{"app_store_id":1643525961,"slug":"decibel-meter-ultra-1643525961","name":"Decibel Meter Ultra","subtitle":"Measure Sound and Noise Levels","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/7e/89/4b/7e894b63-331e-0006-a149-48e94db03412/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/decibel-meter-ultra/id1643525961?uo=4","price":0,"currency":"USD","rating":4.62371,"rating_count":2546,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Utilities","version_date":"2026-09-19T14:27:09Z","updated_at":"2026-10-20T19:48:13.908Z","stale":false,"missing_since":null,"one_liner":"Sound level meter that measures, records and logs noise levels, with dosimeter and octave band analysis tools.","verified_maker":false,"maker_site":null,"file_size_bytes":95313920,"minimum_os":"18.6","content_rating":"12+","language_count":7,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b0/1e/fa/b01efa1e-64e7-53be-d44c-61eae5d91126/Frame_6.7_01.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f4/3b/7a/f43b7a93-30b1-bb58-3e24-006b308f7be0/Frame_6.7_02.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/09/21/57/09215790-8c0a-eae0-8329-6dbe5f7f3759/Frame_6.7_03.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/99/2b/db/992bdb7c-bd33-f48c-304f-c30db6651691/Frame_6.7_04.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/de/f9/60/def96084-b586-0e75-86d2-dbf79beef5b3/Frame_6.7_05.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/7b/04/e5/7b04e54c-0b65-1d8b-09c1-f8eb5a8f0f1b/Frame_6.7_06.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/79/3d/74/793d7411-7fb6-75aa-6c48-229b00cb4424/Frame_6.7_07.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b8/92/38/b89238df-01d7-5ce1-1b67-4d01c14dfc24/Frame_6.7_08.png/320x480bb.jpg"],"developer_name":"Ultrafine, Lda","editors_choice":false,"url":"https://apptierlist.com/apps/decibel-meter-ultra-1643525961/","api_url":"https://apptierlist.com/api/v1/apps/decibel-meter-ultra-1643525961","schema_version":"1.0","generated_at":"2026-10-22T11:04:58.403Z","data_as_of":"2026-10-22T10:35:12.511Z","description":"Measure, record and track sound levels in your environment with Decibel Meter Ultra, the all-in-one sound level meter, dosimeter and real-time analyzer.\n\nFrom monitoring sound levels at home, noise levels in the workplace, to calibrating the speakers of your hi-fi, Decibel Meter Ultra makes it easy to get the information that you need.\n\nPrecision Metering For Sound:\nGet accurate sound level readings using industry standard measurement methodologies, selectable A, C and Z frequency weighting curves, fast and slow time-weightings, plus concurrent peak level measurement. Choose from the built-in microphones on your device or connect an external microphone* for an even broader dynamic range.\n\nEliminate Nuisance Noise:\nGetting proof is as simple as tapping a button. Catch and log problem noise as it occurs. Overlay live video with sound levels, or create comprehensive acoustic analysis reports that you can share easily via PDF. Visualize sound levels over time and gather the evidence that you need to take decisive action.\n\nSafeguard Your Hearing:\nStay aware of noise levels in the workplace and compare against industry-mandated safe levels using the built-in dosimeter. Select from default measurement profiles based on published recommendations from NIOSH and OSHA, or if you’re working against a different specification, create your own.\n\nElevate Your Home Audio:\nGet the best from your home audio system with powerful fractional octave band analysis. Fine-tune your equipment using up to twelfth octave-band resolution, variable time weightings and peak level indicators so that you can enjoy music and movies like never before.\n\nDownload now and take advantage of our free plan which includes our built-in metering profile and up to two-minute recording durations. Or choose one of our PRO plans and gain access to everything the app has to offer, including our full suite of professional metering options, custom meter profiles, analysis charts, PDF reports, background recording, unlimited recording durations and more.\n\n*External microphones require calibration against a reference sound level source\n\nThe data provided by Decibel Meter Ultra is for educational and informational purposes only. Please refer to the disclaimer in the Terms of Use for further information.\n\nTerms of Use: https://decibelmeterultra.com/terms\nPrivacy Policy: https://decibelmeterultra.com/privacy","facts":{"developer_id":1558108175,"developer_url":"https://www.decibelmeterultra.com/","first_released":"2024-01-02T08:00:00Z","support_url":"https://www.decibelmeterultra.com/contact/","privacy_url":"https://decibelmeterultra.com/privacy","website_url":"https://www.decibelmeterultra.com/","app_version":"1.7.13","release_notes":"Bug fixes, performance enhancements and user feedback inspired tweaks to make your experience measuring, recording and tracking sound levels even better.