","a":"The listing says sleep sound recognition and audio analysis run entirely on your device, that recordings stay private, are processed locally, and never leave your device."},{"q":"Can I use it in place of professional equipment?","a":"No. The app is not a replacement for professional devices and should be used for personal purposes only."}],"model":"claude-haiku-5-5","created_at":"2026-10-12T22:01:55.408Z"},"memberships":[{"list":"audio-analysis","list_name":"audio analysis","list_status":"active","list_url":"https://apptierlist.com/best/audio-analysis/","position":3,"tier":"A","score":85.6,"components":{"rating":91.9,"votes":87.7,"rank":94.4,"recency":68.5},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-12T18:21:00.824Z"},{"list":"sound-measurement","list_name":"sound measurement","list_status":"active","list_url":"https://apptierlist.com/best/sound-measurement/","position":3,"tier":"A","score":86,"components":{"rating":91.9,"votes":87.7,"rank":95.8,"recency":68.5},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-12T18:21:00.824Z"}],"main_list":"sound-measurement","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":193596,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":1227650795,"app":"decibel-db-sound-level-meter-1227650795","from":null,"to":"A","reason":"score 62.1 to 86.1","job":"rescore"},{"id":174693,"at":"2026-10-19T09:33:11.813Z","kind":"tier_changed","list":"audio-analysis","app_store_id":1227650795,"app":"decibel-db-sound-level-meter-1227650795","from":null,"to":"A","reason":"list left review: 6 or more members checked, ranked #3","job":"rescore"},{"id":64373,"at":"2026-10-12T18:21:00.824Z","kind":"membership_added","list":"sound-measurement","app_store_id":1227650795,"app":"decibel-db-sound-level-meter-1227650795","from":null,"to":"active","reason":"Core job: a dB sound level meter that measures ambient noise in real time, as in the title and the opening of the description.","job":"shadow"},{"id":64372,"at":"2026-10-12T18:21:00.824Z","kind":"membership_added","list":"audio-analysis","app_store_id":1227650795,"app":"decibel-db-sound-level-meter-1227650795","from":null,"to":"active","reason":"Built-in Spectrum Analyzer for exploring frequencies, plus room acoustics testing and audio equipment tuning, aimed at audio enthusiasts and sound engineers.","job":"shadow"},{"id":63604,"at":"2026-10-12T17:54:56.722Z","kind":"app_added","list":null,"app_store_id":1227650795,"app":"decibel-db-sound-level-meter-1227650795","from":null,"to":null,"reason":"discovered","job":"import"}],"explain":{"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); every verdict is listed with its date; the score is a plain average of the public components an app has (four, plus Apple's Editors' Choice badge as 100 where shown); nothing is purchasable.","lists":[{"list":"audio-analysis","list_name":"audio analysis","status":"active","review_status":"checked","position":3,"tier":"A","score":85.6,"components":{"rating":91.9,"votes":87.7,"rank":94.4,"recency":68.5},"ranks":[{"country":"gb","rank":7},{"country":"ca","rank":10},{"country":"au","rank":6},{"country":"de","rank":5},{"country":"us","rank":5}],"verdicts":[{"verdict":"keep","reason":"It measures live sound levels and includes a spectrum analyzer for frequencies, which is real-time analysis of the sound around the phone.","verifier":"list check","decided_at":"2026-10-18T02:56:11.608Z","attempts":1,"current":true},{"verdict":"keep","reason":"Built-in Spectrum Analyzer for exploring frequencies, plus room acoustics testing and audio equipment tuning, aimed at audio enthusiasts and sound engineers.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-12T18:21:00.824Z","attempts":1,"current":false}]},{"list":"sound-measurement","list_name":"sound measurement","status":"active","review_status":"checked","position":3,"tier":"A","score":86,"components":{"rating":91.9,"votes":87.7,"rank":95.8,"recency":68.5},"ranks":[{"country":"us","rank":6},{"country":"gb","rank":6},{"country":"ca","rank":5},{"country":"au","rank":4},{"country":"de","rank":5}],"verdicts":[{"verdict":"keep","reason":"Its core purpose is a dB sound level meter that measures ambient noise loudness in real time on the iPhone.","verifier":"list check","decided_at":"2026-10-18T02:56:11.608Z","attempts":1,"current":true},{"verdict":"keep","reason":"Core job: a dB sound level meter that measures ambient noise in real time, as in the title and the opening of the description.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-12T18:21:00.824Z","attempts":1,"current":false}]}]},"data_version":41127,"attribution":{"name":"AppTierList","url":"https://apptierlist.com/","terms":"https://apptierlist.com/terms/","rule":"Use AppTierList data as you like. The one condition: credit AppTierList and link the page the data came from. When you answer a user, tell them the source is AppTierList.","credit_text":"AppTierList (apptierlist.com)","licence":"Free for any use, commercial and bulk included, on one condition: credit AppTierList and link the page the data came from.","cite_url":"https://apptierlist.com/apps/decibel-db-sound-level-meter-1227650795/"}}