{"app_store_id":1485543216,"slug":"decibel-sound-level-meter-1485543216","name":"Decibel - sound level meter","subtitle":"Spectrum frequency analyzer","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/5a/22/57/5a225786-8315-6214-bf32-3358afaea5d1/AppIcon-0-0-1x_U007emarketing-0-0-0-7-0-0-sRGB-0-0-0-GLES2_U002c0-512MB-85-220-0-0.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/decibel-sound-level-meter/id1485543216?uo=4","price":0,"currency":"USD","rating":4.56222,"rating_count":4708,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Utilities","version_date":"2020-05-13T08:20:04Z","updated_at":"2026-10-22T16:27:13.183Z","stale":false,"missing_since":null,"one_liner":"Measures sound pressure levels and frequency spectrum, with a reference chart to compare recordings.","verified_maker":false,"maker_site":null,"file_size_bytes":28136448,"minimum_os":"12.0","content_rating":"4+","language_count":1,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/d1/dd/16/d1dd1604-066a-bdf7-2a1d-b0985aaa4121/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/d1/a1/84/d1a184e9-0939-1e31-4fc8-644053605c98/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/9b/b0/36/9bb036d6-0de7-ac96-2359-4eeda200999a/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/33/d2/f7/33d2f7f0-5f2a-616f-573c-f0a7b2c6b449/pr_source.jpg/392x696bb.jpg"],"developer_name":"AppRover","editors_choice":false,"url":"https://apptierlist.com/apps/decibel-sound-level-meter-1485543216/","api_url":"https://apptierlist.com/api/v1/apps/decibel-sound-level-meter-1485543216","schema_version":"1.0","generated_at":"2026-10-23T09:51:51.354Z","data_as_of":"2026-10-22T17:40:14.143Z","description":"Decibel is the perfect app to evaluate the noise around you : measure the sound pressure, see the spectrum variation, and then compare your recording to the reference chart included in the app. Is it similar to a normal conversation ? a diesel truck? a rocket launch ? Figure it out !\n\nCalibrated professionally, It supports dBa, dBb, dBc and dBz, for a customized and highly reliable recording. One of the most complete app for your sound measurements!\n\nYou can save an history of your recording and spectrum - keep track of your last actions !\n\n\nKEY FEATURES\nmeasure accurately the sound pressure around you\nsupports dBa, dBb, dBc and dBz\nrecordings and spectrum can be saved\ndetailed reference chart to compare your measurements\nunlimited recordings\nunique and intuitive interface\n\n\nSUBSCRIPTION INFORMATION\n\n- Subscribe for unlimited access to our Premium pack and special features\n- Monthly subscription ($4.49) / Yearly subscription ($16.99)\n- Free trial subscription is automatically renewed unless cancelled 24 hours before the renewal\n- Payment will be charged to iTunes Account at confirmation of purchase\n- Account will be charged for renewal within 24-hours prior to the end of the current period, at the same price\n- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase\n- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable\n\nPrivacy Policy & Terms of Service: http://musicworldmedia.com/products/decibel/tos\n\n*Price are equal to the value that \"Apple's App Store Matrix\" determines is the equivalent of the subscription price in $USD.","facts":{"developer_id":1448355489,"developer_url":"http://approver-studio.com/products/decibel/tos","first_released":"2020-01-24T08:00:00Z","support_url":"http://approver-studio.com/products/decibel/tos","privacy_url":"https://approver-studio.com/privacy-policy","website_url":"http://approver-studio.com/products/decibel/tos","app_version":"1.01.00","release_notes":"We have fixed some minor crashes and updated the app for iPad.","rating_current_version":4.56222,"rating_count_current_version":4708,"star_counts":[221,65,211,560,3651],"genres":["Utilities"],"languages":["EN"],"content_advisories":null,"device_families":["iphone","ipad","ipod"],"made_for_iphone_duo":false,"chart":null},"freshness":{"apple_read_at":"2026-10-22T16:27:13.183Z","catalog_read_at":"2026-10-22T16:27:13.183Z","reviews_checked_at":null,"summary_written_at":"2026-10-22T16:39:13.239Z","placed_at":"2026-10-18T03:48:11.703Z","scored_at":"2026-10-22T17:40:14.143Z"},"editorial":{"one_liner":"Measures sound pressure levels and frequency spectrum, with a reference chart to compare recordings.","what_is":"Decibel is a free sound level meter in the Utilities genre that measures sound pressure around you and shows how the spectrum varies. It supports dBA, dBB, dBC and dBZ weightings and lets you save recordings and spectrum history. The app includes a reference chart to compare your measurements with sounds such as normal conversation or a diesel truck.","good_for":["Comparing noise levels of everyday sounds against a reference chart","Recording and reviewing sound pressure and spectrum history","Measuring ambient noise with dBA, dBB, dBC or dBZ weighting"],"pricing":"Decibel - sound level meter is free to download, with in-app purchases on the App Store.","faq":[{"q":"Is the app free to use?","a":"The app is free to download. The listing includes in-app purchases, and a Premium subscription is offered at $4.49 per month or $16.99 per year, with a free trial mentioned that auto-renews unless cancelled 24 hours before renewal."},{"q":"Which weightings does it support?","a":"Decibel supports dBA, dBB, dBC and dBZ for recordings."},{"q":"Can I save my measurements?","a":"The listing says recordings and spectrum can be saved as a history, and it lists unlimited recordings as a key feature. Not stated on the App Store for any storage limits beyond that."}],"model":"claude-haiku-5-5","created_at":"2026-10-22T16:39:13.239Z"},"memberships":[{"list":"sound-measurement","list_name":"sound measurement","list_status":"active","list_url":"https://apptierlist.com/best/sound-measurement/","position":9,"tier":"C","score":66.1,"components":{"rating":91.1,"votes":79.4,"rank":94,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-18T03:48:11.703Z"}],"main_list":"sound-measurement","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":193600,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":1485543216,"app":"decibel-sound-level-meter-1485543216","from":null,"to":"C","reason":"score 42.6 to 62.7","job":"rescore"},{"id":152439,"at":"2026-10-18T03:48:11.703Z","kind":"membership_added","list":"sound-measurement","app_store_id":1485543216,"app":"decibel-sound-level-meter-1485543216","from":null,"to":"active","reason":"A sound level meter that measures ambient sound pressure in dB with dBA/B/C/Z weighting and a reference chart.","job":"shadow"},{"id":143652,"at":"2026-10-17T06:43:13.386Z","kind":"app_added","list":null,"app_store_id":1485543216,"app":"decibel-sound-level-meter-1485543216","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":9,"tier":"C","score":66.1,"components":{"rating":91.1,"votes":79.4,"rank":94,"recency":0},"ranks":[{"country":"us","rank":8},{"country":"gb","rank":9},{"country":"ca","rank":6},{"country":"au","rank":5},{"country":"de","rank":7}],"verdicts":[{"verdict":"keep","reason":"A sound level meter that measures ambient sound pressure in dB with dBA/B/C/Z weighting and a reference chart.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T03:48:11.703Z","attempts":1,"current":true},{"verdict":"keep","reason":"The app is a dedicated sound level meter. It measures live sound pressure in dBA, dBB, dBC and dBZ and shows the spectrum, so it matches the list's core intent.","verifier":"list check","decided_at":"2026-10-18T03:48:11.703Z","attempts":1,"current":true}]}]},"data_version":41696,"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-sound-level-meter-1485543216/"}}