{"schema_version":"1.0","generated_at":"2026-10-22T19:06:21.585Z","app":{"app_store_id":448155923,"slug":"decibel-x-db-sound-level-meter-448155923","name":"Decibel X:dB Sound Level Meter","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d3/64/e5/d364e579-1ccb-96ca-c137-097d542beafd/AppIcon-Decibel-0-0-1x_U007emarketing-0-8-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/decibel-x-db-sound-level-meter/id448155923?uo=4","price":0,"currency":"USD","rating":4.64566,"rating_count":163256,"in_app_purchases":null,"recent_rating":3.75,"recent_review_count":20,"reviews_checked_at":"2026-10-20T06:45:11.894Z","primary_genre":"Utilities","version_date":"2026-10-11T13:48:41Z","updated_at":"2026-10-22T00:43:12.842Z","stale":false,"missing_since":null,"one_liner":"Turns an iOS device into a sound level meter that measures sound pressure level in dBA and dBC, with history, graphs…","verified_maker":false,"maker_site":null,"file_size_bytes":93935616,"minimum_os":"17.0","content_rating":"4+","language_count":12,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/9b/98/cd/9b98cd66-1ae5-1644-3c5e-f6ef5fd50eb2/86ef3c12-436e-4b30-98ef-a2e51c653dc1_55in_en_01.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ca/33/a2/ca33a298-70c7-5079-f9b6-e8fa8271dbf3/fd70cf71-f296-4bb3-b4ca-aad450c438db_55in_en_02.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/b5/14/17/b5141764-8018-8f0e-865f-b2f9641132f2/adf71203-77f8-44c7-83b4-2cf9b8c830fc_55in_en_03.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f4/e7/fe/f4e7fe1e-1a28-5b6d-9c9a-5af4abbb64d2/02395cbb-8a4f-4c06-8823-363e43fd4e49_55in_en_04.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/49/aa/d5/49aad543-6dc7-7042-fc77-e6b72a743a9c/aef6f02a-d7e5-499f-8fe9-64efa92c91f5_55in_en_05.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/9e/05/b7/9e05b7af-9637-9771-853b-392cde210067/e177e3ff-2e89-449a-a7fe-3d96476e66c8_55in_en_06.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ab/3a/4a/ab3a4a5b-bf07-7c1b-958a-a2d7aee443a9/1e9b1a30-4b6a-4ad3-b7a0-6bcb2ee058ed_55in_en_08.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/c6/ed/7a/c6ed7ae8-c416-e451-140f-f7fbbbc317ae/479b9bd3-ce0c-4722-af99-b25136a25320_55in_en_09.jpg/392x696bb.jpg"],"developer_name":"SkyPaw Co., Limited","editors_choice":null,"url":"https://apptierlist.com/apps/decibel-x-db-sound-level-meter-448155923/","api_url":"https://apptierlist.com/api/v1/apps/decibel-x-db-sound-level-meter-448155923"},"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":1,"tier":"S","score":96.3,"components":{"rating":92.1,"votes":94.4,"rank":98.8,"recency":100},"ranks":[{"country":"us","rank":3},{"country":"gb","rank":2},{"country":"ca","rank":1},{"country":"au","rank":2},{"country":"de","rank":3}],"verdicts":[{"verdict":"keep","reason":"Its main purpose is measuring surrounding noise in dB (dBA, dBC) on an iPhone, which is exactly this category.","verifier":"list check","decided_at":"2026-10-18T01:59:11.543Z","attempts":1,"current":true},{"verdict":"keep","reason":"Core job: a pre-calibrated sound level meter measuring SPL in dBA/dBC, plus a dosimeter with NIOSH/OSHA standards.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-09T03:59:53.925Z","attempts":1,"current":false}]},{"list":"audio-analysis","list_name":"audio analysis","status":"active","review_status":"checked","position":1,"tier":"S","score":96.2,"components":{"rating":92.1,"votes":94.4,"rank":98.2,"recency":100},"ranks":[{"country":"au","rank":8},{"country":"us","rank":2},{"country":"gb","rank":1},{"country":"ca","rank":2},{"country":"de","rank":1}],"verdicts":[{"verdict":"keep","reason":"A sound level meter that measures and graphs the sound around the phone, with frequency weighting filters. That is live audio analysis, the same kind of app as Decibel X PRO already in the list.","verifier":"list check","decided_at":"2026-10-18T01:59:11.543Z","attempts":1,"current":true},{"verdict":"keep","reason":"Offers real-time FFT and bar graphs, frequency weighting filters, octave analysis and history graphs for frequency analysis.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-09T03:59:53.925Z","attempts":1,"current":false}]}],"history":[{"id":193594,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":"S","reason":"score 71.6 to 96.6","job":"rescore"},{"id":174692,"at":"2026-10-19T09:33:11.813Z","kind":"tier_changed","list":"audio-analysis","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":"S","reason":"list left review: 6 or more members checked, ranked #1","job":"rescore"},{"id":51518,"at":"2026-10-10T11:32:23.899Z","kind":"tier_changed","list":"audio-analysis","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":"B","to":null,"reason":"score 71.5","job":"rescore"},{"id":36374,"at":"2026-10-09T05:36:03.534Z","kind":"tier_changed","list":"audio-analysis","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":"B","reason":"score 71.3","job":"rescore"},{"id":27999,"at":"2026-10-09T03:59:53.925Z","kind":"membership_added","list":"audio-analysis","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":"active","reason":"Offers real-time FFT and bar graphs, frequency weighting filters, octave analysis and history graphs for frequency analysis.","job":"fill"},{"id":27998,"at":"2026-10-09T03:59:53.925Z","kind":"membership_added","list":"sound-measurement","app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":"active","reason":"Core job: a pre-calibrated sound level meter measuring SPL in dBA/dBC, plus a dosimeter with NIOSH/OSHA standards.","job":"fill"},{"id":21812,"at":"2026-10-09T03:10:04.928Z","kind":"app_added","list":null,"app_store_id":448155923,"app":"decibel-x-db-sound-level-meter-448155923","from":null,"to":null,"reason":"discovered","job":"fill"}],"data_version":41155,"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/"}}