\n\nIf you're enjoying the app please leave us a rating by tapping the 'rate app' button in the settings screen – it really helps us! And if you have any feedback on things we might do better or things you'd like to see in the app – get in contact by tapping the 'feedback' button in the settings screen. We'd love to hear from you!","rating_current_version":4.62371,"rating_count_current_version":2546,"star_counts":[112,33,79,253,2068],"genres":["Utilities","Productivity"],"languages":["EN","FR","DE","JA","PT","ZH","ES"],"content_advisories":["Infrequent/Mild Medical/Treatment Information"],"device_families":["iphone"],"chart":null},"freshness":{"apple_read_at":"2026-10-20T19:48:13.908Z","catalog_read_at":"2026-10-19T04:53:11.800Z","reviews_checked_at":null,"summary_written_at":"2026-10-20T06:47:11.594Z","placed_at":"2026-10-19T09:07:11.793Z","scored_at":"2026-10-22T10:35:12.511Z"},"editorial":{"one_liner":"Sound level meter that measures, records and logs noise levels, with dosimeter and octave band analysis tools.","what_is":"Decibel Meter Ultra is a sound level meter, dosimeter and real-time analyzer for iOS. It measures and records sound levels using the device microphones or an external microphone, and can log noise over time with shareable PDF reports. The listing also describes fractional octave band analysis for calibrating home audio systems.","good_for":["Monitoring noise levels at home or in a neighbourhood dispute","Checking workplace noise against NIOSH or OSHA reference levels","Calibrating speakers or tuning a home hi-fi system"],"pricing":"Decibel Meter Ultra is free to download, with in-app purchases on the App Store.","faq":[{"q":"Is the app free to use?","a":"It is free to download. The free plan includes the built-in metering profile and recordings up to two minutes. PRO plans unlock more features, and in-app purchases are listed on the App Store."},{"q":"Can I use an external microphone?","a":"Yes, you can connect an external microphone for a broader dynamic range. It notes that external microphones require calibration against a reference sound level source."},{"q":"Can it record in the background or export reports?","a":"The listing says PDF reports, background recording and unlimited recording durations are included in the PRO plans. It also says reports can be shared easily via PDF."}],"model":"claude-haiku-5-5","created_at":"2026-10-20T06:47:11.594Z"},"memberships":[{"list":"sound-measurement","list_name":"sound measurement","list_status":"draft","list_url":null,"position":null,"tier":null,"score":90.4,"components":{"rating":91.8,"votes":75.9,"rank":94,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"under_review","confidence":"normal","judged_at":"2026-10-19T09:07:11.793Z"},{"list":"audio-analysis","list_name":"audio analysis","list_status":"active","list_url":"https://apptierlist.com/best/audio-analysis/","position":5,"tier":"A","score":82.9,"components":{"rating":91.8,"votes":75.9,"rank":63.8,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-19T09:07:11.793Z"}],"main_list":"audio-analysis","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"history":[{"id":193603,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":1643525961,"app":"decibel-meter-ultra-1643525961","from":null,"to":"S","reason":"score 66.9 to 90.4","job":"rescore"},{"id":174696,"at":"2026-10-19T09:33:11.813Z","kind":"tier_changed","list":"audio-analysis","app_store_id":1643525961,"app":"decibel-meter-ultra-1643525961","from":null,"to":"A","reason":"score 82.5","job":"rescore"},{"id":173557,"at":"2026-10-19T09:07:11.793Z","kind":"membership_added","list":"sound-measurement","app_store_id":1643525961,"app":"decibel-meter-ultra-1643525961","from":null,"to":"active","reason":"It is a decibel meter and sound level meter with A/C/Z weighting, fast and slow time-weightings, and a dosimeter for measuring noise.","job":"shadow"},{"id":173556,"at":"2026-10-19T09:07:11.793Z","kind":"membership_added","list":"audio-analysis","app_store_id":1643525961,"app":"decibel-meter-ultra-1643525961","from":null,"to":"active","reason":"Billed as a real-time analyzer with fractional octave band analysis and level-over-time visualization for tuning home audio.","job":"shadow"},{"id":168969,"at":"2026-10-19T04:53:11.800Z","kind":"app_added","list":null,"app_store_id":1643525961,"app":"decibel-meter-ultra-1643525961","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":"sound-measurement","list_name":"sound measurement","status":"active","review_status":"checked","position":null,"tier":null,"score":90.4,"components":{"rating":91.8,"votes":75.9,"rank":94,"recency":100},"ranks":[{"country":"us","rank":7},{"country":"gb","rank":7},{"country":"ca","rank":6},{"country":"au","rank":6},{"country":"de","rank":9}],"verdicts":[{"verdict":"keep","reason":"It is a decibel meter and sound level meter with A/C/Z weighting, fast and slow time-weightings, and a dosimeter for measuring noise.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T09:07:11.793Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its core purpose is measuring live ambient noise levels in decibels on an iPhone, with a dosimeter and frequency weightings.","verifier":"list check","decided_at":"2026-10-19T09:07:11.793Z","attempts":1,"current":true}]},{"list":"audio-analysis","list_name":"audio analysis","status":"active","review_status":"checked","position":5,"tier":"A","score":82.9,"components":{"rating":91.8,"votes":75.9,"rank":63.8,"recency":100},"ranks":[{"country":"gb","rank":31},{"country":"au","rank":28},{"country":"us","rank":20},{"country":"ca","rank":46}],"verdicts":[{"verdict":"keep","reason":"Billed as a real-time analyzer with fractional octave band analysis and level-over-time visualization for tuning home audio.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T09:07:11.793Z","attempts":1,"current":true},{"verdict":"keep","reason":"A sound level meter with a real-time analyzer. It measures and visualizes the surrounding sound, like the Decibel X and RTA apps already listed.","verifier":"list check","decided_at":"2026-10-19T09:07:11.793Z","attempts":1,"current":true}]}]},"data_version":40811,"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-meter-ultra-1643525961/"}}